A study on population genetic structure of Oryza meyeriana (Zoll. et Mor. ex Steud.) Baill. from Yunnan and its in situ conservation significance

文献类型: 外文期刊

第一作者: Gao, LZ

作者: Gao, LZ;Ge, S;Hong, DY;Zhang, JW;Luo, QY;Tao, GD;Xu, ZF

作者机构:

关键词: Oryza meyeriana (Zoll. et Mor. ex Steud.) Baill.;allozyme analysis;Yunnan;population genetic structure;in situ conservation

期刊名称:SCIENCE IN CHINA SERIES C-LIFE SCIENCES ( 影响因子:1.61; 五年影响因子:1.148 )

ISSN: 1006-9305

年卷期: 1999 年 42 卷 1 期

页码:

收录情况: SCI

摘要: In order to determine genetic diversity of Oryza meyeriana (Zoll. et Mor. ex Steud.) Baill., 12 enzyme systems encoded by 17 loci were electrophoretically analyzed in 164 individuals of seven populations from Simao Prefecture, Yunnan Province, China. In comparison with those seed plants with the same life history and breeding systems, as well as the other species in the genus Oryza, the species shows rather low levels of genetic diversity(A =1.1, P=8.0%, Ho=0.004 and He=0.015) within populations and high generic differentiation among populations. F-ST was UP to 0.649, suggesting that 64.9% of total genetic variability exists among populations. Considering high genetic differentiation among populations from a limited geographic region, most of the populations of the species are worth being protected, and therefore, great natural protection regions should theoretically be established in which a great deal of populations should be involved for developing in situ conservation management. Meanwhile, some priory localities for in situ conservation of O, meyeriana in Yunnan Province, were proposed.

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