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为探讨花生蛋白质和脂肪含量的遗传规律,指导以品质性状为目标的育种改良实践,应用研究数量性状的主基因+多基因混合遗传模型P1、P2和RILs(重组自交系)世代联合分析方法,以郑9001×郑8903构建的RIL群体为材料开展了花生蛋白质和脂肪含量的遗传模型分析。结果表明,该群体中花生蛋白质和脂肪含量存在广泛变异,表现超亲遗传现象,其频数分布呈正态分布特征,符合主基因+多基因遗传特点。蛋白质和脂肪含量的遗传均符合C-0模型即多基因加性遗传模型,受多基因加性遗传和环境作用。蛋白质和脂肪含量多基因遗传率分别为87.67%和45.81%,环境引起的变异分别是12.33%和54.19%。在进行花生蛋白质、脂肪性状的育种时应注重多基因的累积。
In order to explore the genetic law of peanut protein and fat content, and to guide the practice of breeding with the goal of quality traits, the joint generation of P1, P2 and RILs (recombinant inbred lines) The genetic model of peanut protein and fat content was analyzed with RIL population constructed by Zheng 9001 × Cheng 8903. The results showed that there was a wide variation of protein and fat content in peanut in this population, showing the phenomenon of super-progeny inheritance. The frequency distribution of peanut showed a normal distribution, which accorded with the genetic characteristics of main gene + polygene. The inheritance of protein and fat content are in line with the C-0 model, that is, the multi-gene additive genetic model, which is affected by polygenes and genetic and environmental effects. The polygene heritabilities of protein and fat content were 87.67% and 45.81%, respectively. The environmental variation was 12.33% and 54.19% respectively. In the peanut protein, fat trait breeding should pay attention to the accumulation of multiple genes.