Abstract
ISOLATES of Phytophthora palmivora showed different degrees of pathogenic activity (measured by rate of spread of lesions at 25° C.) when wound-inoculated into surface-sterilized pods of particular varieties of cocoa (Theobroma cacao, L.). One isolate, WA 8, failed to attack any variety. Isolates also showed varied rates of spread in different varieties of cocoa. The variety SCA 6 was consistently more resistant than the variety ICS 1. Holliday1 has shown that the variety SCA 6 is more resistant to artificial inoculation of intact pods with a zoospore suspension than is the variety ICS 1.
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References
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SPENCE, J. Probable Mechanism of Resistance of Varieties of Cocoa to Black Pod Disease caused by Phytophthora palmivora (Butl.) Butl.. Nature 192, 278 (1961). https://doi.org/10.1038/192278a0
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DOI: https://doi.org/10.1038/192278a0
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