Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Horticultural Science and Technology
Journal Basic Information
Journal DOI :
Korean Society of Horticultural Science
Editor in Chief :
Volume & Issues
Selecting the target year
Self- and Cross-compatibility of Some Apricot Cultivars (Prunus armeniaca L.)
Chung, Kyeong-Ho ; Jun, Ji-Hae ; Jeong, Sang-Bouk ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 261~265
Self- and cross-compatibility, and the pollen-related characteristics of 18 apricot cultivars were evaluated at National Horticultural Research Institute, Suwon for three blooming seasons from 2000 to 2002. Although the number of normal pollen grains per flower ranged from 5.75×10^4 in ‘Choha’ to 8.37×10^3 in ‘Heiwa’, the numbers did not show any clear differences according to ecological group of apricot. Abnormal pollen grains per flower ranging from 2.30×10^4 in ‘Goldrich’ to 2.70×10^2 in ‘Goldcot’ were frequently observed in all cultivars. The percentage of pollen germination was high in ‘Goldcot’, ‘Royal’, ‘Tirynthos’, ‘World Peach’ more than 10%, while low in ‘NY 458’ and ‘Yamagata No. 3’ less than 1%. Many cultivars excepting ‘Choha’, ‘Early Orange’, ‘Hiroshimaoomi’, ‘Ivonne Liverani’, ‘Royal’, and ‘Tirynthos’ showed low self-compatibility, less than 5% in the percentage of fruit set. Therefore, co-planting with pollinizer cultivars was recommended for the stable fruit set. Seven major or promising cultivars under Korean climatic condition showed enough cross-compatibility with 9 cultivars, over than 20% as the percentage of fruit set. However, low percentage of fruit set in the combination ‘Choha’×‘Chinese’, ‘Harcot’×‘Chinese’ was observed and therefore the further evaluation will be required.
Growth and Fruit Yield of Strawberry Grown in Raised Bed Culture Using Growing Media with Lower Cost
Yoon, Hae-Suk ; Hwang, Yeon-Hyeon ; An, Chul-Keon ; Hwang, Hae-Jun ; Rho, Chi-Woong ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 266~269
Strawberry ‘Akihime’ was cultured in raised hydroponic beds which were composed of three kinds of mixed media : 1) peatmoss＋perlite＋granular rockwool (PPG, 1:1:1, v/v); 2) peatmoss＋perlite＋expanded rice hull (PPE, 1:1:1, v/v) and 3) peatmoss＋perlite＋synthetic fibers (PPS, 1:1:1, v/v). The plant growth, fruit yield and medium expenses were investigated. The changes of pH and EC in the draining solution of all media were within the acceptable range for plant growth. The plant height and leaf size were not different among the media. Marketable yield per plant was 617g in the PPG and 601g in the PPE, which were higher than that in the PPS. The cost in the PPE and the PPS were 263 and 250 won per plant, respectively, and these were equivalent to 78% and 74% of the PPG.
Growth Characteristics and Analysis of Phylogenetic Relationship of Allium monanthum and Allium grayi
Riu, Il ; Kim, Chang-Kil ; Kim, Kyung-Min ; Oh, Joung-Youl ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 270~277
The major growth characteristics of local strains of Allium monanthum and A. grayi collected in Korea were investigated to obtain the basic information for varietal improvement and cultural practices. There was no difference in days to sprouting among the local strains of A. monanthum. However, the local strains of A. grayi could be classified three groups depend on days to sprouting. There was no difference in days to sprouting of A. grayi as 7 days between in the open field and in shading culture. However, the days to sprouting of A. monanthum at the field was less longer than those at the shading culture. The growth of A. grayi and A. monanthum in the shading culture much better than those in the field but the bulblet production ability was similar. The local strains of A. grayi were distinguished from A. monanthum by the growth characteristics such as bolting, plant height, and leaf width. Among the local strains of A. grayi, there was difference in the number of tillers. Also, among the local strains of A. monanthum, there were difference in plant height, number of tillers, and length of flower stalk. In bulblet production ability of A. grayi and A. monanthum, the bulblet weight and amount of A. monanthum was more heavier than those of A. grayi. Random amplified polymorphic DNAs (RAPDs) were identified in A. monanthum and A. grayi by amplification using 10-mer primers of arbitrary sequence. Cluster analysis for genetic similarity revealed the fairly high variation with between A. monanthum and A. grayi.
Growth and Yield Response between Direct Seeding and Transplanting in Summer Cultivation of Spinach in Alpine Area
Yeoung, Young-Rog ; Jung, Mun-Kyo ; Lee, Mi-Rim ; Hong, Sae-Jin ; Chun, Chang-Hoo ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 278~282
This study was carried out to investigate differences between cultivars and effects of transplanting on the growth and yield of summer spinach (Spinacia oleracea L.) and to provide practical production technology in the summer season to local farmers in alpine area. Growth rates of ‘Kwangchae’ and ‘Samson’ cultivars improved as the growth stage increased. Numbers of leaves did not differ between cultivars at 30 days after transplanting. High economic efficiency was observed in transplanting cultivation, compared to direct seeding, in terms of growth rate, yield and quality. As a result, we strongly recommend introducing transplanting cultivation technology with four selected cultivars to help local farmers in alpine area to produce summer spinach with enhanced quality and increased income.
Selection of Cultivars and Growth Response to Planting Distance for Summer Spinach in Alpine Area
Yeoung, Young-Rog ; Jung, Mun-Kyo ; Jeon, Gi-Young ; Kim, Byung-Sup ; Hong, Sae-Jin ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 283~287
This study was carried out to investigate effects of cultivars and to provide the practical production method of spinach (Spinacia oleracea L.) in the summer season for the local farmers of alpine areas. Considering the rate of germination, bolting and resistance to hot temperature, four cultivars ‘Bio’, ‘Kwangchae’, ‘King of Summer’, and ‘Samson’ were selected among the 12 cultivars tested. Seed germination was more than 95% in both cultivars of ‘Platon’ and ‘Samson’. There were not bolted plants from ‘Kwangchae’, ‘King of Summer’, ‘Platon’ and ‘Samson’. Cultivars ‘Bio’, ‘Kwangchae’, and ‘Samson’ showed high resistance to summer climate in alpine areas. The increase of leaf width and number of leaves was typically associated with increasing transplanting distance from 7×7cm to 20×20cm. For example, the fresh weight measured at 30 days after transplanting with 20×20cm distance was two times heavier than the fresh weight at transplanting with 7×7cm distance. However, the 10×10cm transplanting distance was the most effective, considering economic efficiency and spinach quality.
Changes in Quality Attributes during PE Film Storage of Summer Spinach 'Kwangchae' Grown in Alpine Area
Lee, Mi-Rim ; Yeoung, Young-Rog ; Kim, Byung-Sup ; Hong, Sae-Jin ; Choi, Kyong-Ju ; Seo, Jong-Bun ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 288~293
This study was carried out to evaluate effects of storage temperature and polyethylene (PE) film packaging on quality changes of summer spinach cv. Kwangchae and to find optimum storage conditions after harvest. Fresh weight (FW) of spinach stored at room temperature decreased by approximately 56% after 3 days, while those stored at 4
C decreased by 20% after 7 days. Fresh weight of spinach packaged in PE film and stored at room temperature decreased by 2.5% after 3 days, while at 4
C with PE film packaging only 1.5% fresh weight loss observed. Among soluble sugars at harvest, sucrose was the highest (4.9mg․g^-^1 FW) while glucose and fructose were 1.9mg․g^-^1 FW and 1.7mg․g^-^1 FW, respectively. These soluble sugars decreased rapidly during storage. After three days of storage at 4
C, sucrose content was 3.0mg․g^-^1 FW in 0.03mm PE film packaging and 4.0-4.5mg․g^-^1 in 0.05mm PE film packaging, which was higher compared to control. Ascorbic acid content at harvest was 166μg․g^^1 FW and decreased to 20μg^-^1 FW after 3 days. These patterns were more apparent at room temperature storage without PE film pakaging. PE film (0.03mm) packaging retained the initial ascorbic acid content at harvest. Chlorophyll content at harvest was 400
g^-^1 FW and slowly decreased as the storage period extended. PE film (0.05mm) packaging prevented chlorophyll content from declining during storage. The shelf life for non-packaged summer spinach at room temperature was determined to be not more than 3 days, while the quality of spinach was maintained packaged with 0.03mm PE film for 3 days. On the other hand, the shelf life of summer spinach stored at 4
C with 0.03mm and 0.05mm PE film packaging was about 7 days. But the storage term was exceeded seven days the spinach stored in 0.05mm PE film at 4
C showed water-soak and wilting, and finally was lost marketibility. In order to maintain quality of summer spinach after harvest, low temperature (4
C) storage combined with 0.05mm and especially 0.03mm PE film packaging is strongly recommended.
Significance and Detection of Latent Infection of Colletotrichum gloeosporioides on Strawberry
Nam, Myeong-Hyeon ; Lee, In-Ha ; Gwon, Gyeong-Hak ; Kim, Hong-Gi ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 294~297
To investigate the primary inoculum for latent infection on strawberry (Fragaria×ananassa Duch.), healthy plants (HP) derived from tissue culture and symptomless local farm plants (LFP) were grown in a strawberry nursery field in Nonsan Strawberry Experiment Station and local farms from 2001 to 2002. Among HP, occurrence of anthracnose was firstly detected in 2.2% of daughter plants on July 10th (98 days after planting). Meanwhile, among LFP, 10% of mother plants were wilted on June 10th (68 days after planting). In local farms, anthracnose did not occur in the nursery field where HPs were planted, but anthracnose incidence in LFP were detected from 5 to 60%, based on the survey in Aug. 2001 and Sept. 2002. To detect rapidly latent infection of Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. on strawberry, 5 min ultraviolet light (UV) radiation, water rinse, 30 sec herbicide paraquat (2.5mL․L^^1) treatment, and 30 sec 70% ethanol treatment were tested, respectively. Acervulus formation of C. gloeosporioides was observed on petioles treated with either UV, water, paraquat, or ethanol. However, acervulus formation were not detected in non-treatment samples. Paraquat treatment was faster than other treatments for developing acervulus of C. gloeosporioides. Rapid and accurate detection of latent infection on strawberry anthracnose should be possible effectively by paraquat treatment on petioles.
Effect of Methyl Jasmonate and Elevated Carbon Dioxide on Postharvest Chilling Susceptibility and Quality in Cucumber (Cucumis sativus L.)
Lee, Kyung-A ; Yang, Yong-Joon ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 298~304
The experiment was conducted to find out the role of methyl jasmonate and elevated carbon dioxide on postharvest chilling susceptibility and the effective treatment on inhibition of chilling injury (CI) and preservation of quality in cucumber (Cucumis sativus. L. cv. Chuycheong). CI symptoms started developing in pericarp from the 4-5th days of storage at 4
C, CI was intensified after cucumber were transferred to room temperature. CI was inhibited by 0.01mM methyl jasmonate and 5% CO_2 treatments during storage or after being transferred to room temperature. Cucumber stored at 12
C and 20
C showed accelerated senescence and wilting although any CI symptoms were not appeared. Respiration rate and ethylene production in cucumber stored at 4
C increased significantly after fruits were transferred to room temperature, they were lower in cucumber stored at 4
C than 12
C or 20
C. There was no remarkable increase of gas production in cucumber stored at 12
C or 20
C after being transferred to room temperature. But weight loss was higher in cucumber stored at 12
C or 20
C than 4
C, pericarp wilting and stem drying caused serious loss of market quality. Gas production and weight loss were inhibited by 0.01mM methyl jasmonate and 5% CO_2 treatment at 4
C during storage or after cucumber were transferred to room temperature. These treatments were also effective on maintenance of firmness and color, therefore they were considered as positive treatments for inhibition of CI and preservation of quality in future.
Changes in Elasticity, Firmness, Vitamin C, and Carbohydrate during Controlled Atmosphere Storage of Sweet Pepper Fruit
Yang, Yong-Joon ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 305~309
The effects of controlled atmosphere storage on the changes in elasticity, firmness, vitamin C, and carbohydrate of sweet pepper fruit were investigated. The elasticity difference among pepper cultivars was so highly found at harvest showing that 28.8N/4.8mm was in green cultivar ‘Sitia’, 23.5N/4.8mm in red cultivar ‘Mazorca’ and 11.6N/4.8mm in yellow cultivar ‘Hybride HRF. F1’, respectively. Both treatment of standard CA and low oxygen CA significantly kept fruit elasticity values significantly better than other treatments during cold storage. However, firmness was not affected significantly by cultivars tested and storage duration. Fruit stored in low temperature, standard CA and low oxygen CA were comparatively firmer than those stored in other storage conditions. Elasticity of fruit tissue could be used as a good indicator for the estimation of sweet pepper freshness. Vitamin C contents at harvest were quite different from sweet pepper cultivars representing ‘Mazorca’ 112.4mg/100g FW, ‘Sitia’ 86.7 mg/100g FW and ‘Hybride HRF. F1’ 54.7mg/100g FW, respectively. Vitamin C increased at 2 weeks after cold storage than the initial value at harvest and thereafter decreased sharply. Low oxygen CA significantly maintained vitamin C levels at 28 days after storage while high carbon dioxide CA fastly distrupted the initial levels. Glucose and fructose were main carbohydrate contents of green pepper fruit showing a little amount of sucrose and starch. Glucose and fructose contents increased at 28 days after cold storage (10
C), while sucrose and starch decreased sharply.
Seasonal and Daily Patterns of Xylem Sap Transportation in 'Fuji'/M.9 Apple Trees
Park, Jeong-Gwan ; Kim, Seon-Kyu ; Lee, Jae-Young ; Kim, Seong-Hee ; Sin, Yong-Eok ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 310~314
This trial was conducted to find out the amount and velocity of xylem sap during growing season in four-year-old 'Fuji'/M.9 apple trees. The total amount and average velocity of xylem sap from April 4 to October 20 were 566.5 L․tree^-^1 and 12.9 cm․hr^-^1․tree^-^1, respectively. Xylem sap increased from April, peaked in May and again in August, then decreased to the same level as April. Weather conditions affected xylem sap transport because the transport showed similar tendency with vapor pressure deficit (VPD) value from mid June to late September. As comparing the relationship between xylem sap transport in a day and weather conditions according to growing stage or time, the xylem sap transport of early or later stage was more affected by the degree of tree growth than weather conditions. However, it could be thought that the transport from June to August was chiefly affected by weather conditions.
Inheritance and RAPD Marker Selection Linked to Resistance Trait of Alternaria Blotch (A. mali) in Apples
Kim, Dae-Il ; Hwang, Jeong-Hwan ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 315~320
To clarify inheritance mode and to develop molecular markers linked to the resistance trait of Alternaria blotch (A. mali) in apple, the 100 seedlings were evaluated and genetically analyzed from the F_1 progeny population between resistant ‘Tsugaru’ and susceptible ‘Gamhong’. The results of the field evaluation showed 1:1 segregation between resistant and susceptible seedlings confirming that the resistance of Alternaria blotch is controlled by single recessive gene. Inoculation using 4× diluted culture filtrate was useful for screening of resistance because the 4× dilution only fitted an expecting 1:1 segregation ratio among four different dilution ratios of culture filtrate. More seedlings of resistance were segregated by culture filtrate inoculation originated with two kinds of A. mali than those by field evaluation which result proposed the influence of major gene(s) to the Alternaria blotch resistance in apples. As a result of bulked segregant analysis (BSA) using 567 random primers, 27 random amplified polymorphic DNA (RAPD) markers were preliminarily selected using two parents and two DNA bulks and three RAPD markers linked to the Alternaria blotch resistance trait, OPV03-1390, OPU06-1270, and WK07-1580, were finally selected. The results suggest that the selected markers could be used for the resistant apple breeding to increase selection efficiency.
Genetic Characterization Using the Isozyme Analysis in the Genus Prunus
Kim, Dae-Il ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 321~327
Isozyme markers were analyzed to characterize genetic relationships among the 43 stone fruit taxa in genus Prunus. Five isozymes were showed 48 polymorphisms depending on their band patterns, four of aspartate aminotransferase (AAT), five of alcohol dehydrogenase (ADH), seven of 6-phosphogluconate dehydrogenase (6-PGD), fifteen of glucose phosphate isomerase (GPI), and seventeen of malate dehydrogenase (MDH) each. GPI was very informative to identify and analyze taxa in P. salicina and in subgenus Cerasus with three and six polymorphic zymotypes. MDH was showed six polymorphisms within subgenus Amygdalus. Zymotype A of MDH was classified to ‘Baekmijosaeing’, ‘Sunagowase’, ‘Simizuhakuto’, ‘Hwangdo #1’, ‘Okubo’, and three wild peaches. Zymotype B, C, and D could identify each ‘Kurakatawase’, ‘Yumyeong’, and ‘Chinese Cling’. Zymotype E was presented in nectarines which ‘Okitsu’ and ‘Shuho’, and type F was on ‘EarliBlaze’ and ‘Vivian’. As a result of cluster analysis using isozyme band polymorphisms, subgenera were firstly divided into larger groups that the Amygdalus was differentiated over the Manhattan distance 150, however the Prunophora and the Cerasus were classified ambiguously at Manhattan distance 112.37. The 43 taxa in genus Prunus could be classified to specific or subspecific eight groups at the Manhattan distance 42.59. Subgenus Amygdalus was placed in group I and II. Three taxa of P. tomentosa were characterized in group III beside group IV included pure mumes. Group V was characterized by apricots including hybrid apricots and mumes. Group VI was consisted of European and Asian plums which were divided in each sub-group. Subgenus Cerasus was divided in group 7 and 8 including small sized fruiting cherries. Polymorphisms of GPI and MDH might be influenced the classification of these groups.
Elimination of Lily Symptomless Virus through Shoot Apex Culture in Lilium Oriental Hybrids
woo, Jin-Ha ; Nam, Hyo-Hoon ; Choi, Kyeong-Bae ; Park, In-Sook ; Kim, Kiu-Weon ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 328~332
This study was conducted to eliminate the lily symptomless virus (LSV) from LSV-infected Lilium Oriental Hybrids ‘Casa Blanca’ and ‘Marco Polo’ by shoot apex culture. Filamentous virus of 650nm and spherical virus of 30nm were detected in leaves of virus-infected plants of ‘Casa Blanca’ with DN method. The particles of filamentous and spherical viruses were sporadically distributed in cytoplasm of leaf cell. The filamentous virus was estimated by LSV with ISEM. Virus-infected plants of ‘Casa Blanca’ were presumed to be in the state of complex infection of LSV and other viruses. More number of leaf primordia attached to shoot apical meristem, larger size of shoot apex explant resulted in the promotion of the survival rate and enlargement of bulblets. The result of virus detection for plantlets taken from in vitro culture and after-generation in vitro by DTBIA method shows that LSV was eliminated completely from ‘Casa Blanca’ solely with cultured shoot apical meristem and ‘Marco Polo’ with one leaf primodium attached to shoot apcial meristem. From above result, LSV is considered not to exist in shoot apical meristem of Lilium Oriental Hybrids ‘Casa Blanca’ and ‘Marco Polo’.
Effect of Plant Growth Retardants on Spike Length in Planting Time of Dendranthema grandiflorum 'Baegkwang'
Kim, Ju-Hyoung ; Paek, Kee-Yoeup ; Kim, Hag-Hyun ; Lee, Hee-Doo ; Lee, Jong-Won ; Kim, Si-Dong ; Yun, Tae ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 333~338
Growth retardants were treated to reduce spike length of cut Dendranthema according to planting time. In the planting time of February 28, higher concentrations of daminozide and CCC significantly reduced spike length. In the planting time of May 30 and August 30, on the other hand, daminozide decreased plant height, flower diameter, stem diameter as well as spike length. CCC was also effective but not as much as daminozide. Overall, daminozide was most effective in spike length reduction followed by CCC, uniconazol, and ethephon.
Effect of Potassium Concentrations in Fertilizer Solution on Growth of and Nutrient Uptake by Oriental Hybrid Lily 'Casa Blanca'
Choi, Jong-Myung ; Lee, Ki-Hwan ; Yeon, Byeong-Yeol ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 339~345
This research was conducted to investigate the effect of K concentrations in fertilizer solution on growth of and nutrient uptake by Oriental hybrid lily ‘Casa Blanca’. Tissue and soil analysis were also conducted to estimate nutritive condition on inorganic elements resulting in decreased crop growth. Dry weight of cut flowers increased as K concentrations in fertilizer solutions were elevated in the range from 0 to 25mM. Treatment of 25mM K produced the greatest dry weight among treatments tested, while greater than 25mM K depressed dry mass production. Elevated K concentrations in fertilizer solution from 0 to 25mM increased height, fresh weight, stem diameter and stem strength of cut flowers. Tissue K contents of the 15, 20 and 25mM K treatments were 3.18, 3.82 and 3.81%, respectively, and maintaining higher than 3.5% tissue K content was necessary to produce quality cut flowers. Treatment of 25mM K had soil K concentration of 142.9mg․L^-^1 at the bud emergence stage and 218.7mg․L^-^1 at the harvesting stage. Therefore, maintaining greater than 140mg․L^-^1 K in soil is necessary to produce quality cut flowers and acceptable range was 140 to 250mg․L^-^1 K in soil solution.
Effects of Shading on Growth and Cut Flower Quality of Spray hrysanthemum 'Relance'
Kim, Hyun-Seok ; Kwon, Min-Kyung ; Han, Youn-Yul ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 346~350
This experiment was carried out to investigate the effect of shading level (0, 30, 50%) and shading time (planting～harvesting, planting～budding, budding～harvesting) on growth and cut flower quality of spray chrysanthemum (Dendranthema grandiflorum cv. Relance). Plant height was low by shading but it was not significantly influenced by shading level. Stem diameter was thin in high shading level and shading did not significantly influenced on the number of branches, leaves, and flowers, and peduncle length, and weight of cut flower, compared with non-shading. Shading from budding to harvesting increased the number of branches and flowers and weight of cut flower. Chromaticity a
value was higher in shading than non-shading. Shading from budding to harvesting showed higher chromaticity a
value than shading from planting to budding, but there was no difference between the treatment of shading from budding to harvesting and shading from planting to harvesting.
Damage and Control of Bradysia agrestis Sasakawa (Diptera: Sciaridae) in Herbaceous Flowering Plants
Kim, Hyeong-Hwan ; Jeon, Heung-Yong ; Cho, Myoung-Rae ; Yang, Chang-Yeol ; Choo, Ho-Yul ; Lee, Heung-Su ; Rhee, Hye-Kyung ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 351~357
Survey was conducted on the damage of Bradysia agrestis in greenhouse of herbaceous flowering plants and control effects were compared among 4 insecticides and a entomopathogenic nematode. The population density of B. agrestis larvae ranged 0.0～2.4/cm^3 in the herbaceous flowering plants. The damage rate was highest in dianthus (44.6%) followed by flowering tomato (27.4%), primula (26.6%), and petunia (25.2%) among the 22 plants surveyed. In lily, oriental hybrid varieties showed various damage rates from 0% in ‘Ascari’ to 51.4% in ‘Tiber’, and asiatic hybrid varieties also showed different damages rates from 0% in ‘Adelina’ to 65.7% in ‘Chopin’. The insectcides of acephate, furathiocarb and imidacloprid showed control effects of 91.7%, 96.8% and 98.5%, on B. agrestis larva, respectively, in cyclamen at 7 days after treatment. The entomopathogenic nematode, Steinernema carpocapsae Pocheon strain showed control effect of 80.5% at 7 days after treatment and the control efficacy persisted for 14 days after treatments. Growth of cyclamen was not affected by neither the insecticides nor the entomopathogenic nematode.
Breeding of a New Bright Pink Gerbera 'Sunnyeo' with High Yielding for Cut Flower
Chung, Yong-Mo ; Chung, Young-Soo ; Lee, Young-Byung ; Kim, Jeong-Bu ; Kwon, Oh-Chang ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 358~360
A new bright pink gerbera (Gerbera hybrida Hort.) cultivar ‘Sunnyeo’ was developed from a cross ‘Rosula’ and ‘Ansofie’ followed by seedling and line selections at the Flower Breeding Research Institute, Gyeongnam Agricultural Research and Extension Services (ARES) in 1999. Characteristics trials were conducted three times from 2001 to 2002. Newly bred ‘Sunnyeo’ showed pink color (RHS 48-D), brown center, single type, and large flower. It also was in good harmony in ray floret color and flower center color with stable flower shape, and vase life was 9.1 days. The average yield of ‘Sunnyeo’ was 50.4 flowers per plant per year in the greenhouse yield trials carried out from 2001 to 2002. This cultivar registered for commercialization in 2003. ‘Sunnyeo’ would be cultured under greenhouse condition in Korea.
Breeding of a New Bright Pink Gerbera 'Oksem' with Strong Peduncle for Cut Flower
Chung, Yong-Mo ; Chung, Young-Soo ; Lee, Yeong-Byeong ; Kim, Jeong-Bu ; Kwon, Oh-Chang ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 361~363
A new bright pink gerbera (Gerbera hybrida Hort.) cultivar ‘Oksem’ was developed from a cross ‘Picasso’ and ‘Rava’ followed by seedling and line selections at the Flower Breeding Research Institute, Gyeongnam Agricultural Research and Extention Services (ARES) in 1999. Characteristics trials were conducted three times from 2001 to 2002. Newly Bred ‘Oksem’ showed pink color (RHS 23-D), green center, semi-double type and large flower. It also was in good harmony in ray floret color and flower center color with stable flower shape, and vase life was 12.2 days. The average yield of ‘Oksem’ was 48.9 flowers per plant in the greenhouse yield trails carried out from 2001 to 2002. This cultivar registered as commercialization in 2003. ‘Oksem’ would be cultured under greenhouse condition in Korea.
Effects of Dyeing Conditions of Natural Colorants from Disused Marigold Plants on Dyeability of Silk Fabrics
Heo, Buk-Gu ; Jang, Hong-Gi ; Kim, Sun-Ho ; Heo, Won-Noung ; Cho, Ja-Yong ; Park, Yun-Jum ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 364~369
Dyeing properties of dyestuff materials from the disused marigold plants were investigated under several dyeing conditions including dye concentration, temperature, and pH on dyeability of silk fabrics. The dyestuff was extracted from the disused marigold plants, spray-dried, and made into powder. The silk fabrics showed yellow surface color even though the surface color differed depending on mordants. The color strength, a and b values were increased as dyestuff concentration and dyeing duration increased, while L values decreased. Especially, the values of a and b were highest at 45 minutes after dyeing. The L value was lower (49.12 to 64.33) at higher dying temperatures of 90 to 100
C than at lower temperatures of 70 to 80
C. The values of a and b, however, were higher at lower dying temperatures than at higher temperatures. The silk dyed showed the highest
E values and the lowest L values at pH 5, indicating that the silk exhibited thick colors. However, the value b showed the highest level at pH 7. In conclusion, we validated that the dyestuffs from the disused marigold plants would be useful as a natural dye material using the optimized conditions and dyeability for silk dyeing.
Dyeability of Silk and Cotton Fabrics by Leaf Extracts of Kiwifruit
Jang, Hong-Gi ; Park, Yong-Seo ; Kim, Tae-Chun ; Jo, Ja-Yong ; Kim, Chun-Gwang ; Heo, Buk-Gu ; Park, Yun-Jeom ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 370~374
This study was carried out to clarify the utilization potential of natural colorants extracted from kiwi fruit ‘Buruno’ (Actinidia delicosa) leaves as a natural dye. Kiwi leaves were harvested at vegetative stage on September 2003, extracted with boiled water, and evaporated. Silk and cotton fabrics were dyed with the leaf extracts and their surface colors were investigated by using spectrophotometer. Effects of daylight, laundry times and pH on the color fastness of dyed silk or cotton fabrics were examined. Overall surface color of silk and cotton fabrics dyed with the colorants was mainly bright yellow, ranging from 5.90 to 35.34 in b value. However, no difference in the surface color among mordants was observed. Surface colors was not affected by leaf dryness before extraction indicating that the both extracts from fresh and dry leaves can be used as natural dyeing materials. No significant difference in the resistance of color fastness by laundry time were observed. Surface color of dyed silk and cotton fabrics without mordants was not affected by sunlight treatment, while surface color with mordants was changed (P<0.01). Surface colors did not changed when immersed in acid or alkaline solutions. Washing with different pH solutions did not affect surface color, showing high color fastness in the acid or alkaline solutions. In conclusion, the extracts from kiwi fruit leaves can be widely used as natural dyes with the potential in color fastness.
Utilization of Pruned Pear Branch as a Potential Natural Dye Material
Jang, Hong-Gi ; Kim, Tae-Choon ; Park, Yong-Seo ; Cho, Ja-Yong ; Kim, Chun-Kwang ; Heo, Buk-Gu ; Park, Yun-Jum ;
Korean Journal of Horticultural Science and Technology, volume 22, issue 3, 2004, Pages 375~380
Utilization of pruned pear branches as a potential natural dye was investigated. Cotton and silk fabrics were dyed with extracts from pear branches at 70
C to 80
C. After dyeing, the fabrics exhibited red-yellow colors. The fabrics treated with air-slaked lime and sodium hydroxide as mordants showed red surface color, while fabrics treated with alum (AlK(SO_4)_2) showed yellow color.
E values decreased and L values increased with increasing of washing times. No significant difference in the values of
E, a, and b of the fabrics, when washed the dyed fabrics with solutions ranged from pH 4 to 10, were observed. The fabrics exhibited high resistance to the laundry. Resistances of fabrics to sunlight showed significant difference in
E, a and b values of the dyed fabrics (P<0.5) as influenced by sunlight treatment and mordants.