Projection of a new method for linkage analysis.

[摘要] For linkage analysis of genes especially of quantitative characters, a new possible method is suggested. This may be called "One chromosome-method", and consists of crossing of two varieties, successive backcrossing to one parent and selfing, leading to a formation of a recovered line with one pair of chromosomes from the non-recurrent parent and all the other pairs of chromosomes from the recurrent parent. If we cross these plants to the recurrent parent and self the F1 plants, the coming F2 plants may separate into three groups: one homozygous sirnilar to the recurrent parent, one heterozygous similar to F1 and one homozygous similar to the recovered line in a ratio of 1:2:1. Precise comparison of the two homozygous groups may reveal the linkage relations of genes locating on the specific chromosome pair. This analysis may especiauy be avaiiable to animals in which crossing-over does not occur in the heterogametic sex.

[学科分类] 农业科学（综合）