GENETIC-VARIATION AND DIFFERENTIATION IN NATURAL-POPULATIONS OF THE COMMON PINE PINUS-SYLVESTRIS L

Citation
Zk. Shigapov et al., GENETIC-VARIATION AND DIFFERENTIATION IN NATURAL-POPULATIONS OF THE COMMON PINE PINUS-SYLVESTRIS L, Genetika, 31(10), 1995, pp. 1386-1393
Citations number
19
Categorie Soggetti
Genetics & Heredity
Journal title
ISSN journal
00166758
Volume
31
Issue
10
Year of publication
1995
Pages
1386 - 1393
Database
ISI
SICI code
0016-6758(1995)31:10<1386:GADINO>2.0.ZU;2-M
Abstract
Genetic variation and differentiation for 12 gene-enzyme systems was e xamined electrophoretically in eight natural populations of the common pine from the southern Urals (Russia), eastern Germany, and Latvia. T he observed and expected heterozygosity values, averaged over all loci , were 0.156 and 0.183, respectively. The proportion of polymorphic lo ci was 48.3% and 59.4%, according to the 95% and 99% criteria, respect ively. The average number of alleles per locus was 2.18, or 1.96 accor ding to the 1% criterion. Intrapopulation variation explained approxim ately 98% of the total genetic diversity, while interpopulation hetero geneity accounted only for 2%. Nei's genetic distances between the pop ulations varied from 0.004 to 0.022, averaging 0.010. Cluster analysis did not show associations between the distribution of the populations on the dendrogram and their geographic location. These results confir m existing evidence on the high level of genetic variation and low dif ferentiation, which is characteristic of most conifer species,with lar ge population sizes and extensive ranges.