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| 海南粗榧(Cephalotaxus mannii Hk.f.) 5个种群遗传多样性及分化研究 | |
| 引用本文： | 向志强,刘玉成,杜道林.海南粗榧(Cephalotaxus mannii Hk.f.) 5个种群遗传多样性及分化研究[J].武汉植物学研究,2001,19(3):220-224. |
| 作者姓名： | 向志强 刘玉成 杜道林 |
| 作者单位： | 1. 怀化师范专科学校生物系, 2. 西南师范大学生命科学系, 3. 海南师范学院生物系, |
| 基金项目： | 国家自然科学基金资助项目(39660018)。 |
| 摘 要： | 采用垂直板型聚丙烯酰胺凝胶电泳测定了海南粗榧5个种群遗传多样性和遗分化程度。结果表明：海南粗榧种群遗传多样性水平较低，多态位点比率P＝0．33，等位基因平均数A＝1．33，平均期望杂合度为He=0．135，观察杂合度为Ho＝0139。种群间遗传分化程度较低，基因分化系数Gst=0.123，种群间遗传一致度和遗传距离的均值分别为0．9719、9．0288。黎母山种群与其它种群分化最大，其原因可能与传粉时盛行的风向有关。 |
| 关 键 词： | 海南粗榧 遗传多样性 种群分化 |
| 文章编号： | 1000-470X(2001)03-0220-05 |
| 收稿时间： | 2000-9-13 |
| 修稿时间： | 2001-5-20 |
Genetic Diversity and Population Differentiation of Cephalotaxus mannii Hk.f.Populations |
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| XIANG Zhi-Qiang,LIU Yu-Cheng,DU Dao-Lin.Genetic Diversity and Population Differentiation of Cephalotaxus mannii Hk.f.Populations[J].Journal of Wuhan Botanical Research,2001,19(3):220-224. | |
| Authors: | XIANG Zhi-Qiang LIU Yu-Cheng DU Dao-Lin |
| Institution: | 1. Department of Biology, Huaihua Teachers College, Huaihua, Hunan 418008, China;2. Department of Life Science, Southwest China Normal University, Chongqing 400715, China;3. Department of Biology, Hainan Teachers College, Haikou 571158, China |
| Abstract: | Genetic diversity and population differentiation among 5 Cepha lotaxus mannii Hk.f.populations were investigated using the assay of vertical slab polyacrylamide gel electrophoresis.Cephalotaxus mannii Hk.f.maintained relatively low level of genetic variation with P =0 33, A =1 33, He =0 135 and Ho =0 139.Genetic differentiation ( Gst ) was low among populations, Gst was 0 123,and the means of genetic identity and genetic distance were 0 9719 and 0 0288 respectively.The greatest differentiation between Mt.Limu population and others may be attributable to the prevalent wind direction in the season of pollination. |
| Keywords: | Cephalotaxus mannii Hk f Genetic diversity Population differentiation |
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