论文部分内容阅读
用多基因抗大斑病自交系进行抗性遗传研究指出,双亲病级平均值,和 F_1病级呈高度显著正相关(r=0.925),与 F_2出现高抗株率(%)为极显著负相关(r=-0.914);F_1病级和 F_2高抗株率亦呈极显著负相关(r=-0.766)。单显性基因(Ht_1)自交系,在不同的遗传背景中,对 F_1传递的显性抗病程度有不同,在和水平抗性系杂交的 F_2代中,褪绿斑型植株的抗性在0～2级间发生分离。抗病育种主要是对抗性指标、选用亲本依据及组配方式几方面进行了研究。
The study of resistance inheritance using multi-gene resistant Daidai disease inbred lines indicated that the average level of parents’ disease had a highly significant positive correlation with the level of F_1 (r = 0.925), and the rate of high resistant plants with F_2 (R = -0.914). There was also a significant negative correlation between F_1 and F_2 strains (r = -0.766). In inbred lines with single dominant gene (Ht_1), the dominant resistance to F_1 was different in different genetic backgrounds. Among F2 generation crossed with horizontal resistant lines, the resistance of chlorotic spotted plants Separation occurs between 0 and 2 levels. Disease resistance breeding is mainly confrontational indicators, selection of parents based on the group and the way with several aspects of the study.