广亲和性品种(WCV)在籼粳杂交育种中利用的再探讨

FUTHER EXPLORATION OF APPLICATION OF ON WIDE COMPA TIBILITY VARIETY (WCV) IN CROSS-BREEDING BETWEEN INDICA AND JAPONICA

摘要:

通过F₁、F₂、F₃代结实率比较以及F₂、F₃代结实率的相关分析, F₃株系的结实率变异情况分析认为: WCV参予籼粳杂交, 在显著提高F₁、F₂代结实率的同时, 对高结实率的选择效果以及结实率的稳定速度都明显强于籼粳单交组合。
F₃株系的株高和抽穗期变异情况分析表明: 结实率之外的性状分离状况因控制该性状的遗传基础不同而有差别, 简单基因控制的性状的稳定速度不一定会因WCV的参予而加快, 而多基因控制的性状则可能因WCV的参予而使籼粳杂交后代的稳定速度加快。

Abstract:

Analysis of fertility of F₁, F₂, and F₃, correlation between F₂’s fertility and F₃’s fertility and variation of fertility of F₃ lines indicated that WCV could improve selective effect for high fertility and stable extent of offspring’s, with increasing significantly fertility of F₁ and F₂, as it was involved in indica-japonica cross.
Analysis of variation of plant height and ear-date showed that seperative ranges of these characteristics were different because of their different genetic basis.Stable rate for characteristic controled by olig-gene could not speed up, and at those controled by poly-gene cold speed up as WCV was used.