陆地棉抗黄萎病性状遗传的初步研究

A Preliminary Study on the Inheritance of Resistance to Verticillium Wilt in Upland Cotton

４个陆地棉品种分做３个抗×感杂交组合，采用加性—显性遗传模型对黄萎病抗性进行遗传研究。结果表明，抗黄萎病性状适合加性—显性遗传模型，抗黄萎病基因之间既有累加作用，也有乘积性作用。３个组合基因的加性效应［ｄ］值均明显大于基因的显性效应［ｈ］值；组合间抗黄萎病性状的狭义遗传力差异较大。

The additivedominant model was used for genetic studies on resistance to verticilium willt in three R×S combinations from 4 upland cotton lines The results showed that: The heredity of resistance character to V wilt was consistent with the additivedominant model There were additive and nonadditive effects Additive effects of genes were obviously higher than that of dominance and narrow heritabilities of resistance to V wilt were considerably different among the experimental combinations