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Korean Journal of Horticultural Science and Technology
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Effects of Pinching Methods and Cultivars on Growth and Fruiting of Green Pepper
Seo, Jin-Wook ; Hwang, Jae-Mun ; Oh, Se-Myeong ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 297~303
This study was carried out to investigate effects of pinching methods of seedlings and cultivars on branching habits, growth, and fruiting of green pepper (Capsicum annuum L.). Plant growth of pepper cv. Cheongyang was vigorous compared to cv. Nokwang during whole period, and their growth were significantly affected by pinching methods. Abnormal branching types like triple or fusion branches were much shown in cv. Nokwang than Cheongyang, and by topping treatment at main stem (TMS) than topping the first node of main stem (TFN). Number of lateral branches developed from the main stem showed significantly difference among cultivars and pinching methods, but lateral branch length was longer in TMS of cv. Cheongyang than other pinching methods. At the end of growth, fresh and dry weight of top parts of plant were differed significantly among treatments. And total fruit weight of green fruit did not show statistically difference among pinching treatment but showed between cultivars. The number of commercial fruit of cv. Cheongyang was highly marked on July 15, and that of cv. Nokwang was done at 10 days early by TMS treatment. Therefore, pinching methods of seedling should be adapted properly according to branching habits of pepper varieties.
The Actual Marketing States of the Fresh Vegetables for Salads at Five-Day Traditional Markets and Large Retail Stores in Chungnam District
Heo, Buk-Gu ; Yang, Seung-Ryeol ; Yu, Sung-Oh ; Park, Yun-Jeom ; Jo, Ja-Yong ; Cheon, Sang-Wook ; Jang, Hong-Ki ; Byun, Kyeong-Seop ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 304~309
We have examined the actual marketing state for fresh vegetables at the five-day traditional markets and the large retail stores in Chungnam region from April to May, 2006, in order to take fundamental data for the development and industrialization of favorable wild vegetable resources. The number of fresh wild vegetables was ranged from 13 to 26 according to the five-day traditional markets. Twenty-one kinds of fresh vegetables were present in the traditional markets, and twenty kinds in the large retail stores. Mainly fresh vegetables including Aster scaber, Chrysanthemun coronarium var. spatiosum, Malva verticillata, Oenanthe javanica, and Petasites japonicus have been sold in large quantities both in the traditional markets and the large retail stores. Around 86% of the sellers at the traditional markets were above 51 years old. Over 85% of the stores at the traditional markets investigated were selling less than six items of fresh wild vegetables.
Biochemical Characterization of S RNase Inhibitors on Plants Showing Gametophytic Self-Incompatibility
Kim, Jeong-Hee ; Park, Sun-Ki ; Sin, Dong-Il ; Jeong, Il-Kyeong ; Son, Tae-Kwon ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 310~316
S RNases in the S locus are highly expressed in the stylar tissue of wild species tomato, ‘Fuji’ and ‘Tsugaru’ apples showing GSI system. In this study, S RNases from wild species of tomato (wild-tomato), ‘Fuji’ and ‘Tsugaru’ apples were purified by gel filtration and tested on RNase activity. The molecular weights of S RNases were approximately 24 KDa, respectively. Wild-tomato showed the 2.6 and 1.6 times higher RNase activity than ‘Fuji’ and ‘Tsugaru’ apples. In order to abolish the ribonuclease activity causing GSI in these plants, inhibition of RNase were tested using several chemicals including zinc glycolic acid, zinc gluconic acid, zinc propionic acid and zinc acrylic acid. zinc glycolic acid at 10 millimolar reduced the RNase activity by approximately 30% in wild-tomato. However other chemical tested had no inhibitory effect in ‘Fuji’ and ‘Tsugaru’ apples. These experimental results is thought be useful for the development of S RNase inhibitor on plants showing GSI.
Characteristics of Water Content, Carbohydrate and Bulb Development under Different Clipping Time of the Leaf Sheath after Garlic (Allium sativum L.) Harvesting
Nam, Sang-Sik ; Choi, In-Hu ; Bang, Jin-Ki ; Bae, Sang-Kyeong ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 317~321
This study was conducted to investigate the water content, carbohydrate and bulb development according to different clipping time of leaf sheath for drying after garlic harvesting in the field. The garlic cultivar ‘Namdo’ Southern ecotype in Muan region was harvested on May 25, May 30 and June 13. Water content and carbohydrate of garlic plants were observed at harvest date (May 30), and leaf sheaths were clipping 1, 2, 4, 7, 10, 16 days after harvest. Water content of clipping leaf sheath at harvest time slightly decreased from 79.3 to 65.8% according to drying days. While water content of the non-clipping leaf sheath greatly decreased according to 4, 7, 10 and 16 days drying as 76.5, 68.9, 60.9 and 50.1%, respectively. But water content of bulb was simultaneously decreased with drying periods. Total free sugar content of non-clipping leaf sheath was decreased to 0.28 mgg-1 at 7 days after harvested compared with 0.57 mgg-1 at harvest. On the other hand, the fructosan content of non-clipping bulb was from 0.93 mgg-1 at harvest and increased to 1.31 mgg-1 10 days after harvest. But fructosan of leaf sheath was not affected by drying time. Harvesting on May 25, the ratio of large bulb diameter (above 45 mm) and yield of clipped sheath were 41% and 1,159 kg/10a, respectively, lower than those dried for 9 days as 84.8% and 1,483 kg/10a. On May 30 at harvest, yield of clipped sheath was 1,324 kg/10a, but dried for 3-9 days were 1,613-1,665 kg/10a.
Optimum Physical Condition of Peatmoss-Based Substrate for Growth of Chinese Cabbage (Brassica campestris L. ssp.) Plug Seedlings
Lee, Hyeon-Haeng ; Ha, Sang-Geon ; Kim, Kye-Hun ; Kim, Bo-Hyun ; Seol, Yu-Jeong ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 322~329
This experiment was conducted to investigate optimum physical conditions of peatmoss-based substrates for Chinese cabbage plug seedlings. Peatmoss substrates prepared by mixing peatmoss with vermiculite, perlite, rice hull and zeolite at various mixing ratios were used for growing Chinese cabbage plug seedlings. The physical and chemical properties of the peatmoss substrate were analyzed by the CEN (European committee for standardization) method. Fresh and dry weights (shoot, root), leaf length, leaf width, leaf area, root length, and T/R ratio (dry shoot weight/dry root weight ratio) were determined at 35 days after sowing. The overall results showed that the PVSZ 7 substrate (peatmoss:vermiculite:zeolite=7:2.9:0.1) could be used for production of plug seedlings judging from dry weight and T/R ratio of the plug seedlings. Optimal ranges of physical properties were proposed based on dry matter weight which is the most important assessment criteria of plant growth. Total pore space, water volume, air volume, easily available water content, and water buffering capacity of the peatmoss substrate that showed the best growth of plug seedling were in the range of 92～95%, 51～71%, 21～41%, 14～37%, and 0.6～13%, respectively.
Optimum Physical Condition of Coir-Based Container Substrate for Growth of Chinese Cabbage (Brassica campestris L. ssp.) Plug Seedlings
Lee, Hyeon-Haeng ; Ha, Sang-Geon ; Kim, Gye-Hun ; Park, Eun-Hee ; Yu, Jong-Hee ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 330~337
This experiment was carried out to investigate optimum physical conditions of coir-based substrates for the growth of chinese cabbage plug seedlings. Coir substrates prepared by blending coir with vermiculite, perlite, rice hull and zeolite at various ratios were used for growing chinese cabbage plug seedlings. The physical and chemical properties of the coir substrate were analyzed by the CEN (European committee for standardization) method. Fresh and dry weights, leaf length, leaf width, leaf area, root length and T/R ratio (dry shoot weight to dry root weight ratio) were measured at 35 days after sowing. The CRZ 8 (coir:rice hull:zeolite = 8:1.9:0.1) and CVSZ 5 (coir:vermiculite:zeolite = 5:4:1) substrates showed high potential for production of chinese cabbage plug seedlings considering high plant growth and low T/R ratio. The ranges of total pore space, water volume, air volume, easily available water content, and water buffering capacity of the coir substrate that showed for good growth of plug seedlings were in the range of 88～94%, 51～71%, 21～43%, 12～33%, and 5～11%, respectively.
Total Phenol Content, Electron Donating Ability, and Tyrosinase Inhibition Activity of Pear Cut Branch Extract
Lee, Song-Ju ; Jang, Hong-Ki ; Kim, Chan-Young ; Park, Yong-Seo ; Kim, Tae-Chun ; Park, Dong-Won ; Heo, Buk-Gu ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 338~341
This study was conducted to examine the total phenol content, the electron donating ability, and the tyrosinase inhibition activity of pear cut branch extracts. Extracts were made by heated and distilled water, and 70% ethanol. Total phenol content of that extracted with heated and distilled water was 137 mgL-1, and that with ethanol was 1,900 mgL-1. Electron donating abilities of pear cut branch extracts with synthetic antioxidant at the concentration of 500 and 1,000 mgL-1 were 44.8% and 66.7%. However, those extracts by heated and distilled water, and ethanol at the concentration of 500 mgL-1 were 88.6% and 91.4%, and that at 1,000 mgL-1 were 91.7% and 97.7%. Tyrosinase inhibition activity of pear cut branch extracts treated with 1.0% (w/v) was 92.0%, compared with that epicatechin 9.0%, and kojic acid 89.4%.
Effects of Pruning Time and Defruiting of Satsuma Mandarin Tree with Off-Year Growth on the Flowering and Quality during Next Years
Kim, Yong-Ho ; Ko, Sang-Wook ; No, Il-Rae ; Choi, Yeong-Hun ; Kim, Chang-Myeong ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 342~346
20 years old ‘Okitsu wase’ (Citrus unshiu Marc.) were treated of 1)pruning in autumn, 2)pruning in autumn + partial and all defruiting of secondary scaffold branches on June, 3)pruning in spring, 4)pruning in spring + partial and all defruiting of secondary scaffold branches on June and 5)control. Floral leaf ratio was very high in all treatments in 2000 as expected, but there were no significant difference among the treatments. In 2001, floral leaf ratio was very low in all treatments as expected off year, and there were no significant difference among the treatments. Yield changes rate for the year were 3.1, 9.3, 12.9, 21.0, and 25.2% in pruning in autumn + partial and all defruiting of secondary scaffold branches on June, pruning in spring + partial and all defruiting of secondary scaffold branches on June, pruning in autumn + no defruiting, control and pruning in spring + no defruiting, respectively, resulted very low tendency in order of this treatments. The results indicated that alternate bearing phenomenon could be reduced by pruning and defruiting method. There was a little higher tendency of soluble solid content in spring pruning or defruiting plot of secondary scaffold branches on June compared to other treatments and significant difference among treatments in 2000, but no significant difference among treatments in 2001. Acidity was a little lower in spring pruning+partial and all defruiting on June compared to other treatments in 2000, but there were no significant difference among treatments in 2001.
Soil Chemical Properties and Nutrition Composition of Leaf of 'Fuji'/M.26 Tree in Apple Orchard
Park, Jin-Myeon ; Lee, In-Bok ; Kwon, Jun-Kuk ; Jeong, Hye-Ung ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 347~353
This study was conducted to investigate the nutritional status of apple orchard soils and establish new nutritional criteria in apple leaves for the production of high quality fruit. To achieve the purpose, soils, leaves and fruit samples were collected from 250 ‘Fuji’ apple orchards from 1997 to 2002. Soil chemical properties of apple orchards were compared to the criteria for soil nutrient diagnosis and new elemental foliar tissue levels for production of good apple fruit were recommended as follows: N 23.3～27.6 gkg-1, P 1.2～2.0 gkg-1, K 11.9～16.3 gkg-1, Ca 7.8～12.2 gkg-1, Mg 2.0～3.1 gkg-1, Mn 212～364 mgkg-1, B 26～46 mgkg-1 from late July to early August. Although 89% of ‘Fuji’ apple orchards were less than optimum level in organic matter, above 70% of apple orchards were higher than optimum level of available phosphate and exchangeable potassium contents. Excess or deficiency ratios of apple foliar nutrients were 6.3～38% and 10.6～31.4% according to nutrient species, respectively, comparing to the new criteria for foliar nutritional diagnosis. Most of mineral nutrients of apple leaves had positive correlations with the corresponding soil nutrients, but no correlation between soil phosphate and leaf phosphorus. On the other hand, there are positive correlations between fruit quality factors and some soil chemical properties such as pH, exchangeable calcium and magnesium content, but a negative correlations for available phosphate or organic matter contents. In conclusions, to produce good apple fruit, nitrogen and phosphate fertilizers as well as livestock manure fertilizers for apple trees should be considerably applied as a amount of recommended level on the basis of the results of soil analysis.
Anatomical Feature, Sugar, Carbohydrate, and Hormone Content of Normal and Abnormal Floral Buds in 'Niitaka' Pear Trees
Kim, Jeom-Kuk ; Im, Yeol-Jae ; Seo, Hyeong-Ho ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 354~358
Seasonal changes in hormonal content and organic component along with anatomy of flower bud were examined for their potential relation to flower bud necrosis in ‘Niitaka’ pear trees. There were no visible anatomical differences between abnormal and normal flower buds till July 30, but the affected floral organs began to get browned from late August, and completely browned and necrotized on September 30. On July 30, no apparent differences in carbohydrate content were observed between normal and abnormal flower buds. However carbohydrate content in abnormal flower buds got lower from August 30 and contents of glucose, fructose, and total sugar remarkably lower as well. Cytokinin and abscisic acid in abnormal flower buds were lower. Cytokinin contents in both abnormal and normal flower buds were higher in early stage and then decreased with season. There was no change in abscisic acid content of abnormal buds, while that of normal buds was increased with season. It could be thought that floral bud necrosis occurred from floral differentiation stage but appeared resting and bloom stage.
Fruit Characteristics and Storability of 'Fuyu' Persimmon as Affected by Location of the Orchards and Position within the Tree Canopy
Choi, Seong-Tae ; Gang, Sung-Mo ; Kim, Tae-Chun ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 359~363
This study was conducted to assess the effect of environmental factors on fruit characteristics of ‘Fuyu’ persimmon (Diospyros kaki Thunb.). The fruits were collected from 6 orchards at slop and low lands, respectively, in Changwon and Gimhae districts in Gyeongnam province and additionally harvested inside and outside the tree canopy from 3 slop land orchards. Fruits from slop lands tended to mature earlier than those from low lands. Fruits outside tree canopy were weighed heavier by 20% and colored better than those inside the canopy, but showed significantly lower firmness. Different locations of the orchard and position within the tree canopy did not affect concentration of inorganic elements in fruits except potassium that was significantly higher in those inside the tree canopy. Percent fruit with softening after low temperature storing for 96 days was only 1.1% in fruits inside the tree canopy due to higher firmness, while 6.1% outside the canopy. Fruit size was negatively related to fruit firmness (r＝-0.680*), and percent fruit with softening was related to soluble solids (r＝0.672*), Hunter a (r＝0.675*), and fruit firmness (r＝-0.673*).
Effect of Elevated Cadmium Concentration in Nutrient Solution on Growth and Cadmium Accumulation of Young Pear Tree
Jeon, Byeong-Du ; Choe, Jong-Seung ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 364~369
In order to investigate the effect of application rate of cadmium on tree growth and cadmium accumulation in fruit tree, one year old pear trees were transplanted into plastic container containing sand. Then, pear trees were cultured with nutrient solution containing 1 to 20 mg･L-1 of cadmium. Growth of shoot was severely suppressed by elevated cadmium concentrations. Decrease of dry weight of old roots with thicker than 2 mm in diameter was more severely affected by elevated cadmium concentrations in nutrient solution than those of other parts of pear trees. Elevated cadmium concentrations in nutrient solution resulted in increase of tissue contents and the highest concentration was observed in young roots followed by old roots, barks, woods, and leaves. The cadmium contents in young roots were much higher than those of other parts of pear trees. Cadmium detected in young roots was 53～82% of total amounts accumulated in pear trees. Uniform chlorosis in newly developed leaves and defoliation, localized necrosis in bark and necrosis in buds were observed in treatments of elevated cadmium concentrations.
Production of Seedless 'Maekawa-Jiro' Persimmon by Blocking the Pollinators
Choi, Seong-Tae ; Kang, Seong-Mo ; Kim, Tae-Chun ; Park, Du-Sang ; Kim, Jeong-Bu ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 370~375
Insect-proof nets were installed before flowering on some 3- to 4-year-old branches of ‘Maekawa-Jiro’ persimmon (Diospyros kaki Thunb.) in 2003 or on whole trees in 2004 and 2005. Percent fruit set did not differ significantly between the open-pollinated trees and pollinator-blocked. All the fruits were seedless when pollination was blocked, while those on open-pollinated branches or trees had an average of 2.5, 0.7, and 2.0 seeds, respectively, in 2003, 2004, and 2005. Although seedless fruits weighed a little less than seeded fruits in 2003, there were no consistent differences in fruit size and soluble solids in 2004 and 2005 regardless of the fruits being seeded or seedless. Fruit firmness tended to be higher in the blocked trees for three years but their skin color was lower in 2004 and 2005. Fruit shape index was lower in the blocked trees only in 2003. Fruit concentrations of inorganic elements at harvest and fruit characteristics after a two-month storage at -0.5℃ were similar between the two treatments in 2005. The pollinator-blocking treatment, in general, did not affect concentrations of non-structural carbohydrates and inorganic elements in leaf and shoot in 2005. However, starch in shoot and K in both leaf and shoot were significantly lower in the pollinator-blocked trees. It was concluded that high-quality seedless fruits of ‘Maekawa-Jiro’ persimmon could easily be produced by keeping the flowers from being pollinated on a whole tree basis.
Responses of 'Fuyu' Persimmon Tree to Renovating Modified-leader to Open-center and Y Forms
Choi, Seong-Tae ; Park, Yun-Moon ; Kang, Seong-Mo ; Kim, Hak-Kyu ; Kim, Seong-Chul ; Choi, Tae-Min ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 376~381
‘Fuyu’ persimmon trees had been grown for eight years in a modified-leader (ML) form with five scaffolds. In spring of 2003, they were heavily pruned for tree form renovation to an open-center (OC) having three scaffolds or a Y form having two. Tree growth and the fruit production were then monitored for three years. Tree forms significantly affected neither the growth of trunk, tree height, and terminal shoots nor pruning weight. However, renovating from an ML to an OC or a Y significantly decreased the number of shoots per tree. The renovating to Y form tended to stimulate more water sprouts but with an inconsistent year-to-year variation. Per-tree yield and yield efficiency were higher in ML and OC trees, respectively. Fruit set, fruit color, and soluble solids of fruits were not consistently changed during the three years depending on tree forms, while average fruit weight tended to be higher in OC trees. Data suggested that tree density be considered together when renovated to OC or Y form, and that the renovated trees be cared for tree vigor and fruiting.
Effects of Mulching Material and Planting Method on Bulb Growth in Microtuber of Zantedeschia spp
Yu, Yong-Kwon ; Kim, Byeong-Woon ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 382~387
This study was carried out to investigate the effect of mulching material and planting method on bulb growth in microtuber of calla (Zantedeschia spp.), and then to establish the bulb production system for cut flower using the microtuber. Bulb growth such as bulb weight, circumference, diameter, and height was better in black polyethylene (PE) film mulching than in none and transparent PE film mulching in microtuber of three Zantedeschia spp. cultivars. The microtuber planted in April 25 than in May or June 25 showed the better bulb growth. When the microtuber was planted at a spacing of 10×10 cm, bulb size was small. Planting at a spacing of 20×20 cm or 30×30 cm was effective in the bulb growth of two cultivars. Bulb growth of microtuber planted in 0 or 1.5 cm deep was decreased, but the microtuber planted in 3 cm deep showed the good bulb growth in bulb weight, circumference, diameter, and height.
Breeding of a New Rose Cultivar 'Hanmaeum' with Red-White Color Flower and Resistance to the Powdery Mildew
Ki, Kwang-Yeon ; Kim, Jeong-Geun ; Han, Tae-Ho ; Choi, Gyeong-Ju ; Na, Taek-Sang ; Jo, Myeong-Su ; Lee, Ya-Seong ; Lee, Jae-Sin ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 388~391
A rose cultivar ‘Hanmaeum’ developed at the Jeollanamdo Agricultural Research and Extention Services is a standard type with red-white flower. From 1998, two cultivars ‘Nicole’ and ‘Tiamo’ were examined for horticultural characteristics and were included in cross-combination in 2000. Cultivar ‘Nicole’, a vigorous and strong fragrant standard type with red-white flower, was used as a mother plant and cultivar ‘Tiamo’, a red-flower standard type with high productivity, was used as a pollen-donor plant. Forty two breeding lines were selected in 2001 based on flower shape, flower color and abundance of petal numbers on the first selection. Four breeding lines were selected in 2002 based on powdery mildew and vigor on the second selection. For two years, from 2003 till 2004, two breeding lines were selected and examined for their productivity, and then cultivar ‘Hanmaeum’ was developed because of distinctive characters such as red-white color flower, upright stem, long flower stem, long vase-life and powdery mildew resistance. A standard type with middle sized flower, cultivar ‘Hanmaeum’ shows in average 9.3 cm flower diameter, 74.1 cm flower stem length, and 11.8 days vase-life. The average productivity for two years was 107 stemsm-2 per year and increased 25.1% compare to cultivar ‘Nicole’ with 85.6 stemsm-2 per year.
Effect of Several Culture Conditions on Growth of Carnation Propagules
Lee, Hyun-Suk ; Kim, Chang-Kil ; Jeong, Jae-Dong ; Kim, So-Yeong ; Jeong, Mi-Yeong ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 392~397
The effect of different in vitro culture conditions, such as heterotrophic, mixotrophic and photoautotrophic conditions, on the growth of carnation propagules were investigated. Height, number of nodes, fresh weight and dry weight were higher in photoautotrophic condition than in the heterotrophic or mixotrophic condition. Microstructure of abaxial leaf surface of propagules grown in different culture conditions were observed. Wax layer was observed in the propagule leaves grown in the greenhouse, and under photoautotrophic and mixotrophic conditions. However, it was not observed in propagule leaves grown under a heterotrophic condition. Shape and size of stomata in propagule leaves grown under photoautotrophic condition were similar to those of leaves grown in the greenhouse. Under a photoautotrophic condition, application of uniconazole as a spray (0.5 mgL-1) gave the best propagule growth. Survival ratio of propagules after ex vitro transplanting was higher in photoautotrophic propagules than in the heterotrophic and mixotrophic ones. Furthermore, height, number fo leaves, stem diameter and chlorophyll content were also increased in photoautotrophic propagules.
Growth Responses of Calla Lily 'Black Magic' according to Storage Temperature and Duration of Tuber
Choi, So-Ra ; Park, No-Bok ; Kim, Myeong-Jun ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 398~403
The main objectives of this study was to determine the storage temperature and duration for breaking dormancy of calla lily ‘Black Magic’ tubers that hardened at 15 ± 4℃ for 4 weeks. The shoot growth from the tubers was initiated after 4 weeks at 18℃ or 2 weeks at 24℃, and flower initiation was not observed in any storage condition. The days to shoot emergence and flowering were shortened by storage temperature and duration increased. The number of flowers was increased when tubers were planted just after shoot elongation. However, the number of flowers was significantly reduced when tubers were still maintained in the storage period after shoot elongation. The best condition for storage was at 8℃ for 12 weeks, showing little change on the number of flowers. But other growth and flowering responses were little influenced by the storage temperature and duration.
Dyeing of Sphagnum Moss for the Flower Design with the Extract of Marigold
Park, Yun-Jeom ; Kim, Hyeon-Ju ; Oh, Dae-Min ; Yu, Yong-Kwon ; Jo, Ja-Yong ; Bae, Jong-Hyang ; Heo, Buk-Gu ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 404~410
This study was conducted to clarify the effects of dyeing conditions on the dyeability of the discolored sphagnum moss which was dyed with 1% extract of marigold at 100℃ for sixty minutes. The hue of dyed sphagnum moss was generally shown an Y and YR levels. In the higher concentration of extracting solution, E values of sphagnum moss was increased, however, those V and L* values were decreased. Regardless of dyeing temperatures, colors of sphagnum moss non-mordanted and dyed was YR level, those treated AIK, NaOH and Fe with mordants were all Y level. And E values was significantly increased in the higher dyeing temperatures. In the longer dyeing times, V and L* and b* values were decreased, and E values was increased. However, those H, C and a* values were not significant among treatments. In general, dyeability of sphagnum moss dyed with the different pH ranges had not a uncertain tendency.
Characteristics of Blue Pigment of Common Gardenia and Dyeing the Flower of Lilium longiflorum and Gypsophila paniculata with These Pigment
Baek, Jin-Ju ; Jo, Ja-Yong ; Yu, Yong-Kwon ; Park, Yun-Jeom ; Jang, Hong-Ki ; Heo, Buk-Gu ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 411~416
This study was conducted to examine the characteristics of blue pigment bioconversed from the yellow pigment of common gardenia (Gardenia jasminoides for. grandiflora), and its dyeing with Lilium longiflorum cv. Georgia and Gypsophila paniculata. cv. Bristol Fairy. Hunter b* value, pH, and color value for the yellow pigment of Gardenia jasminoides as affected by the incubation of Streptococcus mutans for seventy two hours were below 1, 5.5, and 10.9. Maximum absorbance of that at 588 nm was obtained immediately after the incubation of strains. And it was also confirmed that yellow pigment was bioconversed into blue pigment. Petals of trumpet lily and baby’s breath were completely dyed blue when those were immersed in 1.0% diluted solution for forty eight hours, and 2.0% and 4.0% for twenty four hours dipping in the solution of common gardenia blue pigment. Vase life of trumpet lily immersed in 4.0% diluted solution of common gardenia blue pigment for twenty four hours was only shortened by one to two days.
The Effect of Flower Scent and Essential Oils on Reduction of Concentration of Cortisol, a Stress Hormone
Kim, Kwang-Jin ; Jeong, Sun-Jin ; Na, Ki-Jeong ; Jeong, Ui-Bae ; Kil, Mi-Jeong ; Kim, Hyeong-Deuk ; Song, Jeong-Seop ; Yu, Eun-Ha ; Jo, Jeong-Geon ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 417~424
When the ICR mouse stimulated by electrical pulses was exposed to scent of various cut flowers and essential oils, concentration of a serum cortisol was determined. The flower scent of Lilium longiflorum, Aerides japonicum and the flower absolute of rose, and jasmine decreased the cortisol concentration of ICR mouse. However, the flower scent of Lilium Oriental Hybrids, and the aromatic oils of lavender and rosemary increased it. As the number of flowers added to a box was increased, the serum cortisol concentration of ICR mouse in a box decreased in L. longiflorum. However, it increased with ten flowers of L. Oriental Hybrids. When grade-schooler took a mathematics test, the saliva cortisol concentration of students in the classroom with L. longiflorum ‘Gelria’ flowers was slightly lower than that without flowers. As a result, the flower scent of L. longiflorum ‘Gelria’ and A. japonicum were demonstrated to release a human stress.
Comparison of the European Standard Methods and the Rural Development Administration Methods for Determining Chemical Properties of Horticultural Substrates
Lee, Hyeon-Haeng ; Kim, Kye-Hun ;
Korean Journal of Horticultural Science and Technology, volume 24, issue 3, 2006, Pages 425~430
This study was carried out to compare chemical properties of the horticultural substrates measured by the European standard methods (European Committee for Standardization, CEN methods) and the Rural Development Administration of Korea methods (RDA methods). Fifty horticultural substrates including 40 marketed substrates and 10 organic and inorganic raw materials such as peat moss, coir dust, rice hull, perlite and zeolite were sampled. The samples were then analyzed for 8 chemical properties by both CEN methods and RDA methods. The results of both methods were analyzed by linear regression. pH (R2＝0.9405), EC (R2＝0.7128) and phosphorus (R2＝0.8476) values measured by the two methods were highly significant. Compared to pH, EC, and phosphorus concentration the significance for Na and Ca concentration were lower. Whereas those for NH4-N (R2＝0.0274), K (R2＝0.1228) and Mg (R2＝0.1338) were not significant. Further research is needed to facilitate the conversion between the two methods.