Data/hora: 03/06/2024 16:18:11

Provedor de dados: | 74
País: | Brazil
Título: | Association between genetic distances in wheat (Triticum aestivum L.) as estimated by AFLP and morphological markers
Autores: | Vieira,Eduardo Alano; Carvalho,Fernando Irajá Félix de; Bertan,Ivandro; Kopp,Mauricio Marini; Zimmer,Paulo Dejalma; Benin,Giovani; Silva,José Antônio Gonzalez da; Hartwig,Irineu; Malone,Gaspar; Oliveira,Antônio Costa de.
Data: | 2007-03-01
Ano: | 2007
Palavras-chave: | Reeding; Genetic divergence; Molecular markers; Morphological traits.
Resumo: | Molecular and morphological data analyses matrices are very informative tools for the estimation of genetic distances. We used AFLP markers, morphological traits and combined analysis to estimate the genetic distances between wheat genotypes and ascertain any associations between the two techneques. Nineteen wheat (Triticum aestivum L.) genotypes were analyzed using amplified fragment length polymorphism (AFLP) markers and field evaluated for two years. The matrices obtained by morphological and molecular marker data analyses revealed a significant but moderate correlation (r = 0.47), indicating that such techniques sample distinct genome regions. The combined analysis was found to be highly correlated with AFLP (r = 0.97) and moderately correlated with morphological (r = 0.59) markers. A possible explanation for such results is a bias caused by the much higher number of AFLP (229) than morphological (17) markers. Thus, it is evident that the combined analysis is not efficient when a very dissimilar number of markers are used in each isolated technique. Therefore, to obtain a better knowledge of the degree of divergence among genotypes it is necessary to consider each analysis separately.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300016
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572007000300016
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.30 n.2 2007
Fonte: | info:eu-repo/semantics/openAccess