Serological differentiation of three species of Phytophthora causing black pod disease of cocoa
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Date
2007
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Abstract
The extent of serological diversity in isolates of three species of Phytophthora viz., P. palmivora, P. capsici and P. citrophthora causing black pod disease of cocoa in India was studied by immunodiffusion test. The three species of Phytophthora exhibited serological variation in their reaction with antiserum to either P. capsici or P. citrophthora in citrophthora shared at least one common antigen. Two subgroups were distinguished among the isolates of P. capsici whereas all the isolates of P. citrophthora formed a homogeneous serological group. Thus, the results showed that serological technique can be used as additional criterion in distinguishing the three species of Phytophlhora in support of morphological criteria.
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cocoa, blackpod, phytophthora spp., serology, differentiation