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本文利用加性-显性与环境互作的遗传模型(ADE模型),分析8个陆地棉亲本及其F1在不同环境下的农艺和纤维品质性状,在估算遗传方差分量、遗传效应的基础上,分析各类性状间的遗传相关性,并预测F1和F2的杂种优势,为棉花杂种优势利用和新品种选育提供了较有价值的信息。研究表明,农艺与纤维品质性状的遗传主要受加性、显性和加性与环境互作效应控制。遗传相关分析表明,皮棉产量与纤维品质性状的显性相关系数值较大,利用杂种优势在早期世代可以得到协同改良,纤维品质性状间易实现协同改良。杂种优势分析表明,F1和F2的皮棉产量均具有显著的超亲优势,纤维品质性状的杂种优势不明显。
Based on the ADE model, the agronomic and fiber quality traits of eight Upland cotton parents and their F1 hybrids under different environments were analyzed. Based on the estimation of genetic variance components and genetic effects , Analyzed the genetic correlation among the traits, and predicted the heterosis of F1 and F2, which provided valuable information for the utilization of cotton heterosis and selection of new varieties. Studies have shown that the inheritance of agronomic and fiber quality traits is mainly controlled by additive, dominant and additive effects and environmental interactions. Genetic correlation analysis showed that the lint correlation coefficient of lint yield and fiber quality traits was large, synergistic improvement could be obtained by using heterosis in early generations, and the synergistic improvement of fiber quality traits was easily achieved. Heterosis analysis showed that the lint yield of F1 and F2 all had significant super-parents superiority, and the heterosis of fiber quality traits was not obvious.