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利用抗黄萎病棉花种间渐渗系冀79作父本,高感病陆地棉品系1096作母本,配制杂交组合。感病对照、亲本及F1、F2在田间混生病圃鉴定。对亲本、F1及F2分离群体的抗性表现进行调查、统计,分析该抗源抗黄萎病性状的遗传方式,结果表明,该抗源抗性是由1个显性抗(耐)病基因和2个加性基因共同起作用,其中加性基因起主要作用。并且2个加性基因是独立遗传的,当2个加性基因同时存在并且纯合时,植株表现为高抗;当2个加性基因同时存在并且杂合时,植株表现为抗病;当只有1个加性基因存在时,不论纯合还是杂合,植株都表现为耐病;当2个加性基因不存在时,植株表现为感病。
In this experiment, the crosses of resistance to Verticillium dahliae, interspecific introgression line Hebei 79 were used as the male parent and the high susceptible upland cotton line 1096 as the female parent to prepare the hybrid combination. Susceptible control, parents and F1, F2 identified in the field mixed disease nursery. The resistance performance of parents, F1 and F2 segregating populations were investigated. The genetic patterns of the resistance to Verticillium wilt resistance were statistically analyzed. The results showed that the resistance to the resistance to Verticillium wilt was determined by one dominant resistance gene And two additive genes work together, in which the additive gene plays a major role. The two additive genes were independently inherited. When two additive genes were co-existed and homozygous, the plants showed high resistance. When two additive genes were co-existed and heterozygous, the plants showed disease resistance. Only one additive gene exists, whether homozygous or heterozygous, the plants showed resistance to disease; when two additive genes do not exist, the plant showed a sense of disease.