欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (17): 195-198.

所属专题： 小麦

• 植物保护 农药 • 上一篇    下一篇

2007年陕西、湖北和四川三省小麦叶锈菌苗期毒性分析

武延超 孟庆芳 杨文香 温晓蕾 刘大群   

  • 收稿日期:2009-05-22 修回日期:2009-06-21 出版日期:2009-09-05 发布日期:2009-09-05

Wu Yanchao1, Meng Qingfang1, Yang Wenxiang1, Wen Xiaolei2, Liu Daqun1   

  • Received:2009-05-22 Revised:2009-06-21 Online:2009-09-05 Published:2009-09-05

PDF (PC)

481

摘要：

采用40个鉴别寄主在苗期对2007年采自我国四川、湖北和陕西三省小麦叶锈菌菌株进行致病性鉴定及毒性基因频率分析。结果表明：2007年四川省主要致病类型为THTT，出现频率为11.1%；湖北省主要致病类型为THQT、THQS、THQR、THQN和PHSP，出现总频率为61.8%；陕西省主要致病类型为PHST和FHST，出现总频率为17.1%。三省小麦叶锈菌的群体结构组成复杂。毒性基因V9、V19、V24、V38、V39、V40、V41、V42、V43和V45在三省中的毒性基因频率均小于21%，其中V9、V24和V38的毒力频率为0，说明其对应的小麦抗叶锈病基因在小麦抗叶锈病育种中具有较高的利用价值；毒性基因V2c、V3、V3bg、VB、V11、V14a、V14b、V16、V25、V26和V33在三省中的毒性基因频率均大于70%，其对应的抗叶锈基因为无效抗叶锈基因。毒性基因V1、V2a、V15、V19、V28和V30的毒性基因频率在三省中存在较大差异。

关键词: 沼气发酵残留物, 沼气发酵残留物, 苹果, 产量, 品质

Abstract:

Collections of Puccinia triticina were obtained from rust-infected wheat leaves throughout ShanXi、HuBei and SiChuan provinces of China in 2007. Single uredinial isolates were derived from the collections and tested for virulence phenotype on 40 differential hosts. The most common phenotype was THTT in Sichuan province and its frequency was 11.1%; were the main pathotypes in Hubei province and the frequency of the five pathotypes THQT，THQS，THQR，THQN and PHSP were 61.8%; PHST and FHST were the main virulence phenotypes in Shanxi province and the frequency of the two pathotypes were 17.1%. The result of virulence frequency analysis indicated that the virulence frequency of V9, V19, V24, V38, V39, V40, V41, V42, V43 and V45 were lower than 21% in the three provinces, and the virulence frequency of V9, V24, V38 were 0, which suggested the corresponding resistance genes are effective resistance genes in wheat breeding. But the virulence frequency of V2c, V3, V3bg, V11, VB, V14a, V14b, V16, V25, V26 and V33 were above 70%, which suggested the corresponding resistance genes lost their resistance to the pathogen in the three provinces. The virulence frequency of V1、V2a、V15、V19、V28 and V30 showed obvious difference in three provinces.