2006
DOI: 10.1007/s10681-005-9070-7
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Mapping QTLs for Witches' Broom (Crinipellis Perniciosa) Resistance in Cacao (Theobroma Cacao L.)

Abstract: Molecular markers (RAPD, AFLP and microsatellites) were used to generate a linkage map and to identify QTLs associated to witches' broom (Crinipellis perniciosa) resistance in cacao (Theobroma cacao), using 82 individuals of an F 2 population derived from the clones ICS-1 (susceptible) and Scavina-6 (resistant). Fifteen evaluations of the number of brooms have been carried out in six years (1997)(1998)(1999)(2000)(2001)(2002). In order to increase the precision and accuracy in the measures of resistance, each … Show more

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Cited by 52 publications
(38 citation statements)
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“…The results of this study on the performance of progeny Sca 6 tended to confirm the evidence that the resistance to WBD of cacao probably involves major and minor genes (Faleiro et al 2006). The identification of QTL (Quantitative Trait Loci) reinforces this argument (Lanaud et al 1995, Crouzillat et al 1996, Motilal et al 2002, Pugh et al 2004.…”
Section: Resultssupporting
confidence: 78%
“…The results of this study on the performance of progeny Sca 6 tended to confirm the evidence that the resistance to WBD of cacao probably involves major and minor genes (Faleiro et al 2006). The identification of QTL (Quantitative Trait Loci) reinforces this argument (Lanaud et al 1995, Crouzillat et al 1996, Motilal et al 2002, Pugh et al 2004.…”
Section: Resultssupporting
confidence: 78%
“…Genetic mapping proved that Sca6 has a gene or gene block with a main effect (major genes), which is responsible for conferring Sca descendant clones resistance to the disease (Queiroz et al 2003, Faleiro et al 2006. Although it is a widely used source of resistance, Sca derived varieties have been displaying symptoms in some regions of Brazil (Faleiro et al 2004).…”
Section: Introductionmentioning
confidence: 99%
“…The availability of highly polymorphic neutral markers, allied to modern statistical procedures, allows the construction of linkage maps for most plant species, even perennials, such as forest and fruit trees (Carneiro and Vieira, 2002). In the case of T. cacao, genetic mapping has been done with molecular markers, comparing segregating populations (Pugh et al, 2004;Faleiro et al, 2006).…”
Section: Introductionmentioning
confidence: 99%