Vol. 12, Issue 7 (2023)

Author(s):
Sudha Kiran Tigga, Anil S Kotasthane, Toshy Agrawal, Kishan Kumar Sharma, Shamsher Alam, Nisha Thakur and Ruparani Diwakar

Abstract:
Trichoderma, a widely prevalent fungus classified under the family Hypocreaceae, possesses numerous traits and known for their extreme versatility and adaptability that make it highly suitable as a growth-promoting and biocontrol agent. In the present investigation, Trichoderma isolates were derived from rhizospheric soils of weed hosts from different geographical locations of Chhattisgarh. Ten isolates of Trichoderma (T₁, T₃, T₈, T₂₃, T₂₇, T₂₉, T₃₄, T₄₅, T₅₀, T₆₀) differing in siderophore production were selected and mycoparasitic ability against two rice pathogens S. rolfsii and R. solani were screened. Isolate T₂₇ (75%) showed maximum inhibition whereas T₂₃ (63.8%) showed minimum inhibition towards S. rolfsii and isolate T₈ (75%) showed maximum inhibition whereas T₂₉ (45%) showed the minimum inhibition towards R. solani whereas isolate T₈ was equally effective in inhibiting both the pathogens. Trichoderma isolates were more effective against S. rolfsii as compared to R. solani.