黑紫稻资源农艺性状的因子分析

Factorial Analysis of Agronomic Traits of Black and Purple Rice Germplasms

对 5 0个黑、紫稻种质因子分析表明 ,11个农艺性状可分为受 4个主因子控制的性状群。因子1为粒数因子 ,因子 2为谷草比因子 ,因子 3为穗数因子 ,因子 4为粒重因子。其中因子 1作用最大 ,超过总贡献的 1/ 3。提出了培育重穗型黑。

Factorial analysis of 50 black and purple rice germplasms showed that the 11 agronomic traits studied might be divided into four groups controlled by four principal factors that refered to the spikelets number factor,the ratio of grain to straw factor,the panicle number factor and the grain weight factor,respectively,the spikelets number factor makes the greatest contribution to yield.The breeding strategy of heavy ear black and purple rice are advanced in this paper.