Genetic divergence in cocoa progenies for backcrossing program to witches' broom disease resistance

Revista Ceres

Milton Macoto Yamada²  Fábio Gelape Faleiro¹  Uilson Vanderlei Lopes²  Acassi Batista Flores¹  José Luis Pires¹  Gilson Roberto Pires Melo¹ 

[1] ,CEPLAC Centro de Pesquisas do Cacau (CEPEC) Itabuna Bahia ,Brasil

关键词: Backcross;    breeding;    molecular markers;    marker assisted selection;    graphical genotype;    Retrocruzamento;    melhoramento;    marcador molecular;    seleção assistida por marcadores;    genótipo gráfico;   

DOI  :  10.1590/S0034-737X2010000100013

来源: SciELO

【 摘 要 】

Backcrossing has been little used in cacao breeding, particularly due to the long time required to transfer genes and recover the genetic background of the recurrent parent. The objective of this study was to select individuals, resulting from the backcross CEPEC-42 x SIC-19, genetically related to the recurrent parent SIC-19 by using RAPD molecular markers, among those with resistance to witches' broom. Of the 31 plants that clustered with SIC-19, 18 from the replanted material remained free of the disease in the field, with good vegetative aspect and, therefore can be used for backcross to reach the desired objective.

【 授权许可】

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