Occurrence overviews of cotton Verticillium wilt in Xinjiang
The occurrence degree of Verticillium wilt and the distribution of defoliating strains of Verticillium dahliae were investigated in main cotton planted regions of Xinjiang.In addition,the disease resistance type of main cotton varieties and the occurrence rule of Verticillium wilt were studied.The results showed that disease fields of Verticillium wilt accounted for 58.2％ in Xinjiang,and the fields with the disease index above 5.0 accounted for 28.1％.Defoliating strains of V.dahliae accounted for 37.3％ in Xinjiang.The Verticillium wilt resistance of main cotton varieties ‘Zhongmian 49’,‘Zhongmian 414’,‘2905’ is tolerant in Aksu,while there is a lack of anti-Verticillium wilt varieties in practice.In Aksu,cotton Verticillium wilt is happening earlier and much more seriously than last few years,it develops rapidly from late June to late July,and turns slowly at later stage due to the hyperthermia.
NETL
NSTL
万方数据
维普
