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Genetic distance and its association with heterosis in cacao BABT
Dias,Luiz Antônio dos Santos; Marita,Jane; Cruz,Cosme Damião; Barros,Everaldo Gonçalves de; Salomão,Tânia Maria Fernandes.
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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic distances; Heterosis; Performance data; RAPD data; Theobroma cacao L..
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300005
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