Genome size variation in Hordeum spontaneum populations

被引：40

作者：

Turpeinen, T ^{[1
]}

Kulmala, J

Nevo, E

机构：

[1] Agr Res Ctr Finland, FIN-31600 Jokioinen, Finland

[2] Univ Joensuu, Dept Biol, FIN-80101 Joensuu, Finland

[3] Univ Haifa, Inst Evolut, IL-31905 Haifa, Israel

来源：

GENOME | 1999年 / 42卷 / 06期

关键词：

Hordeum spontaneum; genome size; flow cytometry; intraspecific variation; natural selection;

D O I：

10.1139/gen-42-6-1094

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Populations of wild barley, Hordeum spontaneum (C. Koch), originating from 10 ecologically and geographically different sites in Israel, were assessed for genome size. Measurements were obtained by flow cytometry using propidium iodide staining. Genome sizes ranged from 9.35 to 9.81 pg. Variance analysis indicated a significant difference between populations. Genome sizes were positively correlated with mean January temperature. Our results corroborate previous findings of intraspecific variation in genome size from different plant species. The positive correlations between climate and genome size suggest that the latter is adaptive and determined by natural selection.

引用

页码：1094 / 1099

页数：6

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