高粱穗部主要性状与产量的相关分析

以相关分析法研究了27个高粱品种产量与6个穗部性状的相关关系.结果表明,6个因素中除二级枝梗数、穗长与产量有负相关外,其他4个因素均为正值.其中,千粒重、穗粒重、穗粒数均为大的正值,达到显著或极显著相关.通径分析表明,穗粒重对产量的直接作用最大,其次为穗粒数与千粒重.由此得出:优良的穗部性状应该是穗长适中,千粒重保持一般水平,有较高的穗粒重.对品种的穗粒重、穗粒数、千粒重进行选择,就可达到对高产品种的选择目的.

Correlative Analysis between the Major Characters of Sorghum Panicle and Yield

Twenty-seven varieties were studied the correlative relations between the yield and six characters of sorghum panicle. The result indicated that except the number of the second peduncle,the length of panicle were negatively related to the yield, the other four factors were positive. Path analysis showed the direct effect of the weight of panicle to the yield was the largest,Then the conclusion are: the excellent characters of panicle should be moderate panicle length, 1 000-grains weight at average level, a heavier weight of grains per panicle.So the selection to the weight of grains per panicle, the number of grains per panicle,1000-grains weight can achieve the selection of high-yield variety.