THE MATING SYSTEM AND GENETIC-STRUCTURE IN A PERENNIAL GRASS, CYNOSURUS-CRISTATUS L

被引：24

作者：

ENNOS, RA ^{[1
]}

机构：

[1] UNIV NEWCASTLE UPON TYNE, DEPT GENET, NEWCASTLE UPON TYNE NE1 7RU, TYNE & WEAR, ENGLAND

来源：

HEREDITY | 1985年 / 55卷 / AUG期

关键词：

D O I：

10.1038/hdy.1985.78

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The breeding system, genotypic structure, and degree of spatial genetic differentiation were investigated in a population of the perennial grass Cynosurus cristatus using 4 polymorphic allozyme loci. Both incompatibility studies and analysis of progeny genotype arrays gave outcrossing rate estimates of t = 0.98, not significantly different from random mating. Levels of inbreeding and of gametic disequilibrium between allozyme loci were negligible. Genetic differentiation among adult subpopulations was very low (GST = 1.14% percent). Among pollen pool subpopulations genetic differentiation was even lower (GST = 0.28%). It is concluded that substantial pollen flow prevents the development of significant genetic differentiation through random genetic drift in different areas of the same population.

引用

页码：121 / 126

页数：6

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