Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/12187
Tipo: Artigo
Título: A priori choice of hybrid parents in plants
Autor(es): Dias, Luiz Antônio dos Santos
Picoli, Edgard Augusto de Toledo
Rocha, Rodrigo Barros
Alfenas, Acelino Couto
Abstract: Plant breeding deals with high-yielding genotypes. However, how best to choose parents of these genotypes remains an unsolved question. Here, we focus on a priori choice based on parental distances by means of agronomic and molecular data. Despite numerous theoretical and empirical studies, a priori choice continues to be a controversial procedure. Both success and failure are commonly reported. We looked at these ambiguous results in order to investigate their possible causes. A total of 139 articles on genetic divergence were sampled to examine aspects such as type and number of markers utilized. We suggest that the mean number of 160, 281 and 25 for RAPD and RFLP markers, and SSR loci, respectively, which we found in these papers, should be increased for accurate analysis. A second sample composed of 54 articles was used to evaluate the divergence-heterosis association. Most of them (28) detected positive divergence-heterosis association, whereas 26 revealed negative or inconclusive results. We examined several causes that influence a priori choice positively and negatively.
Palavras-chave: A priori choice of hybrid parents
Morphological markers
Molecular markers
Plant species
Editor: Genetics and Molecular Research
Tipo de Acesso: Open Access
URI: http://www.locus.ufv.br/handle/123456789/12187
Data do documento: 30-Set-2004
Aparece nas coleções:Artigos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
gmr0087.pdftexto completo473,15 kBAdobe PDFThumbnail
Visualizar/Abrir


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.