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RISS 인기검색어
- 검색키워드
- 저자 : 延圭復(Kyu Bok Youn) (검색결과 4 건)
- 무료
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小麥의 出穗後 日數에 따른 小穗段別 粒重의 品種間 差異
Byung Ryeol Sung(成炳列),Kyu Bok Youn(延圭復),Yong Woong Ha(河龍雄),Sang Yang Lee(李相陽) 한국육종학회 1988 한국육종학회지 Vol.20 No.1
This experiment was carried out to investigate the change of kernel weight and the position of spikelet with the highest kernel weight on the spike of wheat varieties at 25, 35 and 45 days after heading from Oct. 1985 to June 1986 in Suwon Korea. Among 14 varieties tested, Suwon 239, with the latest maturing time, has been highest kernel weight of 14.9g, followed by Olmil, Geurumil and Eunpamil at 25 days after heading. Increment of grain weight was the most between 26 and 35 days after heading. Geurumil and Milyang 26 have the hightest kernel weight increment of 25g and Milyang 25 has the lowest of 13g during this period. Between 36 and 45 days after heading, however, Milyang 25 has much grain weight increment of 15g, followed by Suwon 242, Suwon 241 and Tapdongmil while Eunpamil and Olmil have very little increment in this period. There are three patterns of grain filling process. First, Suwon 242 and Milyang 25 show slow and progressive grain filling pattern from early to late period. Second, Eunpamil, Olmil and Suwon 239 which have lightier kernel weight of 34 to 37g show rapid grain filling patteren, nearly completing accumulation process by 35 days after heading. Third, the other varieties show that most of accumulating process was made between 26 and 35 days after heading but some process was continued untill even later period. Highly positive quadratic regression coefficient was between the position of spikelet on the spike and kernel weight, thus upper and lower part of spike having lighter kernel and middle part of spike, heavier kernel which were in the 8th to 10th spikelet on the spike.
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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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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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