| 短葶飞蓬云南三个种群的核型与等位酶分析 |
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| 引用本文： | 冯定霞,陈勃,党承林,王崇云.短葶飞蓬云南三个种群的核型与等位酶分析[J].云南植物研究,2002,24(6):754-758,768. |
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| 作者姓名： | 冯定霞 陈勃 党承林 王崇云 |
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| 作者单位： | 1. 西南林学院,云南,昆明,650224
2. 云南大学生态学与地植物学研究所,云南,昆明,650091 |
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| 摘 要： | 通过核型和等位酶分析，对短葶飞蓬（Erigeron breviscapus)种群遗传结构进行了较全面的研究。研究材料来自丽江，昆明，邱北，核型分析表明，这3个种群都为二倍体种群（2n=2x=18)，以丽江种群为例，短葶飞蓬核型为2n=2x=18=6m 10sm(2SAT) 2st,10种酶的等位酶分析表明，短葶飞蓬的遗传变异存在于种群内，种群间遗传一致度高（I=0.9172)，遗传距离小（D=0.0876)，遗传距离与空间距离大致成正相关。
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| 关 键 词： | 短葶飞蓬 云南 种群 核型 等位酶分析 遗传结构 |
| 文章编号： | 0253-2700(2002)06-0754-05 |
Karyotype and Allozyme Analyses of Three Populations of Erigeron breviscapus from Yunnan |
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| FENG Ding-Xia,CHEN Bo,DANG Cheng-Lin,WANG Cong-Yun.Karyotype and Allozyme Analyses of Three Populations of Erigeron breviscapus from Yunnan[J].Acta Botanica Yunnanica,2002,24(6):754-758,768. |
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| Authors: | FENG Ding-Xia CHEN Bo DANG Cheng-Lin WANG Cong-Yun |
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| Affiliation: | FENG Ding-Xia1,CHEN Bo1,DANG Cheng-Lin2,WANG Cong-Yun2 |
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| Abstract: | In this paper, the population genetic structure of Erigeron breviscapus in three population of Yunnan was studied by the karyotype analysis and allozyme analysis. Lijiang, Kunming and Qiubei populations were sampled. Karyotype analysis indicated that all the three populations are diplontic (2n=2x=18). The karyotype formula of Lijiang population is: 2n=2x=18=6m+10sm(2SAT)+2st. Ten allozyme analyses show that, the genetic variation exists within the populations. The genetic identities in the three populations are very high (I=0.9172),and the genetic distances are very small (D=0.0876).The genetic distances are positively related to the spatial distances. |
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| Keywords: | Erigeron breviscapus Karyotype Allozyme Population genetic structure |
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