National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Bacterial leaf spot impelled by Xanthomonas cucurbitae (Ex. Bryan) Vauterin et al is the most important disease of cucurbits especially in bottle gourd and pumpkin. To study the effect of plant age on disease development, the seedlings of bottle gourd and pumpkin were inoculated with standard bacterial suspension (108 cfu/ml) through pin prick spray method after the plants attained the age of 10, 20, 30, 40, 50 and 60 days. The mean disease severity in both bottle gourd and pumpkin was found to reduce with increase in age of plant viz. 10 (59.62% and 65.33%, respectively), 20 (53.81% and 56.55%, respectively), 30 (48.57% and 51.42%, respectively), 40 (42.83% and 40.39%, respectively), 50 (39.16% and 36.28%, respectively) and 60 (33.98% and 33.78%, respectively) days old plants. The plants of bottle gourd and pumpkin at the age of 10, 20, and 30 days were more susceptible to infection as compared to the older plants (40, 50 and 60 days old) which exhibited the presence of adult plant resistance in both the crops against X. cucurbitae.
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