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RISS 인기검색어
- 검색키워드
- 저자 : J.J. HWANG(黃鐘辰) (검색결과 3 건)
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酸性土壤과 Aluminum 營養液을 利用한 小麥 耐酸性 品種 選拔方法에 關한 硏究
J. J. Hwang(黃鍾珍),C.H. Cho(曺章換),B. H. Hong(洪丙憙) 한국육종학회 1984 한국육종학회지 Vol.16 No.1
A method was developed to screen wheat varieties for A1 response in nutrient solution cultures. Eight varieties were grown in box of nutrient solution containing either 0 or 0.6 mM Al. In the green house the same eight varieties were grown in pots of acid soil with pH 4, pH 5, and pH 6 (control), respectively. Alumium tolerance ratings obtained by those two methods, nutrient solution and acid soil culture, were in good agreement with each other. Significant correlation coefficient were found between ratio of root length(0.6 mM AI./0 mM ; control × 100) in nutrient solution and ratio of yield per plant (pH 4/pH 6 ; control ×100) in the acid soil (r=0.8187**), and between ratio of root length and ratio of number of grains per spike (r=0.7008*) Yield per plant, number of grains per spike, number of tillers per plant were greatly affected by the degree of acidity of soils. Varieties × soil pH interaction was found so significant for yields per plant, number of grains per spike, and number of tillers per plant that can classify A1 tolerant or sensitive variety. On the basis of above results, seventy eight wheat varieties was screened for A1 response in nutrient solution cultures. Atlas 66, Kyeongkwang, Suweon 205, Suweon 207 and Bezostaia were classified into Al tolerant varieties and 15 varieties including Chokwang, Geurumil, Yeongkwang and Suweon 89, mid tolerant varieties, 22 varieties including Jankwang and Naemil., moderate, and 36 varieties including Saemil and Eunpamil, sensitive.
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J.J. HWANG(黃鍾珍),H.S. LEE(李弘䄷,) 한국육종학회 1983 한국육종학회지 Vol.15 No.1
This study was conducted to examine the response of daylength on the growth and development of soybean plant. Soybean varieties such as Seocheonbaikdu, Danyubkong, and Baikcheon were tested. The most effective time and or period of short day treatment for shortening days from seeding to flowering (DSF) was from emergence to flowering. Short day treatment (SDT) period which most effectively shorten days from flowering to maturity was from 15 days after emergence to flowering or maturing in Seocheonbaikdu, from 45 days after emergence to maturity in both Danyubkong and Baikcheon. Shortday treatment which most effectively shorten the days from seeding to maturity was the short day treatment from emergence to maturing. In general, the effects of SDT was well demonstrated by the earlier SDT and the longer SDT period in most characters. Shortday treatment for 15 days was seemingly insufficient to transit plants to reproductive phase, otherwise the natural daylength, possibly longday could be a factor interfering phasal transition.
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B.K. KIM(金鳳九),K.W. CHUNG(鄭吉雄),J.C. CHAE(蔡濟天),J.J. HWANG(黃鐘辰) 한국육종학회 1982 한국육종학회지 Vol.14 No.3
To establish a simple method for testing varieties for aluminum tolerance and to screen the acid tolerant varieties, fifty wheat varieties and lines were grown in the experimental case with nutrient solutions containing the different Al concentration and days after 3~4 days at 20℃. The results showed that varietal differences were greatest in the nutrient solutions containing 0.6/mM Al and days after 3~4 days transplanted with sprouted seeds, and Atlas 66, Chokwang, Geurumil, Suweon 205, Naemil, Suweon 185, Suweon 89, and Changkwang were Al-tolerant.
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