The identification of biotypes of Bemisia tabaci in Hubei Province
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Key Words：Bemisia tabaci,biotype,gene sequence,homology
Abstract： Mitochondrial cytochrome oxidase I (mtDNA COI) gene sequences were utilized to identify biotypes of Bemisa tabaci (Gennadius) in Hubei Province.Of the 720 bp COI sequences examined,those from populations in Dangyang,Xiantao,Tianmen,Jianli,Yichang and Wuhan had as much as 100% similarity.COI sequences of B.tabaci from these six sites were also 100% similar to those of the Q biotype from the USA and Hubei Province.COI sequences of specimens of a B. tabaci population from Zaoyang were 100% similar to specimens of the B biotype from Israel,Zhejiang and Hubei Province.I conclude that B. tabaci from Dangyang,Xiantao,Tianmen,Jianli,Yichang and Wuhan are of the Q biotype where those from Zaoyang are the B biotype.