| 华东地区青冈种群的遗传多样性及遗传分化 |
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| 引用本文： | 陈小勇,王希华.华东地区青冈种群的遗传多样性及遗传分化[J].Acta Botanica Sinica,1997,39(2):149-155. |
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| 作者姓名： | 陈小勇 王希华 |
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| 作者单位： | 厦门大学生物系，华东师范大学环境科学系，华东师范大学环境科学系 厦门 361005 华东师范大学环境科学系，上海 200062。Current address:Department of Environmental Sciences，East China Normal University，Shanghai 200062.，上海 200062，上海 200062 |
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| 基金项目： | 国家自然科学基金(批准号 39370135) |
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| 摘 要： | 采用垂直板型聚丙烯酰胺凝胶电泳测定了华东地区6个青冈(Cyclobalanopsis glauca(Thunb.)Oerst.)种群的遗传多样性和遗传分化程度以及基因流。青冈种和种群水平都维持有较高的遗传多样性,期望杂合度分别为0.2252和0.2126,观察杂合度分别为0.1661和0.1771。种群间的遗传分化程度较低,分化度仅为5.6％,种群间的遗传一致度和遗传距离的均值分别为0.9729和0.0276。种群间的分化时间为1.4～27万年。基因流分别为4.21和20.49。
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| 关 键 词： | 等位酶 遗传多样性 遗传分化 基因流 青冈 |
GENETIC DIVERSITY AND DIFFERENTIATION OF CYCLOBALANOPSIS GLAUCA POPULATIONS IN EAST CHINA |
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| Authors: | Chen Xiao-yong |
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| Abstract: | Genetic diversity, genetic differentiation and gene flow among 6 Cydobalanopsis glauca (Thunb.) Oerst. populations in East China were investigated using the assay of vertical slab poly-aery lamide gel electrophoresis. C. glauca maintained relatively high level of genetic variation as compared with the average plant species. Expected heterozygosity at species and population level was 0.225 2 and 0.221 6 respectively, and observed heterozygosity were 0.166 1 and 0.177 1 respectively. Genetic differentiation ( GST) was low among populations. GST was 5.6% , and the means of genetic identity and genetic distance were 0.972 9 and 0.027 6 respectively. The divergence times among populations were from 14000 to 270000 years. The gene flow were 4.21 and 20.49 respectively . |
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| Keywords: | Allozyme Genetic diversity Genetic differentiation Gene flow Cyclobalanopsis glauca |
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