摘要： 对春谷15个杂交组合后代蛋白质含量的遗传特点进行了研究。结果表明,F₁呈倾母遗传,遗传表现比较复杂,F₂变异广泛,分布多数为单峰曲线,也有双峰曲线,并非所有组合都是正态分离,g₁为正值,呈正向倾斜。遗传以加性效应为主,也有显性作用。h_B²一般为46.16％～55.79％,△G为1.07％～1.83％,△G′为7.97％～14.07％。超亲现象普遍,有的组合超高含量株率较高,早期世代选择效果较好。F₂与中亲值和母本均呈极显著的正相关。

关键词: 谷子, 蛋白质含量, 遗传分析

Abstract: The hereditary characters of seed prtoein content in fifteen crosscombinations of spring foxtail millet (Setaria italics Beauv,)were studied,The results showed that F, had a higher hybrid vigor with a matroclinal inheritance, Types with non-dominance, complete positive or complete negative dominance were not found in these combinations, but the types with partially positive dominance amounted to 53,8%of the total while the types with superparental heterosis consisted of 23,1%.F progenies varied greatly and had single-peak distribution curves or double-peak distribution curves,Normal distribution tests revealed that F had a normal distribution with a small deviation for g:>0 .Nevertheless, not all of the mating groups exh bited normal segregation, Additive effects were found predominant in inheri-tance while dominant effects also existed, Generally, h愁of the protein content was about 46.16-55,7900, 4G was about 1,07-1.83 00. }G} was about 7, 97-14.07%。In these combinatons, superparent phenomena were widespread,and a great number of high protein individuals were found, Therefore, an early generation selection might lead to a good result, As F was highly significantly correlated with MP and the female parent, four principles for parent selection were suggested.

Key words: Foxtial millet (Setaria italica Beauv, Protein contenty, Genetic analysis