【摘要】 利用已知抗叶锈病基因的小麦近等基因系 (或单基因系 )作鉴别寄主 ,监测来自山西省 3个不同小麦生态区 11个县 (市 )的 92份叶锈标样。在发现的 2 7个致病类型 (毒性基因组合 )中 ,TRK ,TRT ,PHT ,THT出现频率分别为 19 6% ,9 8% ,6 5 % ,6 5 % ,为优势致病类型。对叶锈菌群体毒性基因频率分析结果表明 ,毒性基因V19,V2 4 ,V38的出现频率较低 ,分别为5 4 % ,16 5 %和 0 ,其对应的抗性基因可视为山西省小麦叶锈菌的有效抗病基因更多还原

【Abstract】 materials of Puccinia recondite f.sp. tritici from 11 counties or cities in 3 ecological areas of Shanxi were tested by using near isogenic lines(or monogenic lines) of wheat leaf rust resistance as differential hosts.The results indicated that the prevalent pathotypes were TRK,TRT,PHT and THT with the frequency of 19 6%,9 8%,6 5% and 6 5% respectively,among the 27 detected pathotypes.The analysis of virulence dynamics of Puccinia recondite f. sp .tritici showed that the frequencies of V19,V24 and V38 were 5 4%,16 5% and 0,respectively.It means that the wheat leaf rust could be effectively controlled by the corresponding resistance genes in Shanxi.更多还原