小麦新品种数量性状的典型相关与通径分析

通过对2010—2011年河南省小麦品种区试冬水I组15个参试小麦品种的植株生育性状、产量因素性状及产量的典型相关与通径分析,结果表明:根据产量因素性状与产量的相关性,选取有效穗多、穗粒数多、千粒重高的性状是选育高产小麦的有效途径,此与实践经验相吻合。根据植株生育性状与产量因素性状的相关性,在合理密植的基础上,选取生育期偏短、植株偏低、分蘖力强、成穗率高的性状,可分别通过增加有效穗、穗粒数及千粒重,选育出高产小麦新品种。

Analysis of Canonical Correlation and Path on Quantitative Characters of New Wheat Varieties

The analysis of canonical correlation and path was applied to study 15 testing wheat varieties which had experimented in Henan 2010-2011 wheat varieties regional test winter water Group I,with plant growing characters,yield factors characters and yield in all included.The result showed that according to the correlations of yield factors characters and yield,selecting the plant characters of more effective spikes,more grain number per spike and high thousand grain weight.It was an effective way of high yield wheat selective breeding.Which was idantical with praltical experience.According to the correlations of plant growing characters and yield factors characters,and on the basis of rational planting density to select the plant characters of bear period shorten,lower plant height,stronger tillering ability and higher earbering tiller percentage,so the high yield wheat new varieties can be selective bred by increasing effective spikes,grain number per spike and thousand grain weight respectively.