Poa annua L. in Antarctic:: searching for the source of introduction

被引:57
作者
Chwedorzewska, Katarzyna J. [1 ]
机构
[1] Polish Acad Sci, Dept Antarct Biol, PL-02141 Warsaw, Poland
关键词
Poa annua L; AFLP; genetic diversity; South Shetlands Islands; Antarctica;
D O I
10.1007/s00300-007-0353-4
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
The level of polymorphism, genetic variability and relatedness of a population of Poa annua L. from South Shetlands Islands was studied and compared with results obtained for populations from two potential sources of introduction ( Argentina - Ushuaia and Poland - Dziekanow Lesny) using the amplified fragment length polymorphism (AFLP) approach. Five primer pairs used for AFLP profiling amplified 226 scoreable DNA fragments that were used for Clustral and Factorial analyses. The level of molecular variability among all individuals from all the analysed populations reaches 30%. Clustral and Factorial analyses show that all populations formed clear-cut uniform groups according to their locations. However, population from King George Island show high variability. High genetic diversity may be related with escalated human activity at the area of Arctowski Station, favouring introductions of P. annua from many different sources and by many different vectors.
引用
收藏
页码:263 / 268
页数:6
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