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ISSR Analysis of Genetic Diversity of Jatropha curcas L.
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF APPLIED & ENVIRONMENTAL BIOLOGY
- Issue:
- 4
- DOI:
- 10.3321/j.issn:1006-687x.2007.04.005
- Key Word:
- 麻疯树;ISSR;遗传多样性;遗传结构;育种
Abstract： 采用ISSR分子标记技术对大戟科属麻疯树9个自然居群的遗传多样性水平和遗传结构进行了研究.用10个引物对9个居群共135个样品进行了扩增,共获得169条清晰的扩增位点,其中多态性位点164个.POPGENE分析结果表明,麻疯树居群具有丰富的遗传多样水平(多态百分率PPB=97.04%,Nei's遗传多样性H=0.235 7,Shannon'信息指数I=0.376 0).AMOVA分析表明,9个自然居群间遗传多样性出现了较大的遗传分化(Gst=0.539 8)可能与其有限的基因流(Nm=0.466 7)和遗传漂变有关;而居群内有限的遗传分化可能是由于麻疯树自交、近交占主导方式的繁育方式有关.并进行了麻疯树居群的聚类分析.图3表4参19
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