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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 | Tamanho | Formato | |
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gmr0087.pdf | texto completo | 473,15 kB | Adobe PDF | Visualizar/Abrir |
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