Chilli (Capsicum annuum L.) is most commonly cultivated species. Pepper yellow
leaf curl virus (PepYLCV) causes serious leaf curl disease of chili. In order to understand plant
defence mechanism to PepYLCV disease, the study reported a response of total phenols and
peroxidase activity in two contrasting pepper genotypes (resistant and susceptible) against
PepYLCThV. The total phenolic content of uninoculated plants in susceptible genotype (KKUP31118)
showed higher value than resistance genotype (9853-123) at both stages. However, the
amount of total phenolic content in resistant genotypes was increased in juvenile and mature
leaves in response to inoculation with PepYLCThV. In case of susceptible one, it was
decreased as compared to uninoculated control. On the other hand, the peroxidase activity in
chilli genotypes and at different stage of leaves was increased every week after inoculation and
increased as a comparison to uninoculated plants. Hence, our finding suggested that the total
phenols may act as defence mechanism in resistant genotype 9853-123.
Keywords
Disease response, PepYLCV, Peroxidase, Phenolic
INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY
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