摘要： 粟蛋白质含量的遗传是由数量性状基因控制的,不受细胞质基因影响.高×低的杂交后代蛋白质含量呈连续分布,并偏向低亲.蛋白质含量的基因效应存在加性效应、加性效应之间的互作效应以及加显效应之间的负向互作效应,并完全符合双基因互作模型.在所研究的两个组合中,蛋白质含量的广义遗传力分别为53.8%和62.9%,狭义遗传力不显著,分别为28.2%和47.2%.

关键词: 粟, 蛋白质, 基因效应, 遗传力

Abstract: The inheritance of protein content in Setaria italica (L. Beav) is controledby the quantity charactor, but not by cytogene. If the parent with high protein content is crossed with the parent with low protein content, the protein content distribution of F1S, F2S, B1S, B2S is Consecutive and, tends to the latter. There are positive additive effect, additive? additive effect and negative additive ? dominance effect in the gene effect of protein content. It accordswith the modle of double-gene interaction. The broad heritabilities of the pro-tein content in the two crosses are 53.8% and 62.9% respectively, and the ne-rrow heritabilities are 28.2% and 47.2% respectively.

Key words: Foxtail Millet (Setaria italica Beauv), Protein, Gene effect, Heritability