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对包含不育系、中籼稻恢复系、粳稻恢复系和常规粳稻等不同类型在内的175份水稻种质进行水稻黑条矮缩病的自然诱发鉴定,同时调查粳稻条纹叶枯病的发病率,通过聚类分析等方法进行抗感分类和评价。结果表明:水稻黑条矮缩病与条纹叶枯病呈相互独立的遗传关系;不同基因型水稻种质对黑条矮缩病的抗性存在极显著差异,可分为抗/高抗、中抗、中感、感和高感等5种类型,三系早籼稻不育系基本为感或高感型,绝大多数的中籼稻恢复系为抗病型,通过籼粳杂交培育的粳稻恢复系基本为感或中感型,而常规粳稻中分布有抗、中抗、中感、感和高感的不同基因型。筛选抗性种质,加以创新和改良,可有效开展水稻黑条矮缩病抗性育种应用研究。
A total of 175 rice germplasms including CMS lines, CMS lines, japonica restorer lines and conventional japonica rice varieties were identified by natural induction of rice black-streaked dwarf disease. At the same time, the incidence of rice stripe blight , Through clustering analysis methods such as anti-susceptibility classification and evaluation. The results showed that the rice black-striped dwarf disease and the striped leaf blight were independently and genetically related to each other. The resistance of different rice genotypes to black-streaked dwarf disease was significantly different and could be divided into resistance / high resistance, medium Resistance, medium feeling, high sense and so on. Three types of indica rice CMS lines were mostly susceptible or highly susceptible. Most of the indica rice restorer lines were resistant to disease, and japonica rice cultivated by cross between indica and japonica was recovered Department of the basic sense or sense, and conventional japonica rice distribution in the anti-resistance, moderate resistance, flu, flu and sense of different genotypes. Screening of resistant germplasm, to be innovative and improved, can effectively carry out the research of rice black streak resistance disease breeding.