INDICATORS OF RESISTANCE IN COCOA (THEOBROMA CACAO) TO BLACK POD DISEASE CAUSED BY PHYTOPHTHORA PALMIVORA

D. A. Iwaro, T. N. Sreenivasan, P. Umaharan and G. Sirju-Charran

No 258767, 30th Annual Meeting, July 31-August 5, 1994, St. Thomas, U.S. Virgin Islands from Caribbean Food Crops Society

Abstract: The relationship between morphological characteristics: stomatal frequency, stomatal pore length, surface wax, hardness of pod wall and pod susceptibility to P.palmivora infection was assessed in twelve selected cocoa clones of the Forastero and Trinitario types. Among these clones, significant variation was observed with respect to pod morphological characteristics and their responses to infection. A high positive correlation was obtained between the combined effect of stomatal frequency and pore length, and clonal susceptibility. This suggests that these two morphological characteristics together could be used as a selection criterion for the identification of resistant genotypes.

Keywords: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies (search for similar items in EconPapers)
Pages: 7
Date: 1994-07-31
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:ags:cfcs94:258767

DOI: 10.22004/ag.econ.258767

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