Morphological and AFLP variation of Elymus repens (L.) Gould (Poaceae).
Cell Mol Biol Lett
; 7(2A): 547-58, 2002.
Article
em En
| MEDLINE
| ID: mdl-12378260
ABSTRACT
Combined morphological and molecular techniques were used to characterize variation in Elymus repens. We studied the morphological variability of E. repens in relation to the degree of its genetic differentiation, in order to unravel the causes of conspicuous intraspecific morphological variation. Four populations of E. repens from different habitats were analyzed for 35 morphological characters, and their genetic differentiation was assessed by Amplified Fragment Length Polymorphism (AFLP). Four pairs of selective primers were used to detect a total of 279 AFLP bands, of which 104 (37.28%) were polymorphic between populations. Cluster analysis based on AFLP fingerprint data showed that individuals were arranged in population-specific groups. The analyses of variance (ANOVA and AMOVA) indicated significant morphological and genetic differentiation among populations (P<0.01). This study revealed low levels of AFLP variation, which suggests that conspicuous morphological variation of E. repens is caused by plasticity. E. repens is an evolutionarily young species, of hybrid origin, in which microevolutionary processes continue. This study showed that common analysis of genetic diversity and morphology is a powerful tool in low-level taxonomy.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Impressões Digitais de DNA
/
DNA de Plantas
/
Elymus
País/Região como assunto:
Europa
Idioma:
En
Revista:
Cell Mol Biol Lett
Assunto da revista:
BIOLOGIA MOLECULAR
Ano de publicação:
2002
Tipo de documento:
Article
País de afiliação:
Polônia