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    Sweet success for scientists

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    Al Jazeera English

    by Al Jazeera English

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    The cacao bean - from the cacao tree - is the key ingredient of chocolate, but blight frequently wipes out entire crops, costing growers more than $700m each year.

    However, by mapping the genes of the cacao tree, scientists hope to identify key traits in its DNA that will allow them to breed or engineer high-yielding plants with greater disease resistance.

    With the chocolate business already generating $50bn a year, such an achievement would come with big financial rewards for farmers and chocolate makers.

    Al Jazeera's Tarek Bazely reports.