Abstract
Different nutrient media, temperature regimes and pH levels were evaluated for the growth of Pestalotiopsis psidii causing scabby fruit canker in guava. Among seven different nutrient media evaluated, potato dextrose agar gave maximum mycelial growth (90.00 mm) and growth rate (0.50 mm/h) with creamish white, fluffy mycelium exhibiting beautiful ring pattern after seven days of incubation whereas, maximum number of acervuli was produced on Richard’s agar medium (1552.00) upto 40 days. Out of seven different temperature regimes, 28 °C was observed to be the best temperature for the myceliual growth (90.00 mm) with maximum growth rate (0.50 mm/h) after 7 days whereas, maximum number of acervuli was produced on 15 °C (457.00) up to 40 days. Among seven pH levels, pH 7.0 was observed to be the best pH for supporting the maximum mycelial growth (90.00 mm) and growth rate (0.50 mm/h) after 7 days whereas, maximum number of acervuli was produced at pH 5.0 (1476.67) up to 40 days. The growth rate of the fungus was highest between 48 and 120 h of incubation in different experiments.
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Bhogal, S., Jarial, K., Jarial, R.S. et al. Cultural analysis and growth kinetics of Pestalotiopsis psidii (Pat.) Mordue causing scabby fruit canker in guava (Psidium guajava L.). Indian Phytopathology 75, 691–701 (2022). https://doi.org/10.1007/s42360-022-00501-z
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DOI: https://doi.org/10.1007/s42360-022-00501-z