Polymorphism of hordein-coding loci in cultivated barley (<Emphasis Type="Italic">Hordeum vulgare</Emphasis> L.) in Afghanistan |
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Authors: | A A Pomortsev S P Martynov O N Kovaleva E V Lyalina |
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Institution: | 1.Vavilov Institute of General Genetics,Russian Academy of Sciences,Moscow,Russia;2.Vavilov Institute of Plant Industry,St. Petersburg,Russia |
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Abstract: | Polymorphism of hordeins encoded by the Hrd A, Hrd B, and Hrd F loci was analyzed in 84 accessions of local barley (Hordeum vulgare L.) varieties from major agricultural regions of Afghanistan using starch gel electrophoresis. Forty alleles of the Hrd A locus with the frequencies from 0.12 to 32.73%, 62 alleles of the Hrd B locus with the frequencies from 0.12 to 14.29%, and five alleles of the Hrd F locus with the frequencies from 0.59 to 32.15% have been identified. The conclusion about genetic similarity of barley populations
from different regions of Afghanistan is made on the basis of cluster analysis of the matrix of allele frequencies in barley
populations from 31 localities. The local barley populations form four unequal clusters. The largest cluster I includes populations
from 14 localities of Afghanistan. The second largest cluster IV consists of populations from ten localities, and clusters
II and III comprise populations from four and three localities, respectively. Each of the four clusters includes populations
from different regions of northern and southern Afghanistan. Based on our results, we conclude that the diversity of hordein-coding
loci and the distribution of their alleles among different regions of Afghanistan are the consequences of introduction of
barley landraces and their distribution over trade routes. |
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