|
KMID : 0613820130230060728
|
|
Journal of Life Science
2013 Volume.23 No. 6 p.728 ~ p.735
|
|
|
Genetic Diversity and Population Structure in East Asian Populations of Plantago asiatica
|
|
Huh Man-Kyu
|
|
|
Abstract
|
|
|
|
Plantago asiatica (Plantaginaceae) is a wind-pollinated plant that grows mainly on fields in East Asia. Starch gel electrophoresis was used to investigate the allozyme diversity and population structure of 18 populations of this species. Although the plantain populations were isolated and patchily distributed, they maintained a high level of genetic diversity; the average percentage of polymorphic loci was 57.1%, the mean number of alleles per locus was 2.07, and the average heterozygosity for 18 populations was 0.201. The combination of a predominant wind-pollinated, mix-mating reproduction, large population sizes, high gene flow between subpopulations, and a propensity for high fecundity may explain the high level of genetic diversity within populations. A direct gradient in overall genetic diversity is associated with latitude. Genetic diversity of P. asiatica is markedly decreased from 35˚3′ to high latitude and decreased from 35˚3′N to low latitude, whereas there does not show a longitudinal gradient in genetic diversity.
|
|
|
KEYWORD
|
|
|
Allozyme, gene flow, latitudinal gradient, Plantago asiatica
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|