Abstract

The apparently healthy area around the yellow halo of the spots formed by infection of turmeric leaves byColletotrichum capsici as well as by the treatment of toxin secreted by the pathogen was found to behave differently in certain biochemical properties from healthy area. This area had a hyper rate of respiration, a lower photosynthetic rate and a reduction in major photosynthetic pigments. This biochemically different area can be considered as a prehalo.

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