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Your Position :Home->Past Journals Catalog->2009年46 No.2

Genetic differentiation of Myzus persicae based on host plants revealed by using microsatellites
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Key Words:Myzus persicae, microsatellite marker, genetic diversity, genetic differentiation
Abstract:

Myzus persicae (Sulzer) is one of the most polyphagous and serious aphid pests in agriculture and horticulture. For detecting the genetic variation in aphid populations on different host plants, we analyzed the genetic structure and diversity of M. persicae populations from broccoli, peach tree and pepper, using five microsatellite loci. In all, 38 alleles were detected at the five microsatellite loci. The population from peach tree exhibited the highest allelic and genotypic diversity, which should be related to the aggregation of alleles and genotypes occurred when individuals return to peach tree for overwintering. Allelic frequency analysis indicated that significant differentiation existed between any two of the three populations from the three host plants. However, the genetic differentiation between peach population and pepper population was more remarkable than that between broccoli population and peach population. The results i
mply that the broccoli population is genetically deviated from the peach population and pepper population.



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