• Title/Summary/Keyword: 장경(蔣慶)

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Effects of Reciprocal Grafting between Varieties on Growth and Yield in Soybeans (콩 품종간의 상호접목이 생육과 수량에 미치는 영향)

  • 정승근;손석용;허성수
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.37 no.4
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    • pp.339-346
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    • 1992

  • Self-and reciprocal-graftings were made between soybean varieties(cv.Hwangkeumkong, Paldalkong, Bokwangkong and Jangkyongkong) to assertain the relative role of shoot and root in soybean growth and yield determination. The influence of grafting per se on plant height and leaf number on main stem were negligible as evidenced by the insignificant differences between self-and reciprocal-graftings. The effect of grafting on flowering was different between different set of varieties grafted reciprocally. Self grafting delayed flowering 2 days and reciprocal grafting delayed another 2 days, in general. The effects of grafting on dry weights of different plant parts except pod were also insignificant. Reciprocal grafting increased pod dry weight in Hwangkeumkong and Paldalkong regardless whether they were used as scion or stock. Reciporcal grafting also influenced dry weights of Bokwangkong and Jangkyongkong significantly, but the response was different from those of Hwangkeumkong or Paldalkong. Jangkyongkong, when used as stock, decreased total dry weight of Bokwangkong significantly through the reduction of pod and stem dry weights. Stem diameter was increased by grafting, however, grafting decreased number of branches in all varieties. The average yields of self-and reciprocal-grafting were decreased by 11% and 24%, respectively, comparing to that of non-grafting, while average yield of reciprocal grafting was 14% lower than that of self grafting. Stem weight of grafted soybeans was decreased by 29-32% comparing to that of non-grafted soybeans, but the difference between self and reciprocal graftings was negligible. The genetic characteristics of scion was found to be more important than those of stock in determination of yield and stem weight. It was also indicated that varieties and characteristics are different in response to grafting.

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Effects of Topping Methods on Yield and Major Agronomic Characteristics in Hibiscus manihot L. (적심방법이 닥풀[Hibiscus manihot L.]의 주요형질과 수량에 미치는 영향)

  • 김상곤;김철우;정동희;권병선
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.39 no.3
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    • pp.256-261
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    • 1994

  • To investigate the effects of topping method on the yield and major agronomic traits of three varieties differed in plant type of Hibiscus manihot the experiments were carried out Mokpo Branch Station of Crop Experiment Station, in 1993. Fresh weight of root, dry weight of culm, dry weight of capsule and dry matter ratio on root were highest in the long culmed variety, and at the plots with topping of growing point in main culm and branches(Treatment No.3). Considering from the above results, optimum topping method seemed to be topping of growing point in main culm and branches in the long culmed variety.

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