摘要
[目的]探究影响水稻超高产育种的相关性状。[方法]应用表型主成分分析法,对黑龙江省20个水稻品种9个产量相关性状进行了相关和聚类分析。[结果]水稻产量相关性状间存在着错综复杂的相关关系。在6个影响水稻产量的主因子中,功能叶因子和产量因子对水稻产量的累积贡献率为96.56%;20个水稻品种被归为3类,显示出遗传距离较近、遗传基础狭窄的特点。[结论]水稻超高产育种中应注意剑叶叶面积和结实率、千粒重的选择。
[ Objective ] The research aimed to study correlated traits in rice super high yield breeding. [ Method] Nine yield properties of 20 varieties from Heilongjiang provincial rice regional trial were analyzed with the method of correlation and cluster analysis. [ Result ] There was a complex relationship among yield properties. Six principal component factors affecting yield were selected. The cumulative contribution rate of factor of function leaf and factor of yield was 96.56 %. Twenty varieties could be classified into three groups according to genetic distance, showing near genetic distance and narrow genetic basis. [ Conclusion] Leaf area of the flag leaf, rate of seed and 1 000 grains weight should be particularly considered in rice super high yield breeding.
出处
《安徽农业科学》
CAS
北大核心
2008年第23期9925-9928,共4页
Journal of Anhui Agricultural Sciences
关键词
超高产育种
相关分析
主成分分析
聚类分析
Super high yield breeding
Correlation analysis
Principal component analysis
Cluster analysis
