http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
벼 雄性不稔性을 利用한 集團改良에 關한 硏究 Ⅰ. 벼 集團 能動的 循環改良育種體系의 提案
H. C. Choi(崔海椿),K. H. Kim(金光鎬) 한국육종학회 1984 한국육종학회지 Vol.16 No.3
Population improvement breeding schemes for rice using a genie male-sterile factor are outlined. The genetic male-sterility easily induced by irradiation or chemical treatment was inherited as a single recessive(msms) gene pair. The percentage of open-pollinated seeds on male- sterile plants in randomly intermating population of rice crosses are variable individually with diverse outcross ratio from 0.0% to above 30%, and also its average estimates of each population have the range from 3.7%-13.0%. A basic scheme is composited by four main flows of breeding procedures : intermating, new genes introduction, additional recurrent cycle, and pedigree or bulk nursery. Main purposes of this system are continuous accumulation of desirable genes into rice population and breakup of an undesirable tight linkage block. Modifications of the scheme and some problems relevant to this breeding flow are discussed.
水稻 遠緣交雜組合에 있어서 穎의 Phenol 着色濃度와 出穗性과의 關係
H.C. CHOI(崔海椿) 한국육종학회 1981 한국육종학회지 Vol.13 No.1
The genes controlling the darkness of phenol-stained color of rice hull are closely linked with the genes related to photosensitivity in remote crosses of rice. Consequently, yellowish brawn phenol-staining of hull can be used as a useful marker for selecting early-maturing and photoinsensitive individuals. There are a negative correlation between lengths of basic vegetative phase and photosensitive phase.
主成分分析 및 Cluster 分析을 利用한 油菜品種의 分類
H.C. CHOI(崔海椿),J.I. LEE(李正日) 한국육종학회 1979 한국육종학회지 Vol.12 No.3
Classification of Korean local and introduced rapeseed cultivars(Brassica napus L.) was carried out by using the principal component analysis and cluster analyses. Twenty six agronomic characters can be classified into two groups; one closely related to yield components, oil content, and undesirable fatty acids, the other related to maturity, plant height, and desirable fatty acids by cluster analysis with correlation coefficients among them. By using principal component analysis and clustering by taxonomic distances calculated with the first six principal components’ score of varieties, fifty six rapeseed cultivars were classified into five varietal groups. Meanwhile Korean rapeseed cultivars except “Woldongcho” were included in Group I, Japanese varieties were distributed into all varietal groups but most of them mainly including in Group I or Group IV. Most of Taiwan, North European, and Central European varieties were mainly distributed into Group V, Group I or V, and Group Ⅱ or Ⅲ, respectively. Also, these rapeseed cultivars can be classified into seven varietal groups with weighted variable group method (WVGM) using correlation coefficients between each varieties and into six varietal groups with weighted pair group method (WPGM) based on the Euclidean distances calculated from standardized data of quantitative agronomic characters. Results of the classification of rapeseed cultivars by WVGM were nearly coincident with the results by WPGM, but the results of classification using principal components analysis were slightly different from the results of the others.
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.
水稻 遠緣交雜集團에 있어서 登熟期黑色穎의 遺傳 및 Phenol 着色濃度와 出穗期와의 關係
H. C. CHOI(崔海椿),F. KIKUCHI(菊池文雄) 한국육종학회 1978 한국육종학회지 Vol.10 No.2
Inheritance of the phenol-reaction color of hull in some remote crosses of rice was controlled by single dominant gene and there was no segregating distortion by the hybrid sterility. In the cross of Josaengtongil×Minehikari, inheritance of black-hull at ripening stage was controlled by 3 complimentary genes and one of them was a gene controlling the phenol-staining of rice hull. Heading date was inherited by some complimentary or poly genes and lateness was dominance. The genes related to the darkness of phenol-reacted color of rice hull were inherited quantitatively and linked with a part of genes controlling the heading time of rice.