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用7个蛋白质含量不同的品种,以不完全双列杂交的交配模式配成12个F1,对大麦籽粒蛋白质及其四种组分含量这五个性状的遗传参数进行了研究。结果表明,醇溶蛋白含量主要由加性效应控制,蛋白质和谷蛋白含量主要由非加性效应控制;球蛋白和清蛋白含量是由加性和非加性效应共同控制的,但对不同的性状,二者所起的作用是不等的。各性状的遗传力差异较大,广义、狭义遗传力的变幅分别为57.42%~96.36%和17.24%~67.26%。对于以加性效应为主的性状,可以利用双亲的一般配合力总效应来预测F1的表现,其可靠程度与一般配合力方差占遗传方差的百分率密切相关(rs=0.9246**)。5个性状间遗传相关均不显著,因此,间接选择是不可靠的。此外,还对遗传进度的估算方法进行了讨论。
Seven F1 cultivars with different protein content and incomplete diallel cross were used to study the genetic parameters of barley grain protein and its four components. The results showed that the content of gliadin was mainly controlled by the additive effect, and the content of protein and gluten was mainly controlled by the non-additive effect. The content of globulin and albumin was jointly controlled by additive and non-additive effects, but different Traits, the role played by the two is not the same. The heritability of each trait is quite different. The amplitudes of generalized and narrow heritability are respectively 57.42% ~ 96.36% and 17.24% ~ 67.26%. For additive trait-based traits, the general effect of general combining ability of parents can be used to predict the performance of F1. The reliability of F1 is closely related to the percentage of general combining ability variance (rs = 0.9246 **). No significant correlation was found between the five traits, so indirect selection was not reliable. In addition, the method of estimating genetic progress is discussed.