Ecological correlates of RAPD DNA diversity of wild barley, Hordeum spontaneum, in the Fertile Crescent

被引：58

作者：

Nevo, E

Baum, B

Beiles, A

Johnson, DA

机构：

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

[2] Agr & Agri Food Canada, Ctr Land & Biol Resources Res, Cent Expt Farm, Ottawa, ON, Canada

[3] Univ Ottawa, Ottawa Carleton Inst Biol, Ottawa, ON K1N 6N5, Canada

来源：

GENETIC RESOURCES AND CROP EVOLUTION | 1998年 / 45卷 / 02期

关键词：

genetic diversity; ecological diversity; stress; Near East; wild barley;

D O I：

10.1023/A:1008616923427

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Genetic variability in RAPDs(Randomly Amplified Polymorphic DNA) was studied in 104 genotypes of wild barley, Hordeum spontaneum from 21 populations sampled in Israel, Turkey and Iran, seven population from each country. The band (= loci) frequencies were calculated for each population and correlated with ecogeographical variables. In general, high RAPD genetic diversity indices were associated with stressful environments, either with hot or cold steppes and deserts. Interpopulational genetic distances showed no association with the geographic distance between the populations' provenance. Significant Spearman rank correlations between RAPD band frequencies and ecogeographical parameters of provenance occured. Frequencies of RAPD bands were significantly correlated with the principal component factors of allozymes. The correlation data indirectly suggest that natural selection appears to be the major determinant of both RAPD and allozyme diversities both being correlated with environmental stress.

引用

页码：151 / 159

页数：9

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