Data/hora: 01/06/2024 08:37:09

Provedor de dados: | 52
País: | Brazil
Título: | Temporal genotypic diversity of Schizaphis graminum (Rondani 1852) (Hemiptera: Aphididae) in a black oats (Avena strigosa) field
Autores: | Lopes-da-Silva,Marcelo; Vieira,Luiz Gonzaga Esteves.
Data: | 2010-08-01
Ano: | 2010
Palavras-chave: | Genetic diversity; RAPD; Temporal scale.
Resumo: | The aim of this work was to analyze the clonal diversity variation in Schizaphis graminum during a complete phenological cycle of black oats (Avena strigosa). RAPD markers were used for detection of DNA polymorphisms of each clonal lineage, derived from a single clone collected weekly during a period of four months, in a crop field of black oats, Londrina, Paraná, Brazil. The monthly genotypic diversity was estimated by Shannon Information Index (H). Only four genotypes were distinguished from 122 specimens, with one of them overly predominant in all sampling dates (&gt;60%). Another genotype, apparently a later colonizer, rapidly reached greater frequency than other genotypes on the second and third month. The results of this work suggested that temporal genotypic diversity of S. graminum assessed by RAPD markers was small and less variable than the genetic variation found at geographical scale.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400021
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132010000400021
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.53 n.4 2010
Fonte: | info:eu-repo/semantics/openAccess