昆虫学报2011，Vol.54Issue(7)：820-827,8.
微卫星标记分析中国梨木虱种群的遗传多样性
Microsateliite marker analysis of genetic diversity of Cacopsylla chinensis(Yang et Li) (Hemiptera: Psyllidae) populations in China
摘要
Abstract
Cacopsylla chinensis (Yang et Li) is one of the main pests of pear. In order to estimate the genetic variability within populations and genetic differentiation among populations of C. chinensis at the molecular level, genetic diversities of 16 geographic populations of C. chinensis in China were analyzed with 7 microsatellite loci. The results showed that the number of effective alleles and the polymorphism information content (PIC) per locus were 2.2927 - 10.0610 and 0.5073 - 0.8735, respectively. The average expected heterozygosity of all C. chinensis populations was 0. 7876. The genetic distances between different populations were 0. 0951 -1.0139, the Nei's expected heterozygosity 0. 4771 -0.7892, and the Shannon information indexes 0.8396 - 1. 9989. The average value of inbreeding indexes (FST) and gene flow were 11.61％ and 2.2236, respectively. The results indicated that the seven microsatellite loci are of high polymorphism, C. chinensis in China keeps a low level of population genetic differentiation and high degree of gene flow, and genetic variability mainly exists between individuals within populations. The results provides some basic information on molecular biology for the development of effective control strategies of the psyllid.关键词
中国梨木虱/微卫星标记/地理种群/遗传多样性/基因流Key words
Cacopsylla chinensis/ microsatellite marker/ geographic population/ genetic diversity/gene flow分类
生物科学引用本文复制引用
孙洁茹,李燕,闫硕,张青文,徐环李..微卫星标记分析中国梨木虱种群的遗传多样性[J].昆虫学报,2011,54(7):820-827,8.基金项目
国家现代农业(梨)产业技术体系资助项目(CARS-29-08) （梨）
