The Genetic Diversity of Half-sib Family Progenies of Populus (Section Leuce) in Altai of Xinjiang

ZHENG Shu-xing; ZHANG Jian-guo; DUAN Ai-guo; HE Cai-yun; BAO Er-jiang; WANG Jian

Ninety progenies representing three half-sib families of Leuce (Populus alba L., Populus canescens (Ait.) Smith, and Populus tremula L.) were analyzed by using microsatellite to study the genetic diversity. 58 alleles and 112 genotypes were identified based on 12 SSR primers. The percentage of polymorphic loci, the Nei's genetic diversity index and Shannon information index were 100%, 0.648 5 and 1.234. The coefficient of gene differentiation was 0.337 1, which indicated 66.29% of genetic variation resided within the progenies of species. The results from cluster analysis showed that there was abundant genetic variation among the three Leuce species, the genetic distance among species ranged from 0.386 3 to 1.869 and Populus canescens had the most genetic variation.

1. Research Institute of Forestry, Chinese Academy of Forestry, State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Breeding and Cultivation, State Forestry Administration, Beijing 100091, China

2. Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650224, Yunnan, China

3. Aletai Research Institute of Forestry, Aletai 836500, Xinjiang, China

Received Date: 2009-06-09

Accepted Date: 2013-03-10

Abstract: Ninety progenies representing three half-sib families of Leuce (Populus alba L., Populus canescens (Ait.) Smith, and Populus tremula L.) were analyzed by using microsatellite to study the genetic diversity. 58 alleles and 112 genotypes were identified based on 12 SSR primers. The percentage of polymorphic loci, the Nei's genetic diversity index and Shannon information index were 100%, 0.648 5 and 1.234. The coefficient of gene differentiation was 0.337 1, which indicated 66.29% of genetic variation resided within the progenies of species. The results from cluster analysis showed that there was abundant genetic variation among the three Leuce species, the genetic distance among species ranged from 0.386 3 to 1.869 and Populus canescens had the most genetic variation.

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The Genetic Diversity of Half-sib Family Progenies of Populus (Section Leuce) in Altai of Xinjiang

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