| Registro completo |
| Provedor de dados: |
BABT
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| País: |
Brazil
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| Título: |
Genetic distance and its association with heterosis in cacao
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| Autores: |
Dias,Luiz Antônio dos Santos
Marita,Jane
Cruz,Cosme Damião
Barros,Everaldo Gonçalves de
Salomão,Tânia Maria Fernandes
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| Data: |
2003-06-01
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| Ano: |
2003
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| Palavras-chave: |
Genetic distances
Heterosis
Performance data
RAPD data
Theobroma cacao L.
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| Resumo: |
The efficiency of cacao breeding program can be increased by choosing superior crosses to be made between divergent clones. We assessed the genetic distance among five clones with RAPD data (genetic distance - GD) and with yield component data (Mahalanobis distance - MD). The clones were evaluated in a diallel, during five years, for five yield components. A total of 130 RAPD bands were scored. GD and MD were used to determine the correlation between genetic distances among clones and the performance of their hybrids. The correlation between GD and MD was 0.67 (P=0.03). Both distances were related to heterotic performance of hybrids for wet seed weight/plant and wet seed weight/fruit. The average hybrid performance for the same two yield components was correlated with only MD. Hence, genetic distances measured by RAPD and yield components can be used as a guide to the choice of the superior crosses.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300005
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| Editor: |
Instituto de Tecnologia do Paraná - Tecpar
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| Relação: |
10.1590/S1516-89132003000300005
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| Formato: |
text/html
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| Fonte: |
Brazilian Archives of Biology and Technology v.46 n.3 2003
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| Direitos: |
info:eu-repo/semantics/openAccess
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