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2017年, 第4卷 第1期
More than 250 Berberis species were recorded in China and 35 species of them were identified to be alternate (sexual) hosts for Puccinia striiformis West. f. sp. tritici Erikss. et Henn., a causal pathogen of wheat stripe rust. The existence of sexual reproduction of the rust under natural conditions in China was recently demonstrated, which playing roles in virulence variation of the pathogen and epidemics of wheat stripe rust. This combined pictures illustrated that wind-borne aeciospores was first derived from infected Berberis plants, then spread to wheat nearby the Berberis bushes and caused stripe rust infections on wheat at last. This study revealed a high heterozygosity of field isolate of P. striiformis f. sp. tritici for avirulence/virulence loci through sexual reproduction on alternate hosts.
(Yuan TIAN, Gangming ZHAN, Xia LU, Jie ZHAO, Lili HUANG, Zhensheng KANG, pp. 48–58)[展开] ...