Scientia Agricultura Sinica ›› 2006, Vol. 39 ›› Issue (8): 1571-1580 .

• PLANT PROTECTION • Previous Articles     Next Articles

Genetic Differentiation of Different Geographical Populations of Bemisia tabaci (Gennadius) Complex

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  1. 中国农科院蔬菜花卉所
  • Received:2005-09-15 Revised:1900-01-01 Online:2006-08-10 Published:2006-08-10

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Abstract: Bemisia tabaci(Gennadius) is a species complex which includes different geographical populations with genetic differentiation. The recent progress on the genetic differentiation of various geographical populations of B.tabaci complex has been introduced. The genetic differentiation has been further analyzed based on the sequences of mtDNA COI and rDNA ITS1 recorded in the world's GenBank. Five groups are defined based on mtDNA COI and rDNA ITS1, including the Asia group, America group, Africa group, Australia group and Biotype B/Mediterranean/Middle Eastern/Northern Africa/Biotype Ms group. There are several ungrouped geographical classifications, such as the Uganda population, Ivory Coast population and Taiwan population. Geographical isolation may be the most important factor that contributed to the genetic differentiation of various geographical populations of B.tabaci. Many populations with biological advantages invaded new regions and caused severe economic losses within human activity. It is necessary to strengthen the research of B.tabaci biotype to prevent the spread of invaded populations and the invasion of potentially dangerous populations.

Key words: Bemisia tabaci Gennadius, Geographical populations, mtDNA COI, rDNA ITS1, Genetic differentiation

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