| 新疆额尔齐斯河流域苦杨与欧洲黑杨遗传多样性分析 |
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| 引用本文： | 郑书星,张建国,何彩云,保尔江,段爱国,曾艳飞,赛力克.新疆额尔齐斯河流域苦杨与欧洲黑杨遗传多样性分析[J].林业科学研究,2014,27(3):295-301. |
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| 作者姓名： | 郑书星 张建国 何彩云 保尔江 段爱国 曾艳飞 赛力克 |
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| 作者单位： | 中国林业科学研究院林业研究所, 林木遗传育种国家重点实验室, 国家林业局林木培育重点实验室, 北京 100091;中国林业科学研究院资源昆虫研究所, 云南 昆明 650224;中国林业科学研究院林业研究所, 林木遗传育种国家重点实验室, 国家林业局林木培育重点实验室, 北京 100091;中国林业科学研究院林业研究所, 林木遗传育种国家重点实验室, 国家林业局林木培育重点实验室, 北京 100091;阿勒泰地区林业科学研究所, 新疆 阿勒泰 836500;中国林业科学研究院林业研究所, 林木遗传育种国家重点实验室, 国家林业局林木培育重点实验室, 北京 100091;中国林业科学研究院林业研究所, 林木遗传育种国家重点实验室, 国家林业局林木培育重点实验室, 北京 100091;阿勒泰地区哈巴河县林业局, 新疆 哈巴河 836700 |
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| 基金项目： | 中央公益性科研院所基本科研业务费专项资金项目“额尔齐斯河天然杨树种群遗传多样性研究”（201004035） |
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| 摘 要： | 应用SSR标记技术,对新疆额尔齐斯河流域河谷分布的苦杨(Populus laurifoli)和欧洲黑杨(Populus nigra)天然居群的遗传多样性和遗传分化进行了研究。结果显示:苦杨和欧洲黑杨的天然居群具有较高的遗传多样性,且苦杨明显高于欧洲黑杨。与苦杨居群相比,欧洲黑杨居群间基因流较高,居群间的遗传分化程度较小,变异主要源于居群内。苦杨和欧洲黑杨居群内的杂合度较高,各个居群的各项遗传参数都要小于物种水平。苦杨和欧洲黑杨均偏离Hardy-Weinberg平衡,表现为杂合子过量的现象。
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| 关 键 词： | 苦杨 欧洲黑杨 遗传多样性 遗传分化 |
| 收稿时间： | 2013/11/28 0:00:00 |
Genetic Diversity of Populus laurifolia and Populus nigra Along Erqis River |
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| ZHENG Shu-xing,ZHANG Jian-guo,HE Cai-yun,BAO Er-jiang,DUAN Ai-guo,ZENG Yan-fei and SAI Li-ke.Genetic Diversity of Populus laurifolia and Populus nigra Along Erqis River[J].Forest Research,2014,27(3):295-301. |
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| Authors: | ZHENG Shu-xing ZHANG Jian-guo HE Cai-yun BAO Er-jiang DUAN Ai-guo ZENG Yan-fei and SAI Li-ke |
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| Institution: | State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224, Yunnan, China;State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;Altai Research Institute of Forestry, Altai 836500, Xinjiang, China;State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;Habahe County Forestry Bureau, Habahe 836700, Xinjiang, China |
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| Abstract: | The genetic diversity and population genetic differentiation of Populus laurifolia and P.nigra distributed along Erqis River were studied by using nuclear microsatellite markers (SSR). The results showed that the P. laurifolia and P. nigra populations had an abundant genetic diversity, especially P. laurifolia. Higher gene flow (Nm=10.0585) was found in P.nigra than in P.laurifolia, which prevented the genetic differentiation among populations. It was found that 97.57% genetic variation resulted from intra-populations. In addition, there existed a higher heterozygosity in P. laurifolia and P. nigra populations, and many genetic coefficients of populations were smaller than those of species. The inbreeding coefficients among populations were negative, indicating that all SSR loci investigated were deviated from Hardy-Weinberg equilibrium at the level of individuals and populations, which suggested that excess of heterozygotes was present in the population. |
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| Keywords: | Populus laurifolia Populus nigra genetic diversity genetic differentiation |
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