کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10841193 1067884 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Diversity of microsatellite markers in the populations of Picea asperata originating from the mountains of China
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Diversity of microsatellite markers in the populations of Picea asperata originating from the mountains of China
چکیده انگلیسی
The genetic structure and diversity of natural populations of Picea asperata Mast. were investigated based on seven microsatellite loci. For a total of 300 individuals from 10 populations sampled, a moderate to high level of genetic diversity was observed at population levels with the number of alleles per locus (A) ranging from 6.86 to 11.86 (average 10.89), the proportion of polymorphic loci (P) equaling 100.0%, and the expected heterozygosity (He) ranging from 0.409 to 0.440 (average 0.426). The proportion of genetic differentiation present among populations accounted for 22.3% of the whole diversity. Such extensive inter-population differentiation detected in P. asperata could have resulted from several factors, including restricted gene flow between populations. In fact, the estimate of gene flow obtained in the study was low (Nm = 0.871). Habitat fragmentation caused by human disturbances may be a factor attributing to the low level of gene flow and high genetic differentiation among populations. Our results suggest that microsatellite markers are powerful high-resolution tools for the accurate assessment of population genetic parameters, which are greatly needed in the conservation genetics of P. asperata.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Science - Volume 168, Issue 3, March 2005, Pages 707-714
نویسندگان
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