摘要
广义遗传力分析结果表明:籼粳“桥梁”育种杂种后代的高结实率特性可以稳定地遗传,早代选择有效,从而有可能解决籼粳杂交因早代结实率太低而使优良植株落选的问题。通过亲本、F1各性状以及各性状杂种优势间的相关分析及通径分析结果表明:籼粳“桥梁”育种后代其它农艺性状的选择可以用常规的直接选择和间接选择方法,其中也存在着产量与品质之间的矛盾,但个别产量性状与品质性状之间有相互促进的可能。由于亲子相关密切,选用杂交方案时应考虑亲本的表现、育种的目标以及所要选育的品种类型。
Analysis of broad heritability showed that the high fertility of hybrid Progency inindica-japonica bridge breeding can be inherited and that selection was effective in early generations. Therefore, the problem that excellent Plant was eliminated for low fertility in early generation could be solved. Analysis'of correlation and path analysis among various characters of F_1 and analysis of heterosis indicated that the selection of other agronomic characters of indica-japonica bridge brecding may be treated as in conventional breeding. Although negative correlation was found between grain yield and quality in indica-japonica bridge breeding, Some individual characters of grain yield with quality could improve eaeh other through bridge breeding. The offspring parents relationship was significant in bridge breeding. Thus, lt was necessary that we should ccnsider parents characters, variety type and breeding objective during the designing for cross breeding Program.
出处
《吉林农业科学》
CSCD
北大核心
1989年第1期27-33,36,共8页
Journal of Jilin Agricultural Sciences
