甘兰几个主要数量性状的同亲回归分析和应用

用甘兰自交系34822为共同亲本配制的五个杂交组合的F_1及其相应的亲本材料进行了同亲回归(c.p.r)分析.估算了外叶数、开展度、心柱高、单球重、球形指数(球宽/球高)五项数量性状的一般配合力、特殊配合力、广义和狭义遗传力、亲子相关系数及超亲优势等遗传参数.说明了甘兰育种工作对这些数量性状的选择和利用中应注意的问题,并对五个组合进行了评价.本文是在1980年试验的基础上,1981年重复二次试验取相同趋势的总结.

APPLICATION OF CANSTANT PARENT REGRESSION ANALYSIS IN SOME IMPOTANT QUANTITATIVE CHARACTERS OF CABBAGE

Five quantitative traits of cabbage were studied, including no. of leaves,length of central axis, head weight, rang of plant and index of head shape.Genetic parameters of 5 traits such as the coefficient of c. p. r., combining ability,heritability,etc.were estimated. Large S. C. A. were observed for no. of leaves and rang of plant. Large G. C. A. were observed for index of head shap and length of central axis.There is much correspondence between G. C. A. and S. C. A. of head weight.The results suggest that it is important to select a large weight head of cabbage inbreeding line as a good parent to produce hybrid. The parents and their crosses were evaluated on the bases of these genetic parameter estimates.