【摘要】 1981—1985年在人工接种的条件下,对1239份高粱品种资源,进行了抗丝黑穗病性鉴定。与此同时,用17个抗性不同的品种系,按照不完全双列杂交设计,进行了高粱对丝黑穗病的抗性遗传研究。结果表明,高粱对丝黑穗病的抗性遗传方式因品种而异。有的品种系具数量性状遗传特点,有的则具有质量性状遗传特点。抗病性属数量性状遗传的品种系,其抗性主要是受加性基因控制。更多还原

【Abstract】 During 1981-1985,1239 sorghum cultivars were tested for resistance to head smut under conditions of artificial inoculation.This work resulted in selection of some cultivars (lines) highly resistant and resistant to this disease.These cultivars may be valuable as source of resistance to head smut in sorghum breeding programs.Then,on the identification of resistance,seventeen cultivars (lines) with different degrees of resistance were used in the inheritable experiment designed with imcomplete diallel cross,from which seventy-two hybrid combinations were obtained.Studies on inheritance of resistance-to sorghum head smut were carried out.The result showed that different sorghum varieties were identified as possessing different ways of inheritance of resistance to head smut.Some varieties possess characteristic of quantitative character inheritance.While some varieties possess characteristics of qualitative character inheritance.Resistance of cultivarb (lines) of quantitative inheritance is mainly controlled by additive genes.更多还原