Fine-Scale Spatial Genetic Structure in Emmer Wheat and the Role of Population Range Position
Volis, Sergei1; Song, Minshu1; Zhang, Yong-Hong2; Shulgina, Irina1
2014-03-01
发表期刊EVOLUTIONARY BIOLOGY
ISSN0071-3260
卷号41期号:1页码:166-173
摘要The extent of spatial genetic structure (SGS) within plant populations depends on seed and pollen dispersal distance, breeding type, level of self-fertilization and effective plant density. Self-fertilizing species with gravity-dispersed seeds are expected to have both small effective population sizes and low pollen movement leading to high genetic structure. Higher SGS can be expected in more patchy and peripheral populations because of lower plant density and population sizes, and lower intensity of gene flow. We tested these predictions analyzing SGS in two core and two peripheral populations of predominantly self-fertilizing emmer wheat. Analysis of SGS with 11 nuclear microsatellites revealed (1) a negative linear relationship between kinship coefficients, calculated for pairs of individuals, and the logarithm of geographical distance between members of the pairs, in all studied populations; and (2) a significant autocorrelation for a distance up to 5 m (core populations) or 20 m (peripheral populations). Pollen flow, estimated from comparison of nuclear and chloroplast variation, was spatially limited, as was seed dispersal. Our results support a hypothesized relationship between SGS intensity and breeding system, the mode of seed dispersal and the population range position (core vs. periphery).
关键词Gene Flow Neighborhood Size Pollen Flow Sp Statistics Spatial Autocorrelation
资助信息Israel Academy of Sciences [ISF 958/07]
学科领域Evolutionary Biology
DOI10.1007/s11692-013-9256-1
收录类别SCI
语种英语
WOS研究方向Evolutionary Biology
WOS类目Evolutionary Biology
WOS记录号WOS:000331646000016
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/17957
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Peoples R China
2.Yunnan Normal Univ, Dept Life Sci, Kunming 650204, Peoples R China
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Volis, Sergei,Song, Minshu,Zhang, Yong-Hong,et al. Fine-Scale Spatial Genetic Structure in Emmer Wheat and the Role of Population Range Position[J]. EVOLUTIONARY BIOLOGY,2014,41(1):166-173.
APA Volis, Sergei,Song, Minshu,Zhang, Yong-Hong,&Shulgina, Irina.(2014).Fine-Scale Spatial Genetic Structure in Emmer Wheat and the Role of Population Range Position.EVOLUTIONARY BIOLOGY,41(1),166-173.
MLA Volis, Sergei,et al."Fine-Scale Spatial Genetic Structure in Emmer Wheat and the Role of Population Range Position".EVOLUTIONARY BIOLOGY 41.1(2014):166-173.
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