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为了明确不同类型的酿酒高粱材料对西南地区丝黑穗病的抗性和促进抗丝黑穗病品种的选育,采用土壤接菌法对107份材料进行了丝黑穗病抗性鉴定;根据抗性鉴定结果,比较了酿酒高粱杂交组合与其亲本对丝黑穗病的抗性,并对供试菌种进行了致病力分析。结果显示:在感病对照恢1植株平均病株率为67.65%时,有13个不育系、6个保持系、10个恢复系、28个杂交组合的病株率为0,达免疫水平,其中,酿酒高粱不育系和杂交组合所占比例较大,分别为86.67%和75.68%;恢复系中免疫类型所占比例较小,为24.39%;常规品种和组合中无免疫类型;杂交高粱对丝黑穗病的抗性属显性遗传;泸州丝黑穗病菌具有较强的致病力。
In order to clarify the resistance of different types of sorghum material to the head smut and promote the breeding of resistance to head smut in the southwest of China, 107 samples were identified as head smut resistance by soil inoculation method. The results showed that the resistance to head smut was compared with that from the cross combination of sorghum and their parents, and the pathogenicity of the tested strains was analyzed. The results showed that there were 13 sterile lines, 6 maintainer lines, 10 restorer lines and 28 hybrid combinations with an average disease strain rate of 67.65% Among them, the proportion of sorghum CMS and hybrids accounted for a relatively large proportion of 86.67% and 75.68%, respectively. The percentage of immune types in the restorer lines was relatively small at 24.39%. There was no immune type in conventional varieties and combinations Sorghum resistance to head smut belongs to the dominant inheritance; Luzhou head smut has a strong virulence.