Vol. 10, Issue 10 (2021)

Author(s):
Devanshi Pandit, AK Singh, Sheikh Saima Khushboo, Sardar Singh Kakraliya and Tabasia Amin

Abstract:
Effect of different nutrient media on growth of thirty rice blast isolates (Pyricularia oryzae) collected from different locations of Jammu division was studied. All the isolates were grown on five different nutrient media viz., oat meal agar (OMA), potato dextrose agar (PDA), potato carrot agar (PCA), malt extract agar (MEA) and Czapeks Dox agar CDA) to compare the efficiency of various media in the growth promotion of fungus. The mycelial growth of P. oryzae isolates on different nutrient media after 14 days of incubation varied from 2.42 to 90.00 mm. The maximum mean mycelial growth (49.95 mm) was observed in the isolate Po3 and minimum mean mycelial growth (11.23 mm) was observed in the isolate Po20. All the isolates showed excellent growth on OMA, while good growth observed in PDA and PCA, however, fair and poor growth observed in MEA and CDA, respectively.