Genetic and phenotypic diversity of Larix cajanderi Mayr in the north of the Russian Far East

被引：0
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作者：
N. V. Oreshkova
V. P. Vetrova
N. V. Sinelnikova
机构：
[1] Russian Academy of Sciences,Sukachev Institute of Forest, Siberian Branch
[2] Russian Academy of Sciences,Kamchatka Branch, Pacific Geographical Institute, Far East Branch
[3] Russian Academy of Sciences,Institute of Biological Problems of the North, Far East Branch
来源：
Contemporary Problems of Ecology | 2015年 / 8卷
关键词：
microsatellite loci; phenotypic markers; genetic variation; population structure;
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摘要：
A study of genetic and phenotypic variability of Larix cajanderi has been carried out in northeastern Asia—in Magadan oblast and on the Kamchatka Peninsula. The genetic diversity of the larch is investigated using eight nuclear microsatellite loci (bcLK056, bcLK066, bcLK224, bcLK232, bcLK260, bcLK235, UAKLly6, and UBCLXtet-1–22). Shape characteristics of the cone scales determined by geometric morphometrics are used as phenotypic markers. Microsatellite analysis has revealed a high level of genetic diversity of L. cajanderi in the Far North of Asia. Significant genetic and phenotypic differences between L. cajanderi samples from Magadan oblast and Kamchatka suggest the early isolation of the larch on the peninsula. Heterozygous genotype deficiency is detected in all investigated larch populations in Kamchatka, which are related to a high degree of inbreeding. Excess heterozygotes genotypes are observed in the Magadan populations of L. cajanderi, which is probably due to the balancing selection in favor of heterozygotes.
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页码：9 / 20
页数：11
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