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雪腐镰刀菌 Fusarium nivale(Fr)Ces近年来发现在墨西哥、东非、南美和苏格兰等地是小麦、小黑麦叶枯病或叶斑病的病原。该菌引发关中小麦叶枯病是1961年发现的,当时未引起注意。随后发现此病在矮秆小麦上特别严重。随着矮秆品种的推广,现在已成为生产上的严重病害。为了给抗病育种提供理论依据,我们进行了该菌的生理分化研究。材料与方法(一)供试品种选用抗性较好的小偃6号、阿魁雷;抗性较差的郑引1号、秦麦1号和中间类型的季内罗索、72(4)1—3、78
Fusarium nivale (Fr) Ces, recently discovered in Mexico, East Africa, South America and Scotland, is the causative agent of wheat, barley leaf blight or leaf spot. The bacteria that caused Guanzhong wheat leaf blight were discovered in 1961, when it did not attract attention. The disease was subsequently found to be particularly severe on dwarf wheat. With the promotion of dwarf varieties, it has now become a serious production disease. In order to provide a theoretical basis for disease-resistant breeding, we carried out the physiological differentiation of the bacteria. MATERIALS AND METHODS (I) Xiaoyan 6 and Aguirre, which were relatively resistant, were selected for the test varieties; Zhengyin 1, Qinmai 1, ) 1-3,78