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对水稻品种间4个正、反交组合进行蛋白质含量的遗传研究,发现在其后代中含量是不同的。 F_2的蛋白质含量呈近于常态的连续分布,但其平均值并不等于双亲的中值,而是偏于接近中值的那个亲本。F_2的广义遗传力是39～78％,F_2与F_3之间的相关分别为r=0.515和r=0.635。可见,稻米蛋白质含量的遗传是由核基因所控制,F_2的分布情况与显性基因的存在很有关系。其次是遗传力在
Genetic studies on the protein content of four positive and negative crosses among rice cultivars showed that the content was different in their offspring. The protein content of F_2 showed a nearly normal continuous distribution, but the average value of F_2 was not equal to the median of parents, but rather to the parent close to the median. The general heritability of F_2 was 39-78%, and the correlation between F_2 and F_3 was r = 0.515 and r = 0.635, respectively. It can be seen that the inheritance of protein content in rice is controlled by nuclear genes, and the distribution of F_2 is closely related to the existence of dominant genes. Followed by heritability in