水稻品种产量性状的遗传相关及通径分析

通过对水稻品种的几个主要产量性状的遗传相关和通径分析表明,结实率、每穗实粒数、穴穗数与产量间有较高的遗传相关和通径系数。在选育水稻新品种中,应在稳定千粒重和较高结实率的基础上,把穗实粒数和穴穗数作为重点选择指标,可望选育出高产水稻品种。

Analyze on Genetic Correlation and Path of Rice Yield

The genetic correlations and paths of main yield of several rice varieties were analyzed.The result indicated there were more genetic correlation and higher path coefficient between yield and seeding rate, amount of ripened grains per panicle, the amount of panicles per hill. On the new variety select, basing on stable weight of one thousand grains and higher rate of seeding , make the amount of ripened grains and the amount of panicles per hill as the important index for select have hope to breed the rice variety of high yield.