Increased susceptibility toPseudoperonospora cubensis in virus-infectedCucurbita pepo genotypes
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Abstract
Pseudoperonospora cubensis developed more and larger lesions, infected greater leaf areas and produced more sporangia on virus-infected (Vi) than on virus-free (Vf) leaves ofCucurbita pepo genotypes.Pseudoperonospora cubensis from Vi and Vf leaves did not vary in sporangial dimensions (length x width) or pathogenicity to different cucurbits. The preferential development and sporulation ofP. cubensis in Vi than in Vf leaves was due to increased host susceptibility.
Key Words
Pseudoperonospora cubensis downy mildew predisposition to increased susceptibility cucumber mosaic virus Cucurbita pepo vegetable marrowPreview
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