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采用加性-显性-加加上位性及其与环境互作的遗传模型(ADAA模型),对8个陆地棉亲本(其中有6个机采棉品种)及其F1和F2的28个组合5个机采性状和单株皮棉产量的新疆阿拉尔和石河子2试点资料,进行了贡献分析。结果表明,5个机采性状对皮棉产量表型值的贡献变化范围为-20%～-14%;在显性贡献中,第一果枝高度对皮棉产量的贡献率最大(CRD=10%),其次是节间长度的贡献(CRD=8%),而霜前花率对皮棉产量有较大的抑制作用(CRD=-25%);霜前花率对皮棉产量的加加上位贡献率最大(CRAA=86%),其次是第一果枝节位(CRAA=24%)。霜前花率在特殊的环境中对皮棉产量表现为很大的显性正向贡献(CRDE=78%)和加加上位效应抑制作用。不同亲本5个机采性状对其皮棉产量的显性和加加上位效应贡献不同。5个机采性状对不同组合皮棉产量显性效应的贡献较小,霜前花率对皮棉产量的显性效应的贡献在2个地点的表现往往和单株皮棉产量在不同地点表现显性效应的性质(正或负)相一致,并且在5个机采性状中对皮棉产量的显性贡献是最大的。加加上位效应在皮棉产量的遗传中起着很重要的作用,而在8个亲本及其后代各组合的5个机采性状中,霜前花率可作为选择皮棉产量加加上位效应的主选性状。在不同的环境中,皮棉产量加加上位效应的主选机采性状随组合有所不同。
The genetic diversity of eight upland cotton cultivars (including six cottonseed cultivars) and their combinations of F1 and F2 were analyzed using additive-dominance-additive epistasis and their interaction with environmental factors (ADAA model) 5 machine-picked traits and single lint yield Xinjiang Alar and Shihezi 2 pilot data, the contribution of the analysis. The results showed that the contribution of five traits to the lint yield phenotype varied from -20% to -14%, and in the dominant contribution, the contribution of the first fruit branch height to lint yield was the highest (CRD = 10%) , Followed by the contribution of internode length (CRD = 8%), while the pre-frost flower rate had a greater inhibitory effect on lint yield (CRD = -25%); Maximum (CRAA = 86%), followed by the first branch (CRAA = 24%). Frost pre-fringe rates have a significant positive contribution to lint yield (CRDE = 78%) and jolt-up effects in a particular environment. The effects of five host traits of different parents on the dominant and additive effects of their lint yield were different. The contribution of 5 maize traits to the dominant effects of different combinations of lint yield was small. The contribution of pre-frost flower rate to the dominant effect of lint yield often showed a significant effect on the lint yield per plant at different sites (Positive or negative), and the dominant contribution to lint yield among the five maize traits was the largest. The upper effect of Gaga plays a very important role in the inheritance of lint yield. Among the five combinations of the eight parents and their offspring, the rate of frost before flowering can be used as the main effect for selecting lint yield plus host effect Optional traits. In different environments, the lint output of lint yield plus host effect varies with the combination.