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水稻白叶枯病菌(Xanthomonas campestris PV.oryzae)的致病类型有称之生理小种、病原型(致病型)或菌系。虽然叫法不一,但一致认为:病菌的致病类型在国与国,或一个国家的不同地区之间差异很大。菲律宾国际水稻研究所
Pathogenic types of Xanthomonas campestris PV.oryzae are called race species, pathogenic (pathogenic) or bacterial strains. Although the terms vary, they agree that the pathogenic types of germs vary widely from country to country or from region to region. Philippine International Rice Research Institute