Cacao () is a globally important crop, and its yield is severely restricted by disease. Two of the most damaging diseases, witches' broom disease (WBD) and frosty pod rot disease (FPRD), are caused by a pair of related fungi: and , respectively. Resistant cultivars are the most effective long-term strategy to address diseases, but efficiently generating resistant and productive new cultivars will require robust methods for screening germplasm before field testing.
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