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RISS 인기검색어
- 검색키워드
- 저자 : ?鍾珍(Hwang Jong Jin) (검색결과 3 건)
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Jong Jin Hwang(黃鍾珍),Byung Ryeol Sung(成炳列),Kyu Bok Youn(延圭復),Chon Suh Park(朴天緖) 한국육종학회 1987 한국육종학회지 Vol.19 No.1
The objective of this study was to determine by using Hayman’s six parameter model whether epistasis played a significant role in the genetic systems for culm length among several winter wheat (Triticum aestivum L.) cultivars. Parents, F₁, F₂ and first generation backcrosses (B₁ and B₂) of five crosses were grown in the field of Wheat and Barley Research Institute in Suwon, Korea, from October, 1984 to June, 1985. There were some deviations between F₁s and their Mid-parent to suggest the presence of the considerably different degree of gene interaction of additive and non-additive depending upon crosses. Narrow-sense heritability estimates on culm length were very high for three crosses and moderate for two. GS(Gain from selection) of each cross ranged from 13 to 30%. Although additive and dominant gene action were considerable in most crosses, fitness of 3-parameter model was not significant for culm length of wheat crosses. Six-parameter model analysis showed that dominant x dominant epistasis, additive x additive epistasis and dominance gene action significantly affected the expression of culm length in most crosses.
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Jong Jin Hwang(黃鍾珍),Kyu Bok Youn(延圭復),Hong Suk Lee(李弘䄷,) 한국육종학회 1986 한국육종학회지 Vol.18 No.2
This study was carried out to evaluate the minimum duration of low temperature treatment required for vernalization of rye, triticale and oats varieties in Suweon, Korea. Low temperature(4℃) treatments for vernalization were made in green-seed(Budding Seed) stage for different duration such as ten, eight, seven, six, five, four, three, two, one and zero weeks, respectively. After treatment, all of the treated plants were transplanted into the greenhouse with 25℃/20℃(day/night) and 24 hour-day length condition to be grown until flag leaf emergence. And then, days from transplanting to flag leaf emergence were observed and the results was shown as follows : Five varieties, including ‘Megwiri’ appeared to be grade Ⅰ for growth habit, one, grade Ⅱ, two grade Ⅲ, and one, grade Ⅳ in oats. In triticale two varieties, including ‘Sinkihomil’ appeared to be grade Ⅲ, five, grade Ⅱ, and one, grade Ⅳ. In rye two varieties, including ‘Karlshulder (Spring)’ and ‘Sorom’, grade Ⅰ, one, grade Ⅳ, three, grade Ⅵ, six, including ‘Paldanghomil’, grade Ⅶ, one, grade Ⅸ, and two, beyond grade Ⅹ.
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小麥品種育成 方法에 關한 硏究 第1報 實驗誤差, 品種, 環境 및 品種×環境의 分散 成分 比較와 地域 및 反復數 推定
Don Jae Maeng(孟敦在),Kyu Yong Chung(鄭奎鎔),Jong Jin Hwang(黃鍾珍),Byung Ryul Sung(成炳列) 한국육종학회 1985 한국육종학회지 Vol.17 No.2
Eleven wheat lines were grown at 6 locations for 2 years to analyze the variance components of error, genotype, genotype-location, genotype-year and genotype-location-year, and to estimate their implication for the optimum number of replications and locations, explaining the interpretation of appropriate parameters related to biometrics. In analyses of variance for grain yield and its components, there were non-significant in location and year, but highly singificant in genotypes. As far as G-E interactions are concerned, there showed significant variations, especially indicating the higher significance for 2nd order interaction rather than 1st order. Mean square expectations such as σ²gsy, σ²gy, σ²gs and σ² were computed by subtraction of pooled mean squares, and variance of mean for a genotype(σ²/p) and environmental variance(σ²/g) were obtained from these mean square expectations. Among the variance components for G E interaction, there appeared highest variation in σ²gsy, which would be desirable for plant improvement. Thus, σ²e and σ²gsy, were more important than that of σ²gs and σ²gy because of their implication for estimation of optimum number of replications and locations. It was more suitable to be grown at 6 locations with 2 replications for this experiment, thus indicating that increase of locations would be much more important than that of replications. However, estimate of number of years should be conducted upon basis of gain from selection(Gs) relating to selection intensty and heritability as well as long and short term selections.
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