Fine-scale genetic structure in populations of Quercus variabilis (Fagaceae) from southern Korea

被引:10
作者
Chung, MY [1 ]
Chung, MG [1 ]
机构
[1] Gyeongsang Natl Univ, Dept Biol, Jinju 660701, South Korea
来源
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE | 2002年 / 80卷 / 10期
关键词
allozymes; Quercus variabilis; Fagaceae; landscape level; multiple populations; spatial genetic structure;
D O I
10.1139/b02-094
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Quercus variabilis Blume (Fagaceae) is a deciduous broad-leaved tree, and an important forest element among the hillsides of southern Korea. To date, there are contrasting results with respect to fine-scale spatial genetic structure among adults in populations of several oak species; some studies have shown evidence of significant within-population spatial genetic structure, while others found weak or little evidence of fine-scale genetic structuring within populations. We used allozyme loci, Wright's F statistics, and multilocus spatial autocorrelation statistics to examine the distribution of genetic diversity and the spatial genetic structure within three undisturbed populations at a landscape level (72.5 ha, 500 x 1450 m) on Dolsan Island, South Korea. The spatial autocorrelation analyses of adults showed little evidence of fine-scale genetic structuring within populations, which could be due to random mortality among related seedlings, resulting in extensive thinning within maternal half-sib groups. Alternatively, low genetic differentiation between adjacent populations (mean F-ST = 0.023) and little within-population spatial genetic structure suggest probable secondary acorn movement by animals. Our results are very similar to those observed in three populations of Quercus acutissima at a landscape level (15 ha, 250 x 600 m) on Oenaro Island, South Korea. Together, these studies describe relatively subtle differences in genetic structure among adjacent populations of oaks on southern islands in Korea.
引用
收藏
页码:1034 / 1041
页数:8
相关论文
共 69 条
[1]   Microsatellite analysis of demographic genetic structure in fragmented populations of the tropical tree Symphonia globulifera [J].
Aldrich, PR ;
Hamrick, JL ;
Chavarriaga, P ;
Kochert, G .
MOLECULAR ECOLOGY, 1998, 7 (08) :933-944
[2]   INTRASPECIFIC GENETIC-STRUCTURE IN A MIXED POPULATION OF QUERCUS-PETRAEA (MATT) LEIBL AND QUERCUS-ROBUR L [J].
BACILIERI, R ;
LABBE, T ;
KREMER, A .
HEREDITY, 1994, 73 :130-141
[3]   SPATIAL AND GENETIC-STRUCTURE OF 2 SANDHILLS OAKS - QUERCUS LAEVIS AND QUERCUS-MARGARETTA (FAGACEAE) [J].
BERG, EE ;
HAMRICK, JL .
AMERICAN JOURNAL OF BOTANY, 1994, 81 (01) :7-14
[4]  
BERG EE, 1995, EVOLUTION, V49, P110, DOI 10.1111/j.1558-5646.1995.tb05963.x
[5]   REGIONAL GENETIC-VARIATION IN TURKEY OAK, QUERCUS-LAEVIS [J].
BERG, EE ;
HAMRICK, JL .
CANADIAN JOURNAL OF FOREST RESEARCH, 1993, 23 (07) :1270-1274
[6]   GENETIC-STRUCTURE OF BLACK SPRUCE ON 2 CONTRASTING SITES [J].
BOYLE, T ;
LIENGSIRI, C ;
PIEWLUANG, C .
HEREDITY, 1990, 65 :393-399
[7]   Frequency and spatial patterning of clonal reproduction in Louisiana iris hybrid populations [J].
Burke, JM ;
Bulger, MR ;
Wesselingh, RA ;
Arnold, ML .
EVOLUTION, 2000, 54 (01) :137-144
[8]  
Casgrain P, 2001, PERMUTE VERSION 3 4
[9]   GENETIC-VARIATION AND POPULATION-STRUCTURE IN KOREAN POPULATIONS OF EURYA-JAPONICA (THEACEAE) [J].
CHUNG, MG ;
KANG, SS .
AMERICAN JOURNAL OF BOTANY, 1994, 81 (08) :1077-1082
[10]   Spatial genetic structure in a Neolitsea sericea population (Lauraceae) [J].
Chung, MG ;
Chung, MY ;
Oh, GS ;
Epperson, BK .
HEREDITY, 2000, 85 (05) :490-497