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Crinipellis perniciosa causes a serious disease of cacao known as witches’ broom (WB). Heritable resistance to witches’ broom has been used in cacao improvement programs. ‘SCA6’ and ‘SCA12’ are highly resistant and are the most commonly used parents in the breeding schemes. However, SCA hybrids are not resistant to witches’ broom in all production areas. Presumably, different populations of C. perniciosa...
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