• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2002.11a
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• pp.233-240
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• 2002

식물체내에 미량으로 생성되어 식물체내의 생리적인 작용을 크게 변화시켜 식물의 생장과 발육을 촉진 또는 억제하는 생장조절물질의 종류로는 Auxin, Cytokinin, Gibberellin, Abscisic acid, Ethylene, Brassinosteroids, Polyamine, Jasmonates 등이 있다(byun, 1982). Gibberellin은 포도의 경우 씨 없는 포도(무핵과)를 만드는 기술이 델라웨어 품종을 주축으로 실용화 되어있고(Weaver, 1972) 배의 행수와 신고 품종에서는 Gibberelli paste처리에 으해 5∼7일의 숙기 촉진과 함께 과중의 비대에 효과가 있으나 이러한 Gibberellin 계통의 식물생장조절제 사용으로 과실의 경도가 낮아지고 부패과, 밀병 및 분질화 등의 생리장해가 발생하고 보구력이 크게 떨어지는 단점이 있다. (중략)

• Proceedings of the Plant Resources Society of Korea Conference
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• 2001.04a
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• pp.71-79
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• 2001

• Applied Biological Chemistry
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• v.14 no.2
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• pp.171-175
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• 1971

Gibberella fujikuroi(imperfect stage Fusarium moniforme) a soil fungi is well known as the producer of plant growth regulator Gibberellins. The present work was planned for the isolation of the active strains of Gibberella fujikuroi from the native paddy soils. Twenty two strains were isolated from the infected rice seedlings collected from four local areas. Pyongtaek, Yesan, Tangjin and Sunchon and screened through the activity test for the production of Gibberellins. The strains P-105, Y-14 and T-58 yielded higher activity than the others isolated and the referred strain IAM-8048. The strains Y-5, Y-7, T-54 and S-152, however, were less promotive or rather inhibitory in the growth of rice seedlings. Six different kinds of culture media developed by Cross, Raulin-Thom, Borrow, West, Stodola and Kurosawa respectively were compared with each other for the production of Gibberellins and the best result was obtained with Raulin-Thom's media(glucose 16% and $NH_4NO_3$ 0.24%).

• Proceedings of the Korean Society of Crop Science Conference
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• 2006.04a
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• pp.102-103
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• 2006

• Proceedings of the Korean Society of Crop Science Conference
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• 1987.06a
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• pp.30-31
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• 1987

• Proceedings of the Korean Society of Crop Science Conference
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• 1987.06a
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• pp.32-33
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• 1987

• Korean Journal of Plant Resources
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• v.27 no.3
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• pp.229-235
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• 2014

Flax (Linum usitatissimum L.) has been used for the edible oil in Korea. The evaluate the effect of plant growth retardants on flaxseed yield, oil content, and gibberellin level, chloromequat chloride (CMC), paclobutrazol (PBZ), and prohexadione-Ca (PHC) were used as plant growth retardants in this study. These plant growth retardants were foliar-sprayed to flax plant at 55 days after seeding. The concentrations of each plant growth retardant were as followed: CMC 250, 500, 1000 ppm, PBZ 40, 80, 160 ppm and PHC 500, 1000, 2000 ppm. PHC treatment to forming bolls was more stimulated than CMC and PBZ. The highest ripened seed rate was observed in PHC treatment at 2000ppm. The high see yields were obtained in PHC treatment following PBZ and CMC, in turn. Seed yield that significantly increased in PBZ and PHC was found to be increased 12.4 ~ 23.9% as compared to the control. The PHC showed higher flaxseed production and oil yield than that of CMC and PBZ. The results obtained in the present study suggest that higher concentration of plant growth retardant (PHC) increased flaxseed yield and oil content. The optimal concentration of PHC treatment was observed in 2000 ppm. It concludes that the foliar application of PHC 2000 ppm may be useful for the increasing oil and higher seed production in flax plants.

• Journal of Plant Biology
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• v.5 no.3
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• pp.11-20
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• 1962

CHA, Jong Whan (Dept. of Biology, Coll. of Education, Seoul National Univ.) Effect of Gibberelline on the growth and internal components of selected vegetable plants. Kor. Jour. Bot. V(3):11-20, 1962. The effect of GA on the growth as well as on the internal components of theleaves of ordinary vegetable plants under the soil culture was investigated. A relatively small difference in GA concentration applied showed a marked influence on the growth and constituents of the plants observed. The increase of growth was related to a highly significant digree with the intensity of GA. chlorophyll and carotene content in the leaves were significantly with increasing concentration of GA, except for some plants. The growth in all examined plants did not correspond to the contents of chlorophyll and carotene. In contrast the ascorbic acid in the leaves treated with GA decreased in proportion to the GA concentrations. Chlorophyll and ascorbic acid value differed greatly during the two experiments and the difference was proved significant. Carotene content varied with chlorophyll although the ratio of chlorophuyll to carotene was not so high as that obtained by Beak and Redman.

• Korean Journal of Medicinal Crop Science
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• v.1 no.2
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• pp.104-108
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• 1993

This experiment was conducted to obtain the basic information for the increase ofgermination percent by the treatment of stratification, soaking and $Gibberellin(GA_3)$ in Angelica gigas Seeds caltivated in 1989. The germination percent was increased by 30% with stratification, and the effect of low temperature did not differ significantly. The optimum soaking temperature and periods were found to be 4days at $20^{\circ}C\;and\;6dys\;l0^{\circ}C$ of water temperature. When exchanged water every day during soaking period, inhibitors were more extracted than non-exchange one. The exogenous application of $GA_3$ also increased germination percent about 20% campared with control, and the reasonable level was 2ppm in soaked seed and 5ppm in non-soaked seed.

• Korean Journal of Plant Resources
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• v.1 no.1
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• pp.48-52
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• 1988

In order to examine the effect of growth regulators on flower bud formation and anthesis, various growth regulators were applied during the initiation and growthstages of flower bud development in Camellia. The inhibitor CCC increased flowerbud formation. But gibberellin had a strong suppressing effect of flower budformation while it stimulated elongatien of shoots. On the other hand, gibberellinpromoted the growth of flower buds and hastened anthesis, while other growthregulators had no effect.