摘要： 通过对原始菌样和单个夏孢子分离繁殖系的测定表明：内蒙古向日葵锈病流行区的病原菌生理小种种类为3号、2号及Lambrides描述的新分离物CL₁,CL₃和CL₄；各小种或分离物均分布在所有采集点，但以3号小种数量最大，约占90%以上，为优势生理小种。

关键词: 向日葵, 锈病菌, 生理小种

Abstract: The samples and single-uredinal isolates were tested. The results indicated that the types of race were race 3 and race 2,within Inner Mongolia sunflower rust prevalent region and some isolates were CL₁, CL₃ and CL₄ discribed by C. J. Lambrides in 1991. Race 3 covered over all collection sites,its proportion was up to 90%, so it was predominant race in the region. The other race and isolates also were discovered in nearly all collection sites and thier proportions were much low.

Key words: Sunflower, Puccinia helaccnthi, Physiologic race

中图分类号: 

• S435.655