山西省小麦不同生态区叶锈菌群体毒性研究

Study on virulence genes of population of Puccinia recondtia f．sp．tritici in different wheat ecological areas of Shanxi

摘要: 研究分析山西省小麦叶锈菌群体的毒性基因频率结果表明，毒性基因V19、V24和V38出现频率较低，分别为5.8％、11.3％和0.0％，其对应抗性基因可视为山西省小麦叶锈菌的有效抗病基因。在所发现的43个致病类型(毒性基因组合)中THT、TRK、TRT、THK和PHT出现频率居前5位，分别为17.8％、14.4％、11.0％、8.2％和7.5％，为山西省目前小麦叶锈病的优势致病类型。

Abstract: The virulence gene frequencies of population of Puccinia recondita f．sp．tritici of wheat in Shanxi Province were analyzed．The results indicate that the appearances of virulence genes of V19，V24 and V38 are lower with the frequencies of 5.8％，11.3％ and 0.0％ respectively．Their corresponding resistant genes may be used as effective resistant genes．Among the 43 detected pathotypes ，the frequencies of THT，TRK，TRT，THK and PHT are 17.8％，14.4％，11.0％，8.2％，7.5％ respectively，and they are prevailing pathotypes of Puccinia recondita f. sp．tritici in Shanxi Province at present．