Phylogenetic relationships and differentiation among and within populations of Chaenomeles Lindl. (Rosaceae) estimated with RAPDs and isozymes

被引:75
作者
Bartish, IV [1 ]
Garkava, LP [1 ]
Rumpunen, K [1 ]
Nybom, H [1 ]
机构
[1] Swedish Univ Agr Sci, Balsgard Dept Hort Plant Breeding, S-29194 Kristianstad, Sweden
关键词
gene diversity; isozyme; non-neutrality; RAPD; rosaceae;
D O I
10.1007/s001220051515
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
RAPD and isozyme analyses based on numerous markers have been used for the first time to investigate patterns of phenetic and genetic differentiation among and within nine wild populations of the genus Chaenomeles represented by the species C. japonica, C. speciosa, C. cathayensis and C. thibetica. Highly significant correlations were found between the two different marker systems for both phenetic distances and gene diversity estimates. In agreement with previous studies on cultivated Chaenomeles material, C. japonica was clearly differentiated from C. speciosa and C. cathayensis. The recently recognised species C. thibetica appeared to be rather closely related to C. cathayensis. Populations of C. japonica and C. speciosa were considerably more diverse than populations of C. cathayensis and C. thibetica. Correspondingly, most of the total variability could be attributed to the within-population differentiation in the case of C. japonica and C. speciosa, and to the between-population differentiation in the case of C. cathayensis. Differences in mating systems among the species can be suggested as a possible explanation of the results. A discordant pattern was found between RAPDs and isozymes in the analyses of population structure within C. japonica. This may be explained by a higher proportion of non-neutral markers for isozymes than for RAPDs. This finding also shows the importance of using multiple molecular marker systems in studies of population structure.
引用
收藏
页码:554 / 563
页数:10
相关论文
共 42 条
[1]   RAPDS and allozymes exhibit similar levels of diversity and differentiation among populations and races of Douglas-fir [J].
Aagaard J.E. ;
Krutovskii K.V. ;
Strauss S.H. .
Heredity, 1998, 81 (1) :69-78
[2]  
[Anonymous], 1997, NTSYSpc, Numerical taxonomy and multivariate analysis system, Version 202
[3]  
Aquadro Charles F., 1994, P46
[4]   Genetic diversity and structure of the narrow endemic Wyethia reticulata and its congener W-bolanderi (Asteraceae) using RAPD and allozyme techniques [J].
Ayres, DR ;
Ryan, FJ .
AMERICAN JOURNAL OF BOTANY, 1999, 86 (03) :344-353
[5]  
Barrett SCH., 1989, SPECIATION ITS CONSE, P257
[6]  
Bartish IV, 1999, MOL ECOL, V8, P791, DOI 10.1046/j.1365-294X.1999.00631.x
[7]   Genetic diversity in Chaenomeles (Rosaceae) revealed by RAPD analysis [J].
Bartish, IV ;
Rumpunen, K ;
Nybom, H .
PLANT SYSTEMATICS AND EVOLUTION, 1999, 214 (1-4) :131-145
[8]  
BARTISH IV, 1999, THESIS SWEDISH U AGR
[9]  
BERRY A, 1993, GENETICS, V134, P869
[10]   The distribution of random amplified polymorphic DNA (RAPD) diversity amongst populations of Isotoma petraea (Lobeliaceae) [J].
Bussell, JD .
MOLECULAR ECOLOGY, 1999, 8 (05) :775-789