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利用黄瓜抗病品种‘长春密刺’和感病品种‘津研四号’构建的6个世代对枯萎病抗性基因进行遗传分析。结果表明,抗性遗传符合Mather的加性—显性遗传模型,抗性遗传组成成分以加性遗传为主,部分不完全正显性,显性作用的效应不等。抗病性由核基因控制,双亲基因分布属非集中分布类型,控制抗病性的加性基因至少有1个,广义遗传力为42.55%,狭义遗传力为38.75%,育种中采用常规有性杂交育种方法比杂种优势育种方法更有效。
Genetic analysis of Fusarium wilt resistance genes was carried out in six generations of cucumber cultivars ’Changchunmihijie’ and susceptible cultivar ’Jinyin No.4’. The results showed that the inheritance of resistance was in accordance with Mather’s additive-dominance genetic model. The inheritance of genetic components of resistance was dominated by additive genetics. Some of them were not completely dominant, and the dominant effects did not. The disease resistance was controlled by nuclear gene, and the distribution of parents was non-concentrated distribution type. At least one additive gene controlling disease resistance had a broad sense heritability of 42.55% and narrow heritability of 38.75% Hybrid breeding methods are more effective than heterosis breeding methods.