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Korean Journal of Horticultural Science and Technology
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Korean Society of Horticultural Science
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Red Fruit Yield and Quality by Harvest Frequencies and Dates in Pepper
Hwang, Jae-Mun ; Chung, Koo-Min ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 255~259
The study was aimed to compare yield and fruit quality of red pepper (Capsicum annuum L.) by different harvest frequency and single harvest dates. Red fruit length and width and weight had tendency to decrease with delaying harvest dates, especially fruit weight was lowest at harvest on September. The component ratio of pericarp in the fruit was increased, but seed and calyx ratio of the fruit were decreased as the harvest date was delayed. Total numbers of red fruit harvested per plant had not differences among harvest frequencies, but had significant differences among single harvest dates, especially it was lowest on August 13 than other dates. However, the dry pepper yield by single harvest (one time harvest) was much decreased with compared to several harvest times, harvest frequency could be reduced as less 2 times with delaying harvest date. Redness of fruit was much enhanced at harvest on September 15 or single harvest time than other dates or times, and capsaicin content of red fruit was slightly higher in late harvest dates. Reducing sugar contents of red fruit did not shown differences among harvest times and dates.
Effect of N,
Application Rates and Top Dressing Time on Growth and Yield of Onion(Allium cepa L.) under Spring Culture in Low Land
Lee, Jong-Tae ; Ha, In-Jong ; Lee, Chan-Jung ; Moon, Jin-Seong ; Cho, Yong-Cho ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 260~266
The experiment was executed to determine N,
application rates and top dressing time on growth and yield of onion under spring culture in lowland. The chemical properties of soil experimented were pH 6.0, 23.5 g․
organic matter, 222 mg․
. Soil pH at harvest lowered and available
increased as N level increased. At plant maturity, plant height in 240 kg․
N level was 73.2 cm, the highest of all, and bulb diameter in 180 kg․
N level was 55.6 mm, the largest of all, but the growth showed no significant difference among
application rates. The chlorophyll contents increased as N level increased and in case of
, the chlorophyll content was 0.47 mg․
in 80 kg․
level, more than any other level. N level for the maximal marketable yield was 120 kg․․
and the yield was 22.9 ton․․
level was 80 kg․
and the yield was 23.8 ton․
level was 120 kg․
and the yield was 23.4 ton․
. The optimum levels of N,
fertilizers by regression equations were 138, 88, 96 kg․․
, respectively. The maximal nutrient absorption amounts were 68.3 kg․․
N, 8.4 kg․․
, 65.6 kg․․․
in application rates for the maximum yield. It is recommended that additional fertilization be applied in one and two month after transplanting.
Effect of Recycled Substrates Culture on the Growth and Quality Components of Hydroponically Grown Tomatoes (Lycopersicon esculentum Mill)
Park, kwen-Woo ; Lee, Ho-Sun ; Kang, Ho-Min ; Lee, Young-Ju ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 267~272
The objective of this study was to investigate the possibility of several environment-friendly recycled substrates for hydroponic growing media of tomatoes. The experiment was executed to test with ten different kinds of substrates. Three of then were recycled mushroom composts, two were reused cotton and rockwool, one was mixiture of reused rockwool + peatmoss (1:2, v/v), and four were common ones (perlite, vermiculite, rockwool, granular rockwool). Tomato plants grew well in recycled golden mushroom compost, however a total fruit yield was higher in reused cotton medium and followed by in recycled mushroom composts, granular rockwool, and reused rockwool+peatmoss mixing one, but there was no significant difference. Soluble solids, titratable acidity, and vitamin C were not influenced by a number of trusses. Firmness was reduced as increasing a number of truss but without any consistent pattern on growing substrates. The results demonstrated that the recycled substrates, such as recycled mushroom composts can be utilized as tomato hydroponics with similar productivity as in commonly-used medium system.
Intraspecific Relationships of Lactuca sativa var. capitata Cultivars Based on RAPD Analysis
Yoo, ki-Oug ; Jang, Seok-Woo ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 273~278
The genetic variation and intraspecific relationship between 39 cultivars of Lactuca sativa var. capitata was investigated using RAPD (randomly amplified polymorphic DNA) analysis. The 12 primers out of 50 random primers were amplified for all plants tested. The 55 (78.6%) among 70 bands derived from 12 primers showed polymorphism, and 4.6 bands per primer was observed. Numbers of bands per primer was found to be 3 to 11, and average number was 5.8. The phenograms for 39 analyzed cultivars by RAPD markers did not match well with those of the result of head formation such as crisphead, butterhead, and cos type, since they were clustered monophyletic at the similarity coefficient value ranging from 0.61 to 0.98. The RAPD markers are not useful to evaluate the intraspecific variations in Lactuca sativa var. capitata cultivars.
Breeding of Parthenocarpic Cherry Tomato by iaaM Gene Transformation, and Characterization of Fruits in Transgenic Plants
Kim, Ji-Kwang ; Kim, Jin-Han ; Kang, Kwon-Kyu ; Kim, Hyun-Jung ; Nou, Ill-Sup ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 279~285
Parthenocarpy, the ability to set and develop fruits in absence of fertilization, is a desirable trait in tomato. Parthenocarpic transgenic tomatoes showed nomal vegetative growth and a phenotype indistinguishable from that of seed-derived strains. For breeding of parthenocarpic cherry tomato, Defh9-iaaM chimera gene joined to iaaM coding gene derived from Pseudomonas syringae pv. savastanoi and Defh9, ovule specific promoter, derived from Anthirrhinum majus was transformed in cherry tomatoes. A percentage of regeneration is better in cotyledon than hypocotyl. IAA was shown to be the best in 0.1 ㎎․L^-^1 and 1 ㎎․L^-^1 in BA and zeatin. Also it was shown the higher regeneration in zeatin than BA. Transgenic plants grew normally and parthenocarpic fruits were harvested. Emasculated transgenic flowers also resulted in fruit set and parthenocarpic fruits were normally developed. Fruit average weight of transgenic plants was similar to selfing and emasculation, and higher in selfing than control plants. Soluble solids of transgenic plants was lower in emasculated fruits than selfed fruits, and was similar or higher in selfed fruits than transgenic fruits. Juice pH was generally unaffected between selfed and emasculated fruits. These observations indicate that Defh9-iaaM gene may induce parthenocarpy in Solanaceae and Cucurbitaceae crop.
Breeding of a New Cucumber Variety 'Joy' with White Spine for Exportation
Seo, Jong-Bun ; Choi, Kyong-Ju ; Jung, Jong-Mo ; Shin, Gil-Ho ; Lee, Yong-Hwan ; Kim, Hyeon-Woo ; Lee, Ya-Seong ; Ahn, Jang-Soon ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 286~289
A new white spined cucumber (Cucumis sativus L.), variety ‘Joy’ was selected by cross of Sharp 5 (Saitama Vegetable Breeding Co., Ltd, Japan), mother plant and Alpha (Kurume Vegetable Breeding Co., Ltd, Japan), father plant, from 1998 to 2000 in Jeollanam-do Agricultural Research and Extension Services. The new cultivar was strong in the plant vigor and exhibited significant resistance to brown leaf spot symptoms. The percent of female flower and lateral shoot occurrence was 81% and 72%, respectively. The yield increased by 9% more than check variety, Baekseong 3 (40.1MT/ha).
Breeding of Red Pepper (Capsicum annuum). 'Younggo No. 4'
Lee, Mun-Jung ; Kwon, Tae-Ryong ; Kim, Byung-Soo ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 290~293
The study was carried out to improve the local red pepper variety, ‘Subicho’ whose origin was 'Shubi' region, the county of Youngyang, the province of Kyongsangbukdo. A lot of seed samples of ‘Shubicho’ were collected from local farmers in 1995, tested for its horticultural traits, and finally ‘Younggo No. 4’ was developed out of them in 2001. The number of days to flowering of ‘Younggo No.4’ was 110 days, which was shorter than that of check variety, ‘Kumtap’ (commercial F1 hybrid). In the ‘Subi’ region, ‘Younggo No.4’ showed good fruit quality and medium level of viral disease infection but in the adjacent counties, ‘Andong’ and ‘Bonghwa’, it showed severe viral disease infection and decreased fruit yield due to poor plant growth. The fruit yield was more dependent on the plant growth and the number of lateral branches in ‘Younggo No. 4’ than in ‘Kumtap’. The fruit quality including fruit color, pungency and sugar content was better in ‘Younggo No.4’ than in ‘Kumtap’.
Effects of Vacuum Packaging and Shelf Temperature on the Quality Changes of Golden Mushroom (Flammulina velutipes) during Simulated Shipment and Marketing
Park, Youn-Moon ; Park, Se-Won ; Hong, Se-Jin ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 294~299
Quality changes of golden mushroom (Flammulina velutipes (Curt. ex. Fr.) Karst.) were investigated during simulated shipment and marketing as influenced by vacuum packaging, packaging unit, and marketing temperature. Mushrooms were harvested in October and packaged in 30
m cast polypropylene (CPP) film bags. Vacuum status, atmospheric environment inside the packages, sensory quality factors, and stipe firmness were evaluated during shipping period at 0
C and after 21-day shipment plus 5-day marketing at 8
C or 20
C. Vacuum packaging of 200 g-unit mushroom seemed to have higher potential for quality maintenance until 14-day shipping period, while, as shipping period extended to 21 days, no significant quality differences were observed between vacuum and non-vacuum packaging. After 21-day shipment plus five-day marketing, similar levels of vacuum status and MA environments were formed in both the vacuum and non-vacuum packages. During marketing period, shelf life was extended at low shelf temperature around 8
C than at room temperature of 20
C indicating the need of cold-chain system after long-term shipment. When cold-chain system is not available, initial vacuum treatment might be beneficial on browning inhibition and texture maintenance on the shelf. Results from the experiment on packaging unit combined with initial vacuum strength suggested that relatively weak vacuum treatment at 260 Torr for 100 g-unit packages, while strong vacuum at 160 Torr could be better for 200 g-unit packages.
Nutritional Diagnosis Criterion at Early Cropping Stage in High Density Fuji/M.9 Apple Orchards
Yim, Yeol-Jae ; Jang, Jun-Yon ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 300~305
To determine the criteria of stable tree growth and optimal contents of leaf mineral nutrients for good fruit quality and high productivity without off-year cropping at early cropping stage in the high density apple orchard system (2,380 trees/ha), total 69 apple trees (feathered maiden tree of Fuji/M.9) at three different orchards were investigated growth status, crop amount, fruit quality, and leaf mineral nutrient contents for three years after first-year fruiting. The research results showed that shoot growth status, crop amount, fruit quality, and leaf mineral nutrient contents varied among both different orchards and different trees in the same orchard. Especially, lots of trees showed off-year cropping at the third year due to heavy yields at both first and second years after first fruiting. Most trees without off-year cropping yielded average 35-55 fruits per tree for three years. The followings are tree growth and levels of leaf mineral nutrients in the trees which were accomplished the production of 33
5 t․ha^-^1 and 14.0
2.0 kg per tree with fruit qualities of 320 g, 14
Brix and 0.33% acidity. For stable growth, shoot length (5cm over) with average 19
4cm on 2 year-old branch, terminal shoot length with 23
3 cm, and shoot regrowth rate with below 14% were desirable. The levels of leaf mineral nutrient in late July were 22.4
1.9 g․kg^-^1 for N, 3.03
1.42 g․kg^-^1 for P, 12.1
1.8 g․kg^-^1 for K, 10.7
2.0 g․kg^-^1 for Ca, 3.6
0.5 g․kg^-^1 for Mg, and 23
3 mg․kg^-^1 for B.
Changes in Sugars, Acids and Phenolic Contents as Influenced by Thidiazuron in Seedless Culture of 'Pione' Grapes (Vitis labruscana)
Lee, Keum-Sun ; Kim, Jin-Kuk ; Park, Il-Long ; Im, Ji-Hyun ; Hwang, Yong-Soo ; Lee, Jae-Chang ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 306~311
The experiment was aimed to find out the effect of thidiazuron (TDZ) addition in gibberellin application for the seedlessness on the changes of fruit components such as soluble sugars, acids, and phenolics in ‘Pione’ grape. The combined application of GA and TDZ increased berry weight resulted in the increase of soluble sugar content per berry but not per unit fresh weight. Reducing sugar content of ‘Pione’ grapes occupied 99.3% of total soluble sugars, indicating that ‘Pione’ grape is belonged to reducing sugar accumulator. However, ‘Pione’ berries still contained 0.7% sucrose. The changes of sugars showed sigmoid pattern. The changes of acid contents during fruit development showed a clear peak near July 19, and then decreased when sugar accumulation began to increase. Berries treated with TDZ and GA contained more acids at commercial maturity compared to GA treatment probably due to the delay of ripening. There was no difference in acid content per unit fresh weight between treatments. The content of tartaric acid was 25.7 mgㆍg^-^1fw and malic acid content was approximately 2 times higher. Berries treated with TDZ+GA contained more phenolics in the middle of fruit development but not at ripening stage. Results indicated that the addition of TDZ in seedless culture of ‘Pione’ grapes increased the contents of fruit components through the increase of berry size.
Effect of Heating Culture in Plastic House on Fruit Ripening and Quality of 'Baekmijosaeng', 'Kurakatawase' Peaches
Lim, Sang-Cheol ; Kim, Young-Ho ; Youn, Cheol-Ku ; Youn, Tae ; Kim, Seon-kyu ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 312~315
Effect of heating culture in plastic house on fruit ripening, fruit quality and yield of ‘Baekmijosaeng’ and ‘Kurakatawase’ peaches was investigated. Fruits of ‘Baekmijosaeng’ in heating treatment matured early by 22 and 48 days compared to non-heating treatment and field condition, respectively, while those of ‘Kurakatawase’ was hastened by respective 15 and 37 days. Required period for ripening after full bloom for ‘Baekmijosaeng’ were 66, 67, and 70 days under field condition, heating treatment, and non-heating treatment, respectively, while those for ‘Kurakatawase’ was 78, 85, and 88 days. Fruit quality was better in heating and non-heating treatments than that under field condition. Income index of heating treatment compared to field control was 374%, and that of non-heating treatment was 384%.
Optimum CA Condition for Four Apple Cultivars Grown in Korea
Hong, Yoon-Pyo ; Lee, Sung-Koo ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 316~320
‘Hongro’, ‘Hwahong’, ‘Tsugaru’, and ‘Fuji’ apples were placed in CA storage at 0
C immediately after harvest and those apples were additionally placed in regular air (RA) storage. The atmospheric compositions were set at the combinations of O_2 1%+CO_2 1%, O_2 1%+CO_2 3%, O_2 3%+CO_2 3%. The storage condition of O_2 1%+CO_2 1% resulted in longer storability with harder flesh firmness in ‘Hongro’ and ‘Hwahong’ apples after three months and ‘Fuji’ apples after six months than the RA storage or the condition of O_2 3%+CO_2 3%. However, ‘Tsugaru’ apples did not show significant difference in storability by different CA conditions. Organic acid content significantly decreased according to storage conditions in ‘Tsugaru’, ‘Hongro’, and ‘Fuji’ except ‘Hwahong’ apples. Hunter value ‘a’ of skin color considerably increased in the conditions of O_2 3% combinations and RA storage in all the surveyed cultivars. The storage conditions of O_2 1% combinations showed no internal browning after three months but brought out internal browning after six months in all the cultivars. Decay occurrence in those apples followed the similar tendency of internal browning. Cork spots in ‘Fuji’ apples were not observed in the storage conditions of O_2 1% combinations. From the results, it could be concluded that the suitable condition for CA storage in ‘Hongro’, ‘Hwahong’, ‘Tsugaru’, and ‘Fuji’ was the combination of O_2 1%+CO_2 1%.
Effect of Mechanical Grading on Fruit Quality during Low Temperature Storage in Early Wase of Satsuma Mandarin (Citrus unshiu Marc.)
Han, Sang-Heon ; Kim, Seung-Hwa ; Kang, Ji-Yong ; Kang, Bong-Kyoon ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 321~324
Changes in fruit quality of early-season satsuma mandarin were investigated after ripening procedure and packing house operation such as washing, wax coating, and heat drying. Compulsory dry after wax coating in the mechanical grading system promoted fruit quality deterioration even under low temperature condition. The rate of respiration 4 days after the storage, averaging 2μL․kg^-^1․h^-^1, was lower than that of start of the examination. In pre-graded fruits, incidence of decay increased after 10 days of the storage. In contrast, decay was low at 0.3% level after 17 days of storage when fruits had not been pre-graded in mechanical grading system. The results indicate that forced heat drying should be avoided after waxing. Function of a sorting machine should be improved to reduce drop impact during the grading procedure. Cold chain system may alleviate post-storage loss of pre-graded early-season satsuma mandarin fruit.
Screening System for Crown Gall Resistance by Pathogen Inoculation in Grapes
Yun, Hae-Keun ; Roh, Jeong-Ho ; Park, Kyo-Sun ; Cha, Jae-Soon ; Jeong, Sang-Bouk ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 325~328
An attempt was made to develop a screening system for resistance to crown gall by inoculating Agrobacterium vitis Cheonan 493 in grapes. ‘Campbell Early’ and ‘Kyoho’ were used as plant materials for the pathogen inoculation in this study. Tumor development in grapevines was significantly affected by bacterial concentration, temperature, and artificial wound size for inoculation of pathogen. The tumors were formed most highly in grapevines inoculated with pathogen at 26
C. The highest tumor occurrence and the biggest tumors were found in plants inoculated with pathogenic bacteria adjusted to 10^9 cfu․mL^-^1 at 26
C in ‘Kyoho’ and ‘Campbell Early’ cultivars. It was found that the bigger tumors were formed in the more severely wounded-plant stems and the biggest tumors appeared on the 3.1 mm^3-sized holes.
A Newly-Developed Pollen Extender Used for Artificial Pollination in Fruit Trees
Kim, Jeam-Kuk ; Lee, Han-Chan ; Yoon, Ik-Koo ; Moon, Byung-Woo ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 329~332
This study was conducted to develop new artificial pollinating extender from 1998 to 2000. Fruit set in apple and pear were very higher in artificial pollinating extender than in open pollination (control). Between previous extender lycopod and newly developed extender, however, no differences in fruit set were observed. Fruit size was larger, soluble solids was higher and the number of seed per fruit was more in artificial pollinating extender than letting alone in ‘Fuji’ apple, but there were no differences in fruit quality between artificial pollinating extender and letting alone in ‘Niitaka’ pear. Also, there were no differences in fruit set from one hour to 16 hours after mixing pollen with newly developed pollinating extender. Therefore, newly developed extender can substitute lycopod, previous artificial pollinating extender.
'Purple Queen' Plum with Beautiful Appearance and High Quality
Jeong, Kyeong-Ho ; Jun, Ji-Hye ; Kang, Sang-Jo ; Kwack, Yong-Bum ; Jeong, Sang-Bouk ; Park, Kyo-Sun ; Yun, Hae-Kun ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 333~335
‘Purple Queen’ is first released through plum breeding program of National Horticultural Research Institute (NHRI) in Suwon, Korea. The new variety blooms in mid April. The blooming time is similar to those in other varieties such as ‘Formosa’, ‘Santa Rosa’, and ‘Soldam’. Its flowers have rich pollen grains but show severe self-incompatibility and cross-incompatibility with ‘Soldam’. Therefore, pollinizer such as ‘Formosa’ should be planted. Tree growth habit is medium in vigor with a semi-upright growing habit. Spurs are on main fruit bearing branch. Fruits ripen in late July, three days earlier than those of ‘Santa Rosa’. Fruit is round and medium sized, with 75 g average fruit weight. Fruit skin color is purplish red, while flesh color is yellow. Soluble solids content of fruit is about 12.8
Bx and acidity is low. The variety shows field resistance to brown rot (Monilinia fructicola) and bacterial leaf spot (Xanthomonas campestris pv. pruni).
Growth Response and Flower Coloration of Cut Iris as Influenced by Different Shading Levels and Planting Dates in Highlands
Kim, Su-Jeong ; Nam, Chun-Woo ; Lee, Ho-Sun ; Yoo, Dong-Lim ; Ryu, Seung-Yeol ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 336~340
This experiment was conducted to find out the optimum planting date and shading level of cut Iris hollandica in highland. Iris ‘Blue Magic’ was planted at four different dates (Jul. 31, Aug 8, 16 and 24) and cultivated under rain-shelter with different shading levels (0, 35, 55%). For production of marketable cut-flowers, iris should be planted later than Aug. 8 and Aug. 16. By planting at the time, it took about 55 days from planting to flowering. The longest cut flower, and highest marketability were obtained when iris were planted on Aug. 8 with 55% shading. The chlorophyll content of leaves and Hunter’s value of flowers also increased by 55% shading. Therefore, for production of marketable cut flowers, iris should be planted later than early to mid August with 55% shading in highland culture from September to October.
Plant Stresses of Two Araceae Foliage Plants Cultured by Hydroculture and Plant Activity Compared with Soil Culture
Baik, Jeong-Ae ; Jang, Eu-Jean ; Park, Chun-Ho ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 341~345
In order to elucidate some stresses of plant by hydroculture, two kinds of Araceae foliage plants were experimented. The external plant growth of Aglaonema and Epiprenum were higher in hydroculture than that of soil culture. However, root activity, protein contents and total chlorophyll contents of Aglaonema in hydroculture were lower than those in soil. On the contrary Epiprenum was somewhat stable in both of internal and exterior plant growth when grown in water compared with Aglaonema. The antioxidant enzymes, such as POD and PPO in these two plants, decreased when those were grown by hydroculture. From the above results, it could be concluded that the plant growth was well and physiological substances were not changed significantly by hydroculture when the two plants were transplanted from soil pot to hydroculture medium.
Growth Characteristics of Sedum oryzifolium in Extensive Green Roof Systems
Kim, In-Hye ; Heo, Geun-Yeong ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 346~352
This study was carried out to develop an extensive green roof system which would require low maintenance and therefore could be used for existing rooftops. To achieve these goals, the conceptual model was induced by past studies and the experimental systems were deduced from the conceptual model. On the growth of Sedum oryzifolium in these systems, the effects of substrate type, soil depth, and drainage type were investigated from 3 April to 17 October 2002. Substrates were an alone type formulated by blending crushed porous glass with bark (6:4, v/v) and a blending type formulated by blending the alone type with loam (1:1, v/v). Soil depths were 5 cm, 10 cm, and 15 cm. Drainage types were a reservoir-drainage type and a drainage type. And, the weight of each system was estimated to avoid the risk of overload on the existing rooftops. The growth was higher in the blending type than in the alone type, the highest in 10 - 15 cm soil depth, and not significantly different in the drainage type. 15 cm soil depth systems and the reservoir-drainage type + 10cm soil depth systems couldnʼt avoid the risk of overload on the existing rooftops because they were over the permissible load about 100 kg․m^-^2. In consideration of the system weight and the effects on the plant growth, the system should adopt the blending type in substrate type, 10cm in soil depth, and the drainage type in drainage type.
Leaf Burn Development in Hosta Native Species and IntroducedCultivars in Outdoor Gardens
Lee, Jong-Suk ; Seo, Hee-Eun ; Hong, Jeong ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 353~358
The study was conducted to investigate growth adaptability of Hosta species and introduced cultivars in outdoor gardens in Seoul, Korea. H. rectifolia ‘Chionea’, H. ‘Blue Moon’, and H. sieboldiana ‘Frances Williams’ showed brown leaves before July. In H. caerulea and H. ‘Blue Angel’, the browning symptom appeared during July to August. H. ‘Fortunei Aureomarginata’, H. ‘Moerheimi’, H. plantaginea, H. sieboldii ‘Kabitan’, H. ‘Love Pat’, H. ‘Stilletto’, and H. ‘Zager’s White Edger’ showed no changes of leaf color at high temperature and light intensity. Changes of chlorophyll content in leaves were divided into two types. Non-changed types were H. ‘Halcyon’, H. ‘Hadspen Blue’, H. ‘August Moon’, H. ‘Invincible’, H. lancifolia, H. ‘Pearl Lake’, H. ‘Royal Standard’, H. ‘Silver Crown’, H. ‘Zounds’, and H. plantaginea ‘Aphrodite’, whereas the others showed reduction in chlorophyll contents. Chlorophyll contents of H. capitata for. albiflora, H. ‘Fortunei Albopicta’, H. ‘Fortunei Hyacinthina’, H. caerulea, H. ‘Blue Moon’, H. ‘Blue Angel’, and H. ‘Sharmon’ decreased from mid August. H. minor, H. plantaginea, H. ‘Blue Wedgwood’, H. ‘Krossa Regal’, H. ‘Big Daddy’, H. ‘Blue Umbrellas’, H. ‘Bressingham Blue’, H. ‘Purple Dwarf’, H. ‘Sweet Susan’, H. clausa var. clausa, and H. yingeri were diminished from early September. Chlorophyll contents of H. ‘Fortunei Obscura’, H. ‘Gold Edger’, H. ‘Elisabeth’, H. ‘Undulata Erromena’, H. capitata, H. clausa var. normalis, H. ‘Tokudama’, H. ventricosa, H. ‘Love Pat’, and H. ‘Honeybells’ began to reduce from mid September. And in H. ‘Sum and Substance’, H. ‘Birchwood Parky’s Gold’, and H. longipes, chlorophyll content decreased from early October. After mid October, ornamental value disappeared from all the species and cultivars, because most leaves were burned out.
Pollen Germination of Hemerocallis spp. Affected by Media Type andStorage Temperature
An, Min-Sil ; Jo, Jong-Hyeon ; Choe, So-Ra ; Im, Hoe-Chun ; Choe, Dong-Chil ; Park, Yun-Jeom ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 359~361
The effects of media type, storage temperature on pollen germination of Hemerocallis spp. were examined. The percentage of pollen germination was higher in all of media type than in the basal medium (sucrose 15% + agar 5%). Especially, GN and GL media including such as CaCl_2, KNO_3 and Ca(NO_3)․H_2O were more effective to improve the pollen germination than the GC medium including only H_3BO_3. Irrespective of species, periodical germination percentage according to storage temperature showed a strong decline from 2days in room temperature storage. In the case of 4
C, H. dumortieri and H. thunbergii showed a rapid decline pollen viability from 30days after storage, but the pollen in -20
C storage was maintained pollen viability above 40% until 180 days after storage. Since -20
C storage for pollen viability is effective, interspecific and intergeneric cross could be possible despite differnet flowering period.
Growth, Flowering, and Variation of Somaclones as Affected by Subcultures and Natural Materials Supplemented to Media in Phalaenopsis
Hong, Eui-Yon ; Yun, Jong-Sun ; Kim, Ik-Hwan ; Yun, Tae ; Lee, Cheol-Hee ; Kim, Tae-Su ; Paek, kee-Yoeop ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 362~368
Plantlets which were differentiated after long-term subculturing the protocorm-like bodies (PLBs) according to the media in the two Phalaenopsis lines were grown to flowering in a greenhouse, and the pheonotypic characteristics of leaves and flowers and the morphological variation in leaves were investigated. PLBs were subcultured by 12 times on the Hyponex media supplemented with the 200 ml․L^-^1 coconut water (No. 1 medium), 60 g carrot juice, 60 g banana juice and 60 g potato juice (No. 2 medium), or 60 g carrot juice, 60g apple juice and 60 g onion juice (No. 3 medium), and the differences in the growth of PLBs among the media were not significant. The morphology and growth in the normal plants of in the both of ‘Pink flower’ and ‘White flower’ lines were uniform irrespective of the media and the times of subculture. The flowers of normal plants between the media were uniform in size and they were identical to those of the mother plant, while the flowers of variant plants were shrunk, abnormal and asymmetric. In the ‘Pink flower’ line, the morphological variations in leaves after 12 subcultures of PLBs were 38% in the No. 1 medium, 13% in the No. 2 medium and 7% in the No. 3 medium, and in the ‘White flower’ line, the variations were 33% in the No. 1 medium and 1% in the No. 2 and No. 3 media, respectively.
Effects of Flowering Stage, Temperature, and Vibration Treatments during Simulated Transport on the Postproduction Quality of Potted Kalanchoe blossfeldiana
Kwon, Youn-Jung ; Park, Shin-Ae ; Byeon, Hye-Jin ; Son, Ki-Cheol ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 369~374
The influences of flowering stage, transport temerature, and vibration during simulated transport on the postproduction quality of Kalanchoe blossfeldiana ‘Altar’ were studied. For this study, potted plants with 5% or 50% flowering rate were used. After they were sleeved and boxed, each box was stored in the chamber set in the transport temperature of 12
C or 18
C, dark condition during 5 days for the simulation of real export. During simulated transport, vibration was given to boxes with the strength of 1 g (50 Hz) for 12 hrs per day. According to the results, there were no differences in postproduction quality between treatments as affected by the presence or absence of vibration during simulated transport, but there were differences according to flowering stage and transport temperature. Potted plants transported with 50% flowering rate showed a little bit of wilting phenomena in a few flowers immediately after transportion, but was two times high in flowering rate during postproduction period as compared plant transported with 5% flowering rate. On the other hand, potted plants transported with 5% flowering rate bloomed 10-20% immediately after transportation, showed wilting phenomena in 2 weeks later, and prolonged their longevity about 2 weeks over plants transported with 50% flowering rate. As plants were transported at 18
C instead of 12
C, flower longevity was shortened eventhough flowering rate increased. Conclusively, it has been shown that there was no injury symptom in Kalanchoe due to vibration during transport, and both flowering stage and transport temperature must be considered together for obtaining the best quality of postproduction.
Effects of Certain Pretreatment Substances on the PostharvestQuality of Cut Rose
Ryu, Myeong-Hwa ; Kim, Yeo-Jeong ; Byeon, Hye-Jin ; Son, Gi-Cheol ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 375~380
In order to develop the pretreatment solution which can apply universally for cut rose, ‘Red Sandra’, ‘Rote Rose’, and ‘Saphir’ were pretreated with tap water (TW), Chrysal RVB, Hwajung, or several pretreatment solutions with single or mixed compounds containing 700 ppm aluminum sulfate (AS), 0.5 mM STS (STS), 1% glucose, or 10ppm lysophosphatidylethanolamine (LPE). In flower diameter and fresh weight of cut rose, STS+AS and STS+AS+glucose treatmenst were very effective in extending the vase life as compared to other treatments in ‘Red Sandra’ and ‘Rote Rose’, but those treatment showed little effect in ‘Saphir’. Moreover, treatments containing LPE were found not to be effective in prolonging the vase life in all cultivars. Most treatments weren’t efficient to inhibit bent neck regardless of cultivar, whereas, some treatments were significantly effective in delaying petal withering of cut rose. For example, petal withering of ‘Rote Rose’ was delayed ca. 3.9 days in AS, 4 days in STS+AS, 4.5 days in STS+AS+ glucose, and 5.3 days in STS+AS+ LPE+glucose over that in TW. Also, Petal withering of ‘Rote Rose’ treated with STS+AS and STS+AS+glucose was delayed about 1.5 days and 1 day, respectively, than that treated with TW, and that of ‘Saphir’ maintained in STS+AS+glucose treatment was delayed a little bit over that maintained in TW without statistical significance. According to all data in this study, STS+AS and STS+AS+glucose were found to be relatively universal pretreatments effective in extending vase life of three cultivars eventhough the function of each pretreatment was varied with cultivar.
Effects of Planting Date and Shading on the Flowering and Cut Flower Yield of Sandersonia aurantiaca in Highland
Hong, Su-Young ; Nam, Chun-Woo ; Suh, Jong-Taek ; Yoo, Dong-Lim ; Ryu, Seong-Yeol ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 381~385
To improve the yield and quality of cut flower of Sandersonia, this experiment was conducted in three different planting date (June 1, July 1, and Aug. 2) and in two shading grades (0, 55%) in the highland. Tuber weight in the experiment was 10-15 g. Plant height was longer (6.5-17.1 cm) in 55% shading treatment than in non-shading, and the effect of shading treatment was increased in early planting date. It was more effective when planted in June and July. The first flowering order was initiated one node faster in non-shading than 50% shading treatment, but the number of flowers were increased in 55% shading treatment. Marketable yield of cut flower planted in June was 92.0% but it was slightly reduced to 87.2% and 83.9% planted in July and August. The ratio of Hip and Waist value was from 1.55 to 1.73, and it was reached in marketable range. Therefore, the cultivation of Sandersonia in highland is recommended to be planted before August for the growing period and 55% shading treatment was increased the quality of cut flower in highland.
Storage Solution and Temperature Affect the Vase Life and Quality of Cut Gerbera Flowers
Yoo, Yong-Kweon ; Kim, Won-Sun ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 386~392
The effects of 8-hydroxyquinoline sulfate (HQS) and sucrose treatment in storage solution and temperature for effective storage of cut gerbera flowers (Gerbera hybrida) were evaluated. Fresh weight, water uptake, and diameter of flowers stored in solution containing 400 mg․L^-^1 HQS and 3% sucrose were better than the other treatments without regard to storage duration. Also, treatment of 400 mg․L^-^1 HQS and 3% sucrose inhibited scape bending after storage and significantly prolonged vase life. Vase life and quality of cut gerbera flowers stored at 0
C were maintained better than at 10
Plant Morphological Characteristics and Cross Compatability in Genus Dianthus for Bedding Plant
Kim, Sun-Ki ; Ahn, Byung-Joon ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 393~397
Accessions of Dianthus species were analogized for their growth and flower characteristics as well as their interspecific cross compatibility. Seventeen species or ecotypes were grouped as three classes based upon their plant heights. Excepts D. chinensis (#190, 191) and D. tianschanicees, which have 38, 34 and 20 petals respectively, most plants have flowers of 5 petals. In interspecific hybridization, cross compatibility was confirmed among the species of D. chinensis, D. arenarus, D. plumarius and fertility rate was the highest with 70% in the cross of D. plumarius and D. serotinus. Chromosome numbers of D. chinensis, D. barbatus and D. knappii were confirmed as 2n=30. Chloroplast numbers were counted from guard cells of four species. Average number was 9 per cell and significant difference in chloroplast number was not found among the species.
Cross Compatability and Morphological Characteristics of the Progenies in Hybridization of Oriental lily Cultivars
Kim, Sun-Ki ; Ahn, Byung-Joon ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 398~402
Twelve oriental lily cultivars were hybridized in 32combinations using a modified cut-style pollination method. Rate of formation and number of seeds in pods varied from 0 to 100% and 11 to 245 respectively according to cross combinations. The seeds, treated in 0.5% NaOCl for 3 hours, germinated mostly within 4 weeks in vitro on 1/2 MS medium supplemented with 1% sucrose and 0.3% Gelite. The seedlings were grown in greenhouse to make flowering bulds and, from the fourth year, progenies of 7 crossing combinations began to bloom. Most progenies showed medium floral characteristics of parents. Among the progenies of selfed ‘Le Reve’, a double flowering individual was found. A hybrid of ‘Marco Polo’ x ‘Muscadet’ showed an unusual four petal flowers. And various aesthetically valuable progenies were found among the hybrids of the Oriental cultivars. These hybrids might be useful to select new cultivars following further tests for their characters and performance in cultural conditions.
Efficient Artificial Propagation Method and Chipping Propagation Condition for the Bulb of Lycoris koreana
Park, Yun-Jum ; Yoo, Sung-Oh ; Bae, Jong-Hyang ; Cho, Ja-Yong ; Heo, Buk-Gu ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 403~406
The study was carried out to clarify the effects of several artificial propagation methods and chipping propagation conditions on the bulblet development of Lycoris koreana for the efficient artificial propagation. The bulbs of Lycoris koreana were artificially propagated and cultured for 5 months. Number of bulblets formed by propagation methods was in the order of twin-scaling (43.12), half-chipping (25.20), chipping (19.24), notching (14.51), coring (1.01), and scooping (1.05), etc. Weight of bulblets was in the order of notching (1.01 g), chipping (0.93 g), coring (0.68 g), half- chipping (0.53 g), twin-scaling (0.37 g), and scooping (0.15 g), etc. Chipping was the optimum propagation method for the bulblet production of Lycoris koreana in this experiment. Numbers of bulblets were significantly in increased in vermiculite. However, weight of bulblet increased significantly in the plot of field soil plus culture medium by 0.89 g to 0.90 g. Number and weight of bulblets were increased when 40 explants were used extremely much more. Number and weight of bulblets increased significantly when bulb of Lycoris koreana was propagated at 20
C than 15
C. The bulblet development increased in the light condition. However, weight of bulblet increased in the dark.
Effects of Graft Stock Plants and Growth Regulator Treatment on Tubercle Proliferation in Gymnocalycium mihanovichii var. friedrichii Werd
Kim, Sun-Ki ; Ahn, Byung-Joon ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 407~411
The research was carried out to develop a mass tubercle propagation method of Gymnocalycium mihanovichii var. friedrichii Werd. Graft stock plants were compared for tubercle proliferation, and effects of plant growth regulators were also tested. When Gymnocalycium mihanovichii var. friedrichii Werd ‘Black ruby’ were grafted to Heoylocereus trigonus Hwa. and Eriocereus jusbertii, more tubercles were formed than grafting to Cereus tetragonus. However, in Gymnocalycium mihanovichii var. friedrichii Werd ‘Myungwol’, Cereus tetragonus was the most effective, and there was no significant difference among the stock plants in Gymnocalycium mihanovichii var. friedrichii Werd ‘Pink’. Therefore, Heoylocereus trigonus Hwa. being used practically the most at present, is confirmed to be the best choice as a graft stock plant. In Bimoran cacti such as Gymnocalycium mihanovichii var. friedrichii Werd ‘Myungwol’, ‘Pink’ and ‘Black ruby’, thidiazuron (TDZ) application at 100 mg․L^-^1 was found to increase tubercle formation. GA showed no significant effect on tubercle number, but affected tubercle growth by 78%.
Long Term Preservation of the Pressed Leaves by Boiling and Inorganic Salts Treatment
Byun, Mi-Soon ; Lee, Sung-Ja ; Kim, Kiu-Weon ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 412~416
The study was conducted to prevent the discoloration or decoloration during drying process and after making works of the pressed leaves. The leaves of Parthenocissus tricuspidata, Rosa hybrida cv. Paleo and Rumohra adiantiformis were treated with boiling water containing various divalent cations in order to modify the chlorophyll molecules. Five inorganic salts of CaSO_4, CuSO_4, CuCl_2, MnCl_2, and ZnSO_4 were utilized as sources of divalent cations for respective treatment with concentration of 50 g‧L^-^1 for 20 minutes. Results obtained were as follows. The leaves of three species treated with CuSO^4 showed the least difference of color among treatments when compared with the fresh green leaves. Color difference of the leaves treated with 27 μmol‧m^-^2‧S^-^1 illumination for 16 hours was larger than that preserved under darkness and it became larger with days after treatment. Decoloration was not observed on the leaves treated with 50 g‧L^-^1 CuSO_4 for 20 minutes not only just after drying but also even after illumination. Chlorophyll content of the leaves treated with CuSO_4 was higher than those not treated. It was interesting that the chlorophyll a/b ratio was reversed with 0.3:1 between the leaves with and without CuSO_4 treatments. It was also found that the leaf protein content with CuSO_4 treatment was lower than that not treated. Above results will be useful to prevent the discoloration or decoloration of pressed leaves by addition of inorganic salts in boiling treatment and will contribute to both practical use and popularization of the pressed flower.
Preservation of the Green Color and Flexibility by Glycerination and Artificial Pigment in Dried Leaves of Hedera and Camellia
Byun, Mi-Soon ; Park, Ju-Young ; Kim, Kiu-Weon ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 417~421
The study was conducted to make the dried leaves of Hedera helix and Camellia japonica which can keep flexible and green color by glycerinaton and artificial pigment. To increase flexibility experimental materials was put into glycerin solution (glycerin: distilled water = 1:2, v/v). The flexibility of dried leaves could be increased by vacuum infiltration of the glycerin solution for 60 min in Hedra helix and for 80 min in Camellia japonica. But green color could not be maintained only by this treatment, so it was possible to keep green color by adding the green artificial pigment (Whajung), Hedera helix for 200 mL‧L^-^1 and Camellia japonica for 500 mL‧L^-^1. As a result, the dried leaves of Hedera helix and Camellia japonica could keep green color and flexibility by the mixed treatment of glycerin, artificial pigment and vacuum infiltration.
Natural Dyeing of Skeletonizing Leaves Using Dyestuffs Extracted from Lithospermum erythrorhizon
Park, Yun-Jum ; Cho, Ja-Yong ; Kim, Sun-Ho ; Heo, Buk-Gu ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 422~427
The study was conducted to investigate the different sampling and dyeing conditions using the raw Lithospermum erythrorhizon on the dyeing degrees of skeletonizing leaves, and to apply the natural dyeing to the skeletonizing leaves widely. Pigments were extracted from Lithospermum erythrorhizon using the different solvents such as distilled water, methanol, and ethanol. Surface colors of dyed skeletonizing leaves were affected by the different solvents and mordants. Overall colors of dyed skeletonizing leaves showed an order of descent Y, YR, R, G, and GY, and so on. Coloring matter concentration was more or less increased, however, less than 5.78, when dyed using dyestuffs solutions extracted by methanol and treated skeletonizing leaves with a mordant of Cr. Coloring matter extracting temperatures of the Lithospermum erythrorhizon for the dye of skeletonizing leaves increased from 60 to 90
C. The degrees of yellow in dyed skeletonizing leaves were shown at the higher dyeing concentrations of dyestuffs solutions. The dyeing degrees of skeletonizing leaves were extremely high by 14% in the dyeing concentration of dyestuffs solutions extracted from the Lithospermum erythrorhizon. Dyeing colors in skeletonizing leaves were changed by pH in dyestuffs solutions, in terms of YR by pH 2 to 4, Y by pH 6 to 8, and GY by pH 10, and so on. Temperatures in dyestuffs solutions for the better dye of skeletonizing leaves were as follows 90
C, and 10
C. Color value degrees were increased at lower temperatures of dyestuffs solutions. Skeletonizing leaves showed an order of descent YR when treated with acid mordants, whereas, an order of descent Y when treated with alkaline and metallic mordants.
Effects of Concentration, Temperature, Immersion Period, and pH of Tartaric acid on the Restoration of Petal Colors for the Materials of Pressed Flowers
Park, Yun-Jum ; Cho, Ja-Yong ; Jang, Hong-Gi ; Heo, Buk-Gu ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 428~433
The study was carried out to investigate the effects of concentration, immersion period, temperature and pH of tartaric acid solution, and the combined application with spreader painting on the effective restoration of petal colors for the several materials of dried and pressed flowers. For the restoration of petal colors for dried flowers, the optimum immersion concentrations were measured as 0.3% for Rosa hybrida Hort. ‘Cardinal’, 0.1% for golden wave Coreopsis drummondii, Rosa multiflora, and Rhododendron schlippenbachii, and 0.1 to 0.9% for Hibiscus syriacus Hort. ‘Asadal’, and so on. And the optimum immersion treatment period of the 0.5% tartaric acid solution (71～80
C) were measured as 3 min for Rosa hybrida Hort. ‘Cardinal’, 1 min for Rhododendron schlippenbachii and golden wave Coreopsis drummondii, and within 3 min for Hibiscus syriacus Hort. ‘Asadal’ and Rosa multiflora, etc. At ambient temperature, 10 to 20 minutes were needed to restore the discolored petal colors for the materials of dried and pressed flowers such as Rosa hybrida Hort. ‘Cardinal’, Dicentra spectabilis and Paeonia suffruticosa immersed in the 0.5% tartaric acid solution. The effective immersion temperature for the restoration of discolored petal colors for Rosa multiflora immersed in the 0.5% tartaric acid solution were 81
C to 90
C. And the optimum pH were measured as 0.5 for the restoration of discolored petal colors for Rosa hybrida Hort. ‘Cardinal’, Paeonia suffruticosa, and Dicentra spectabilis, etc. Combined application of 0.05% spreader painting with tartaric acid solution was effective for the adsorption of tartaric acid to restore the petal colors for the several materials of dried and pressed flowers.
Effects of Treatment of Light, Temperature and Priming on Germination of Angelica acutiloba KITAGAWA Seeds
Moon, Jong-Ok ; Park, Kuen-Woo ; Kang, Ho-Min ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 434~439
The study was conducted to determine the appropriate temperature and light conditions, and priming chemicals, their concentration and duration for improving germination of Angelica acutiloba KITAKWA seeds. The germination percentage and rate, T_5_0, and day of first germination of Angelica acutiloba KITAKWA seeds increased with the rise of temperature from 15
C to 25
C. But they decreased at 30
C and Angelica acutiloba KITAKWA seeds did not germinate at 35
C. While light treatment enhanced germination percentage at 25～30
C range, the light conditions did not affect germination percentage at 15～20
C range. Angelica acutiloba KITAKWA seeds primed with distilled H_2O and 0.1 M Ca (NO_3)_2 germinated better than any others. Priming treatments at 0.3 or 0.5 M KNO_3 and 0.3 or 0.5M K_3PO_4 inhibited germination of Angelica acutiloba KITAKWA regardless of priming duration. Germination percentage did not depend on priming treated duration. While germination rate was enhanced in 5days treatment more than 3days treatment, but it reduced in 7days treatment. When Angelica acutiloba KITAKWA seeds primed in distilled H_2O and KELPAK (extract of Ecklonia maxima) for 5 and 7 days, the germination rate was higher than non-primed seeds (control). Angelica acutiloba KITAKWA seeds primed without regard for chemical types showed higher T_5_0 than that of control, especially, T_5_0 was shorten 6days by distilled H_2O and KELPAK treatment compared with control.
Distribution of Native Hibiscus hamabo and Ecological Characteristics of Naturally Inhabited Areas in Jeju Island
Ahn, Young-Hee ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 440~446
The study was conducted to investigate distribution and ecological characteristic of the naturally inhabited areas for native Hibiscus hamabo in Jeju Island. Eight major naturally populated habitats in the Jeju island for wild Hibiscus hamabo are located on the southeast side of the island at 5～20 m in altitude and are in very good sunny areas. Most wild Hibiscus hamabo were found at the road edge in the sea coast. The ground drained very well since soil was made of rock or gravel, but it could keep the proper air humidity due to the sea. In the naturally populated areas, the vegetation including the Hibiscus hamabo were investigated as the communities of two types; Vitex rotundifolia and Miscanthus sinensis community. Among these communities, Vitex rotundifolia community was mostly distributed across the slop of roadside of rock or gravel, and Miscanthus sinensis community was found in relative deep layer of surface soil condition. The result of BC ordination revealed that the plots surveyed were arranged according largely to the vegetation units of the communities. The total of 43 taxa dividing into 26 families, 42 genera, 40 species and 3 varieties existed in these habitats. Most of these plants were heliophytes, which love sunshine, vine plants such as Ampelopsis heterophylla, Lonicera japonica, Rosa multuflora, Clematis mandshurica, or naturalized plants like Ambrosia artemisiifolia, Erigeron canadensis are also shown. From analysis of a propagation strategy of plant species growing around wild Hibiscus hamabo, phalanax plant species were 45%, infiltrative plant species were 30%, and guerrilla plant species were 25%. According to the results, the surveyed area is thought to be the place where an environmental disturbance has been occurred severely. Therefore, the vegetation around the habitats might be managed artificially in order to keep sound growth of the native Hibiscus hamabo.
Soil Conditioner Treatment and Growth Responses of Artemisia princeps and Helianthus annuus for Ecological Restoration in Abandoned Zinc Mine Area
Choi, Moon-Kyoung ; Chiang, Mae-Hee ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 447~450
The study was carried out to examine the effects of soil conditioner application on the soil reclamation and growth response of Artemisia princeps and Helianthus annuus in the vicinity of heavy metal-contaminated abandoned zinc mine area. The efficiency of soil conditioners on soil reclamation was evaluated based on the degree of plant growth in the contaminated soils. The growth of A. princeps and H. annuus was promoted by the treatment of phosphorus and organic matters, and dolomite, respectively. Phosphorus increased the total chlorophyll content of A. princeps and H. annuus, while the plants treated with dolomite had 10 to 20% higher chlorophyll fluorescence. The results obtained in the present study could provide basic information about eco-engineering through soil reclamation.
Physiological and Biochemical Responses, and Heavy Metal Accumulation of Artemisia princeps and Helianthus annuus in the Abandoned Zinc Mine Area for Phytoremediation
Choi, Moon-Kyoung ; Chiang, Mae-Hee ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 451~456
The study was carried out to examine physiological and biochemical response, and heavy metal accumulation in Artemisia princeps and Helianthus annus grown in the vicinity of an abandoned zinc mine as influenced by the soil conditioner application. Cleaning effects of soil conditioner on heavy metal-contaminated soils were evaluated as related to phytoremediation. By the application of phosphorus, sludge, and organic manure to soil, the amount of soluble protein increased in A. princeps. Phosphorus and dolomite boosted the amount of soluble protein in the case of H. annuus. A. princeps treated with sludge and H. annuus treated with organic manure and chitosan had a higher peroxidase activity and amount of malondialdehyde than any other treatment tested. Changes of heavy metals concentrations in roots of A. princeps and shoots of H. annuus were the greatest. In addition, in terms of concentration of heavy metals per plant, organic manure-treated A. princeps and dolomited-treated H. annuus were the highest. A. princeps, highly metal-resistant plant, showed higher phytoremediation effects when a soil conditioner with large amount of organic matters was applied to contaminated soils. In the meantime, in the case of H. annuus, a less tolerant species, using soil conditioners that change physical characteristics of soil turned out to be effective. The results obtained could provide basic information about eco-engineering through phytoremediation.
Characteristics of Unrecorded Cymbidium koran Native to Jejudo, Korea
Lee, Jong-Suk ;
Korean Journal of Horticultural Science and Technology, volume 21, issue 4, 2003, Pages 459~461
Cymbidium koran Makino was an unrecorded orchid plant in Korea. However, the cymbidium and its habitat were found at the seashore of Seogwipo area in Jejudo, Korea. The morphological characteristics and habitation environment were surveyed. Cymbidium koran is distributed in alongshore slope at 30 meters above the sea level in Jejudo. The result of the survey is the first report about Korean native Cymbidium koran Makino.