http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
水稻의 耐冷性에 關與하는 몇가지 形質의 遺傳에 關한 硏究
J.K. SOHN(孫再根),G.S. CHUNG(鄭根植),M.S. LIM(林茂相) 한국육종학회 1979 한국육종학회지 Vol.11 No.1
In order to determine the inheritance of several characters related to cold tolerance in rice, F₁ hybrids were made by diallel cross among six rice varieties slowing the different reactions for cold tolerance. Parents, F₁ and F₂ plants were subjected to low temperature of 10℃ for 10 days in the phytotron at seedling stage. Another set of hybrid populations planted lately in field to distinguish the degree of leaf discoloration in late autumn. Most of crosses that crossed with M₁49 and IR800-14-3-2 showed relatively high specific combining abilities in cold tolerance. The results of Fl diallel analysis and the segregation mode of F2 plants for cold tolerance at seedling stage showed that cold tolerance was complete dominance aver cold susceptibility. In case of leaf discoloration in the field, the segregation mode also agreed with simple inheritance ratio(3 : 1). But it has not indentified that these segregation ratio can be agreed with those under different temperature conditions and those of much more cross combinations. In Vr-Wr graphical analysis, M₁49 and IR800-14-3-2 appeared to be contained most of dominant genes for cold to lerance, while IR1317-392-1-2-2 contained most of recessive genes. In the inheritance of days to heading of parents in the late season culture, early maturity showed partial dominance over late maturity. It was demonstrated that several combinations crossed with cold tolerant variety, IR800-14-3-2 or M₁49, had relatively high s.c.a. effects for early maturity.
H. C. Choi(崔海椿),G. S. Chung(鄭根植),S. Y. Cho(趙守衍),B. S. Choi(崔富述),C. Y. Kim(金七龍),T. S. Kwark(郭泰淳),D. C. Lee(李東昌),N. K. Park(朴南圭) 한국육종학회 1984 한국육종학회지 Vol.16 No.2
To evaluate stability for grain yield of rice breeding lines and to identify the environmental status of some rice breeding sites, twenty one breeding lines (japonica; 13, indica; 8) and four check cultivars were grown at seven locations(Suwon, Cholwon, Chinbu, Yonkok, Unbong, Yongdok, Hwaso) in 1983 and the data for grain yield and other agronomic characters was analyzed by the method of stability analyses3,4) and principal component analysis.8) The results are summarized as follows; 1. Yongdok showed similar growth duration with Suwon, but other sites showed about 5-14 days longer duration than Suwon in the order of Hwaso < Unbong < Cholwon < Chin bu < Yonkok. Un bong pointed out the highest mean grain yield, 698 kg/10a and it was followed by the order of Suwon > Chol won> Hwaso > Yongdok > Chinbu > Yonkok. Yonkok might be a desirable site for selecting tolerant materials to so-called delaying-type cold, since it showed the most delayed heading time, the widest intervarietal variation of heading, the lowest level and smallest intervarietal variation in grain yield. 2. Among seven locations Cholwon, Unbong and Hwaso revealed similar ecological reaction by principal component analysis using mean value and standard deviation of some agronomic characters, but Unbong, Hwaso and Yongdok were similarly characterized by meteorological factors during the rice growing period. Yonkok and Chinbu showed nearly similar ecological response but were diff erently characterized by meteorological factors. Seven locations were classified largely into two regions by clustering based on correlation coefficients between genotype×environment (G×E) interaction term for grain yield at each location. 3. The yield stability of rice breeding lines can be evaluated by any parameters such as regression coefficients, residual mean squares deviated from the regression3), and 1st principal component extracted from G × E interaction term 8). Most indica lines revealed higher yield potential but lower stability than japonica strains. 4. The 1st principal component extracted from G×E interaction term for grain yield indicated close correlationship with the regression coefficients, deviations from the regression, average grain yield and coefficients of variation for yield. Also the regression coefficients showed significant positive correlation with deviations from the regression and average grain yield. 5. Contributions of the components to grain yield were largely different between locations; that is, number of panicles per hill acted decisive role on grain harvest at Yonkok and Yongkok, while number of spikelets per panicle mainly contributed to yield at Suwon, Unbong and Hwaso. 6. Average grain yield at each location were closely correlated with mean air temperature and average daily sunshine hours during the grain filling period.
벼 葯培養에어서 Callus 生育程度가 器管分化에 미치는 影響
S. J. Yang(楊世準),J. K. Sohn(孫再根),S. K. Lee(李壽寬),G. S. Chung(鄭槿植) 한국육종학회 1984 한국육종학회지 Vol.16 No.3
Distribution of callus induction after anther inoculation and effect of callus age on plant differentiation were studied for improvment of culture efficiency in rice anther culture in vitro. N6 basic medium supplemented with 2㎎/ℓ of NAA and 1㎎/ℓ of kinetin used for callus induction, 0.1㎎/ℓ of IAA and 1㎎/ℓ of kinetin for plant differentiation. Varietal difference in callus induction was recognized, and the frequency of callus induction showed 86% from 20 days to 40 days after anther inoculation. This tendency also exists in F1 hybrids. The frequency of green plant differentiation was high at callus age with 11-20 days from callus induction to callus transplanting. Albino appeared at callus age with 21-40 days. The frequency of green plant differentiation showed 77% within 10 days after callus transplanting, but albino showed 71% within 20 days after callus transplanting.