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一粒小麦是普通小麦抗性改良的宝贵资源。本研究对24份一粒小麦分别进行了白粉病和条锈病混合菌种苗期接种鉴定,进一步分别用一套白粉病菌菌株(15个)对2份乌拉尔图小麦和条锈病菌小种(21个)对1份栽培一粒小麦进行接种鉴定,其中乌拉尔图小麦UR206能抵抗所有供试白粉菌菌株,UR204除对白粉菌菌株E11感病外,对其余菌株表现抗性;栽培一粒小麦MO205对不同条锈菌小种表现出不同的抗性反应,研究表明乌拉尔图小麦UR206、UR204和栽培一粒小麦MO205分别含有与已知抗白粉病和抗条锈病基因不同的新基因。对乌拉尔图小麦UR204、UR206和栽培一粒小麦MO205分别进行抗白粉和条锈病基因的遗传分析,结果表明乌拉尔图小麦UR204和UR206分别含有一对显性抗白粉病基因,栽培一粒小麦MO205含有两对独立遗传的显性抗条锈病基因。
A grain of wheat is an invaluable resource for the improvement of common wheat. In this study, twenty-four wheat cultivars were inoculated with the mixed-fungus and powdery mildew of the powdery mildew and stripe rust respectively. Two strains of powdery mildew (15) One) cultivated a wheat inoculation identification, including Urals diagram wheat UR206 resistant to all tested powdery mildew strains, UR204 in addition to powdery mildew strain E11 susceptible, the other strains showed resistance; cultivate a wheat MO205 The results showed that the Ural map wheat UR206, UR204 and the cultivated one wheat MO205 contain new genes different from the known genes of resistance to powdery mildew and stripe rust respectively. Genetic analysis of the genes for resistance to white powdery mildew and stripe rust in Ural plots of wheat UR204, UR206 and cultivated monocotyledon wheat MO205 respectively showed that the Ural plots of wheat UR204 and UR206 contained a pair of dominant powdery mildew resistance genes, respectively, Two pairs of independently inherited dominant stripe rust genes.