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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean Journal of Horticultural Science and Technology
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Korean Society of Horticultural Science
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ffects of Seed Chilling and Sowing Media on Seedling Quality in Cucurbits for Grafting
Kim, Du-Hyeon ; Lee, Jung-Myung ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 291~296
Effects of chilling of imbibed seeds and sowing media on seedling quality were examined in several cucurbitaceous crops grown for grafting. Among the substrates used for growing bottle gourd seedlings in trays of 72 cells, commercial pot substrate (Barokoe) showed the best seedling growth, indicating the importance of the sowing media used for growth promotion of very young seedlings even before the time of first true leaf unfolding. Presoaking the seeds in water increased the seedling emergence rate of watermelon, cucumber, and figleaf gourd. In bottle gourd seeds, however, the emergence rate was significantly reduced by the presoaking treatment. Low temperature storage of seeds after imbibition was effective for increasing percentage of healthy seedlings for grafting, possessing short and thick hypocotyl.
Effect of Plug Cell Size, Seedling Age, Standing Number and Transplanted Depth in a Level Low on the Growth and Yield of Welsh Onion (Allium fistulosum L.)
Lee, Jung-Soo ; Shin, Young-An ; Seong, Ki-Cheol ; Um, Young-Cheol ; Yu, Byeong-Cheon ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 297~301
The experiment was conducted to examine the effects of seedling ages, seedling numbers, plug cell volume and planting depths in a level row on the growth and yield of Welsh onion. Transplanting depths (0, 1.5, 3 cm) did not affect the yield of Welsh onions. However, 60-day-old seedling produced significantly greater yield than those of 30 or 45-day-old seedlings. Yield of seedling raised in 288-cell (47.6 ton/ha) trays was higher than 200 or 488 cells, and 3-standing seedling (59.2 ton/ha) was higher than other standings (1, 5 standing). It is suggested that the seedling of Welsh onions raised for 60 days and 288-cell trays with 3 standings could be advantageous in producing marketable yield.
Forchlorfenuron Application Increases Fruit Set Rate and Fruit Growth of Oriental Melon (Cucumis melo L. var. makuwa, cv. Geumssaragi-Euincheon) Plants
Chung, Hee-Don ; Do, Han Woo ; Choi, Young-Jun ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 302~305
The effects of forchlorfenuron [1-(2-chlor-4-pyridil) 3-phenylurea, FCF, trade name Fulmet] application on fruit set and subsequent fruit growth of plasticultured oriental melon (Cucumis melo L. var. makuwa Mak. cv. Geumssaragi-Euincheon) were examined for two years at Seongju-gun, Gyeongbuk, Korea. FCF of 100 time solution was treated on the ovary surface at two days before (BF), the day of (DF) or 2 days after flowering (AF), and also 4-CPA (4-chlorophenoxy acetic acid) of 100 time solution was treated at the day of flowering (full bloom), respectively. Fruit setting of the plants treated with FCF at BF or DF was 97% and higher than those of 4-CPA treatments. Untreated plants gave no fruit set. Fruit length and weight of the FCF treated plants were significantly longer and heavier than those of 4-CPA treatments. Futhermore, fruit firmness was increased by FCF treatment. Fruit sugar content of FCF treated plants was almost the same as the 4-CPA treated ones. The tertiary vines and fruit stalks of the FCF treated plants showed thicker in diameter than those of 4-CPA treated or untreated plants. The FCF treated plants showed no noticeable toxicity symptoms. In conclusion, the results demonstrated that FCF treatment on oriental melon was conducive for improving the fruit set and its quality.
Effect of Daylength and Temperature after Bolting on Flower Curd and Seed Yield of Early Onion 'Samnamjosaeng'
Im, Chae-Shin ; Park, Tae-Hun ; Cho, Jeoung-Lai ; Kang, Seong-Mo ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 306~308
This study was conducted to advance flowering period of 'Samnamjosaeng' onion by controlling daylength and temperature after bolting, there by to increase seed yield. Bract opening and floret flowering were advanced more at 12.5-hour than at 14-hour daylength. Seed yield was more at 12.5 hour daylength. The time of floret flowering at 25
was advanced by about 11 days and more seed yield with 0.7 mL difference at a flower curd.
, pH, Agar Concentrations, and Dark Treatments on Shoot Induction from Cotyledon and Hypocotyl Explants of Chinese Cabbage
Kang, Byung-Kook ; Kim, Se-Yeong ; Park, Young-Doo ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 309~313
To improve organogenesis in Chinese cabbage (Brassica campestris L. ssp. pekinensis) in vitro, the effects of AgNO_3, pH, agar concentrations, and dark period on shoot induction from cotyledon and hypocotyl explants were studied. Shoot regeneration was significantly promoted on the induction medium supplemented with AgNO_3 from cotyledon and hypocotyl explants. Among AgNO_3 treatments, the medium supplemented with 4 or 8 mg/L AgNO_3 had relatively higher shoot regeneration rates and less vitrification developments in cotyledon and hypocotyl, respectively. Initial dark treatments decreased shoot induction from cotyledon and hypocotyl explants. Shoot induction from hypocotyl explants was not affected by pH in media or agar concentrations either. In conclusion, for cotyledon, the best shoot induction was obtained when the medium was supplemented with 2.0 mg/L NAA, 1.0 mg/L BA, and 4 mg/L AgNO_3. For shoot induction, the medium with 1.0 mg/L NAA, 5.0 mg/L BA, and 8 mg/L AgNO_3 gave best result from hypocotyl tissues.
Effect of Pre-drying and Chemical Treatments on Storability of an Early Onion (Allium cepa L.)
Im, Chae-Shin ; Lim, Jong-Min ; kang, Seong-Mo ; Cho, Jeoung-Rae ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 314~318
Early onions do not store well due to high percentage of rotting and sprouting compared with middle or late onions. The objective of this study was to find optimum storage methods for an early onion c.v.'Samnamjosaeng' by pre-drying and chemical treatments before summer storage. After a 4-month storage, rotting percentages of the early onion stored at 5
C and room temperature showed the same results. However, when is was stored at 13.5
C, rotting percentage was 54. The highest percentage of sprouting was 40.7 when stored at 13.5
C. The lowest percentage of sprouting of 13% was obtained when stored at room temperature. Large bulbs (>200g) were more susceptible to rot than small bulbs (100g>). The treatments of sulfur and CaCO_3 were more effective for preventing bulbs from rotting than other chemicals, reducing the rotting by about 13%. High temperature and long periods of pre-drying significantly reduced rotting and sprouting. Drying at 45
C for 48 hours at 15-day intervals for 120 days was most effective in reducing rotting and sprouting by more than three times as compared with the controls.
Chemical Control of Potato Common Scab (Streptomyces scabies)
Park, Young-Bae ; Kang, Ho-Jong ; Been, Chul-Gu ; Choi, Young-Hah ; Choi, Young-Whan ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 319~324
This experiment investigated the effects of agrochemicals such as streptomycin WP, streptomycin sulfate oxytetracyclin WP, and trichlamide DP on potato common scab. Application of streptomycin WP and streptomycin sulfate oxytetracyclin to seed tubers significantly lowered the incidence of potato common scab as compared to the control. Broadcast or ridge application of trichlamide DP 30 to 40 kg/10a was also effective. Broadcast application lowered the incidence of potato common scab disease than ridge application in Suwon area. Relatively lower occurrence of potato common scab was observed when applied with 30 kg/10a than 40 kg/10a by broadcast application in Daegwallyeong highland area.
Effect of Root Restriction and Polyethylene Film Mulching on the Fruit Quality of Satsuma Mandarin (Citrus unshiu Marc. cv. Uenowase)
Rno, Il-Rae ; Kim, Yong-Ho ; Koh, Sang-Uk ; Kim, Chang-Myung ; Moon, Young-Eel ; Han, Seung-Kap ; Kim, Seung-Hwa ; Choi, Young-Hoon ; Kim, Han-Yong ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 325~329
This experiment was conducted to determine the effect of planting system on the fruit quality of Satsuma mandarin (Uenowase) in citrus orchard. The planting system was flat field planting, ridge-up bed with 50 cm, root restriction (soil surface was covered with non-woven fabric sheet and then was filled by soil up to 50 cm), and root restriction+polyethylene mulching at fruit developing period. Fruit weight at flat field, ridge-up bed, root restriction, and root restriction+P.E. mulching were 128.6, 124.2, 118.8, 105.2 g, respectively, showing that fruit weight at root restriction or root restriction+P.E. mulching had a tendency of decreasing as compared with that of flat field. Peel thickness had a similar trend as fruit weight, showing that peel thickness was decreased by 0.4 mm as compared with that of flat field. Generally, the soluble solids level is considered to be representing the fruit quality. It had 9.0, 9.3, 9.2, 11.3
Bx for flat field, ridge-up bed, root restriction, and root restriction+P.E. mulching, respectively. It showed 2.3
Bx difference between flat field and root restriction+P.E. mulching. Acidity showed the similar trend to that of the soluble solids level depending on the planting system, but there were no significant difference among treatments. The planting system applied, in the order of decreasing soil moisture potential, were: flat field, ridge-up bed, root restriction, and root restriction+P.E. mulching, respectively. The time required to reach -1.3 Mpa at 20 cm deep in soil, which are supposed to be the ideal soil moisture potential for high quality satsuma mandarin production, was 100 days only at root restriction+P.E. mulching. Diffusion resistance increased in the order of restriction+P.E. mulching, restriction, ridge-up bed, and flat field, and thus transpiration volume decreased.
Selection of Crabapple as Pollinizers for Major Apple Cultivars in Apple Orchard
Kang, In-Kyu ; Lee, Gye-Jun ; Kim, Mok-Jong ; Kwon, Soon-Il ; Peak, Pong-Yeol ; Choi, Dong-Geun ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 330~334
Nine crabapples potentially useful as pollinizers in apple orchard were evaluated for their flowering times, percentage of pollen germination, fruit setting, and disease resistance. Flowering dates of ‘Professor sprenger’, ‘Gorgeous’, ‘Atrosanguiner’, and ‘Adam’s’, whose flowering dates ranged from April 21 to May 3, coincided with the flowering of ‘Fuji’, ‘Kamhong’ and ‘Hwahong’ cultivars. Four crabapples had high percentage of pollen germination and fruit setting when controlled pollination was performed with ‘Kamhong’, ‘Hwahong’ and ‘Fuji’. They were resistant to insect, such as apple blotch, sooty blotch and fly speck. Fruits of these three cultivars pollinated with any of four crabapples were similar to open pollinated fruits in terms of fruit length/diameter, fruit weights, seed numbers, fruit hunter value a, soluble solids, acidity, and flesh firmness. ‘Professor sprenger’, ‘Gorgeous’, ‘Atrosanguiner’, and ‘Adam’s’ crabapples as pollinizers of three cultivars had no adverse effect on fruit quality. In sum, the four crabapples indicated above could be promising pollinizers for late flowering major apple cultivars.
Effect of Pretreatment Conditions of Temperature and Weight Reduction on the Storability for Long-term Storage of Satsuma Mandarin
Nam, Ki-Woong ; Kwon, Hyeog-Mo ; Kim, Kwang-Sik ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 335~339
The optimum pretreatments of temperature and weight reduction were investigated to prolong the storability of Satsuma mandarin. During storage, the natural weight loss of Satsuma mandarin was lowest at 25
C pretreatment with 5% weight loss, while weight loss due to rot was lowest at 20
C pretreatment with 3% weight loss. Soluble solids increased with elapsed time but the acid content decreased to about 1.0% in late storage stage (late March). Flavor of Satsuma mandarin was not different among pretreatment conditions of temperature and weight reduction rate. Results suggested that the pretreatment at 20
C showing 3% weight reduction was the best for the common storage of Satsuma mandarin.
Influence of Modified Atmosphere Packaging on Fruit Quality of 'Tsunokaori' Tangor during Cold Storage
Choi, Young-Hun ; Ko, Sang-Uk ; Kim, Seung-Hwa ; Kim, Yong-Ho ; Kang, Sung-Ku ; Lee, Chang-Hoo ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 340~344
To investigate the effect of modified atmosphere packaging, CO_2 absorbent CaO and ethylene absorbent KMnO_4 on the fruit quality of miscellaneous citrus fruit during cold storage, ‘Tsunokaori’ tangor citrus fruits ((Citrus sinensis×C. unshiu)×C. unshiu) in low density polyethylene bags with or without CaO and KMnO_4 were stored at 4
under a relative humidity of 85
5%. The CaO remarkably decreased water loss of fruit during storage. The organic acid content and sugar-acid ratio of fruit gradually decreased in all treatments. But the sugar content did not change during storage. Internal CO_2 content of fruit was also discussed as related to the changes in fruit quality.
Improvement of Seed Germination in Native Iris sanguinea Donn ex Horn.
Lee, Eun-Ju ; Koh, Jae-Chul ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 345~351
This study was conducted to determine the effective method for enhancing seed germination of Iris sanguinea. The optimum temperature for seed germination of Iris sanguinea was 25
C regardless of light and dark condition. Removing testa and excising micropyle resulted in an apparent promotion in germination by 86% at 20 days after sowing. KOH, H_2SO_4 and Kinetin enhanced germination a little but NaOCl 5% for 5 minutes and HNO_3 0.5N for 18 hours treatments improved the seed germination. Xylene treatment was most effective for germination than any other chemical treatments. Xylene treatment showed the similar result to the testa removing treatment. The most effective treatment was the washing with xylene treatment for 5 minutes which brought about 83% germination at 20 days after sowing.
Changes of Dry Weight and Sugar Content in Dendrobium nobileat Maturity and Flower Bud Formation
Chae, Soo-Cheon ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 352~355
Changes of dry weight and sugar content after flag leaf occurrence and during flower bud formation in Dendrobium nobile Yukidaruma ‘King’, Malones ‘Fantasy’, Golden Blossom ‘Kogane’, Snowflake ‘Red Star’ were investigated. Dry weight and percentage of dry matter were low at the flag leaf occurrence but rapidly increased from 12.8 to 22.7 g as time elapsed. However, dry weight and percentage of dry matter decreased in case of Snowflake ‘Red Star’ after November. The analysis of sugar content in Dendrobium nobile showed that fructose and glucose content were highest at the stage of flag leaf occurrence and then decreased gradually. Unsoluble sugar content was lower at flag leaf occurrence in September, but reached its maximum in January and February.
A Scanning Electron Microscope Observation of Flower Bud Initiation and Development of Dendrobium nobile
Chae, Soo-Cheon ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 356~359
Anatomical observation of floral organ formation was conducted by a scanning electron microscope in Den. nobile Snowflake ‘Red Star’. The initiation of flower bud was developed into dome-like shape when air temperature reached below 10
C (around October 30). The formation of floret primordium was observed in 40 days thereafter (December 10). The differentiations of 3 sepal and 3 petal primordium and column formation were observed on December 20 and on January 30, respectively. Flowering occurred 100 days after initiation of flower bud (February 10). During the course of flower bud initiation it was observed that protrusion of growing points, which were unrelated to flower bud initiation. These growing points had no effect on flower development and flower differentiation, and developed into pseudobulb as daily average temperature increased.
Breeding of Rose 'Sabrina' with Vigorous Growth and Pink Color
Kim, Jin-Ki ; Kim, Jeong-Bu ; Kim, Zhoo-Hyeon ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 360~362
‘Sabrina’ rose cultivar (Rosa hybrida Hort.), originated in a cross between ‘Maaiki’ and ‘Angelica’ in 1997, was released as a new pink colored rose by Floricultural Experiment Station of Gyeongnam ARES. The examination of its characteristics was carried out for three years from 1999 to 2001. The new cultivar showed a red group color (RHS No. 52-C), had few thorns, gave high yield, and formed large flowers. The ray floret and flower center were well-harmonized, and the vase life of cut flower could be extended to nine days. This new cultivar can be produced in the greenhouses anywhere in Korea.
Breeding of Rose 'Temptation' with Good Shape and Red Color
Kim, Jin-Ki ; Kim, Jeong-Bu ; Kim, Zhoo-Hyeon ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 363~365
‘Temptation’ rose cultivar (Rosa hybrida Hort.) which was originated in a cross between ‘Top Secret’ and ‘Only Love’ in 1997 was released as a new red colored rose by Floricultural Experiment Station of Gyeongnam ARES. It had a red group color (RHS No. 46-A), few thorns and large flower with a good harmony between ray floret and flower center. The vase life of the cut flower was nine days. This new cultivar can be planted in almost all the greenhouse production regions in Korea.
Effect of Carbon, Nitrogen Source, Ca and Gelrite on the Bulblet Growthof Lilium Oriental Hybrids in vitro
Lim, Hoi-Chun ; Ahn, Min-Sil ; Choi, So-Ra ; Ryu, Jeong ; Choi, Dong-Chil ; Choi, Yeong-Geun ;
Korean Journal of Horticultural Science and Technology, volume 20, issue 4, 2002, Pages 366~371
To establish a bulb production system, the scales of Lilium Oriental Hybrids ‘Casa Blanca’ and ‘Marcopolo’ were cultured on medium in vitro. The tests were carried out with several media containing various source of carbon, nitrogen, calcium ion and gelrite with different concentrations. In the determination of the effect of carbon source, sucrose was the most effective among treatments in bulb growth. Sugar was less effective than sucrose and glucose showed the least effectiveness. It showed the ideal concentration of carbon sources for bulb growth was in the range from 60 to 90 g․L^.^1. In the effect of nitrogen source and concentrations, the number and weight of bulblet in ‘Casa Blanca’ was the highest in the treatment such as a mixture of 40mM ammonium nitrogen and nitrate nitrogen. Ten mM nitrate nitrogen also showed good bulblet growth in ‘Marcopolo’. Even though the varieties showed very different growth response to the calcium concentrations, the standard medium (440 mg․L^.^1) and increased calcium concentration to two times showed good results in number and weight of bulblet. Gelrite, a supporting material, showed better growth than agar with the concentrations of 23 g․L^.^1. When concentration of gelrite was 1 g․L^.^1, medium became semi solid form. Due to lack of respiration a survival ratio of plants was very low in the early stage of growth, but the growth of the survived plants was good.