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本文以格里芬双列杂交模式Ⅱ设计,分析了高梁籽粒粗蛋白质含量及其4种组份和赖氨酸、色氨酸含量的配合力与杂种优势。结果表明,粗蛋白、清蛋白、球蛋白、谷蛋白、醇溶谷蛋白、赖氨酸含量等6个品质性状的σ_(gca)~2和σ_(sca)~2均达1％或5％显著平准,受加性和非加性基因效应的共同作用,其中加性基因效应作用占优势;色氨酸含量σ_(gca)~2达1％显著平准,但σ_(sca)~2不显著,其表现仅与加性基因效应有关。黑壳小关东青(朝阳)和关东青(昭盟)两个品种在粗蛋白、清蛋白、球蛋白、谷蛋白及赖氨酸和色氨酸含量上表现了相对较高的GCA效应和较低的SCA方差,在醇溶谷蛋白上表现了较低的GCA效应,是蛋白质改良杂优育种的理想材料。对7个品质性状的杂优分析表明,利用其F_1显性优势有一定困难;醇溶谷蛋白和谷蛋白的中亲优势与粗蛋白的中亲优势有较密切的关系。
In this paper, we designed the Griffin Diplotype Ⅱ hybrid model to analyze the sorghum grain crude protein content and its four components and lysine, tryptophan content of the combining ability and heterosis. The results showed that the σ_ (gca) ~ 2 and σ_ (sca) ~ 2 of 6 quality traits such as crude protein, albumin, globulin, gluten, prolamin and lysine all reached 1% or 5% The effect of additive gene effect was predominant, and the content of tryptophan σ2 (gca) ~ 2 was significantly lower than 1%, but sigma (sca) ~ 2 Not significant, its performance is only related to additive gene effect. The two cultivars of Kaohsiung Kanto (Chaoyang) and Kanto (Zhaomeng) showed relatively high GCA effects in crude protein, albumin, globulin, gluten, lysine and tryptophan Low SCA variance, which shows low GCA effect on prolamin, is an ideal material for improved heterozygous breeding of protein. Heterosis analysis of seven quality traits showed that it was difficult to utilize its dominant F_1 phenotype. The pro-parental advantages of prolamine and gluten were closely related to the parental propensity of crude protein.