摘要
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 F1 2 8个组合的 7个产量性状的两年试验资料 ,估算各项遗传方差分量和 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。杂种优势分析 ,各产量性状均具有极显著群体平均优势 ,籽棉和 F1 皮棉产量、单株结铃数具有极显著群体超亲优势。
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.
出处
《作物学报》
CAS
CSCD
北大核心
2002年第4期533-536,共4页
Acta Agronomica Sinica
基金
本文由国家"863"(2 0 0 1AA2 410 81)项目资助。
关键词
陆地棉
产量性状
遗传分析
Upland cotton
Yield and its components
Genetic analysis
