植株展开度、穗幅宽与小麦产量关系的研究

Relationship among Plot Spike Width, Plant Spread Angle and Yield in Wheat

对11个小麦品种(系)植株展开度、穗幅宽与产量性状的关系进行了研究。结果表明:植株展开度、穗幅宽与籽粒产量的表型和遗传呈极显著正相关。通径分析进一步表明,植株展开度、穗幅宽对产量的效应主要通过生物产量、收获指数和穗粒重而起作用,且这2个性状测定方法简单,可作为高产育种的参考指标。

The relationships among plot spike width, plant spread angle and yield traits in 11 wheat varieties (lines) were studied. The results showed that the phenotypic and genetic correlations among plot spike width, plant spread angle and yield were all positively significant at 1% level. Path analysis showed that the total effect of plot spike width and plant spread angle on yield was basically determined by biomass, harvest index and spike grain weight. Plot spike width, plant spread angle could be regarded as markers for selecting in high yield breeding.