陆地棉产量性状的遗传分析

采用加性-显性与环境互作的遗传模型,分析陆地棉8个杂交亲本和F128个组合的7个产量性状的两年试验资料,估算各项遗传方并非分量和F1、F2的杂种优势.结果表明,产量性状受加性效应和显性效应共同控制,加性×环境各产量性状均极显著,铃重、衣分、籽指还受显性×环境的极显著影响,7项产量性状的广义和狭义遗传率均达到极显著水准.

Genetic Analysis for Yield and Its Components in Upland Cotton

Seven yield traits of 8 parents and their 28 F 1 crosses of upland cotton two years were analyzed by the genetic model of additive dominance and its interactions with environments by MINQUE(1) approaches. Genetic variance components and heterosis were estimated. The results indicated that all yield traits were mainly controlled by the additive effects and by dominant effects, additive by years interactions effects were significant for yield traits and dominance by years interaction effects for boll weight and lint percent and seed index. The broad and narrow sense heritability estimates were significance at 0.01 level for yield and its components. Heterosis over mid parent value based on population mean was observed in seven yield traits. Heterosis over better parent value based on population mean was observed in both seed cotton yield and F 1 lint yield and boll number.