Vol. 11, Issue 7 (2022)

Author(s):
Shugufta Parveen, FA Mohiddin, M Ashraf Bhat, Shaheen Kousar, M Anwar Bhat, Fehim Jeelani Wani, FA Bhat, Zahoor Ahmad Baba and Sajad Un Nabi

Abstract:
The genus Trichoderma is characterized by having pustulate or tufted, repeatedly branched conidiophores. The phialides formed on the conidiophores, are lageniform and hyaline and the conidia are green in colour. This genus is widely used for the management of plant pathogens due to its unique biological properties. Mycoparasitism is one of the important mechanisms used by Trichoderma for disease control. In the current study, two isolates of Trichoderma were used to screen their mycoparasitic activity against the three pathogens affecting rice. All the three pathogens viz, Pyricularia oryzae, Bipolaris oryzae and Rhizoctonia solani were isolated from diseased plant tissues. It was revealed that both Trichoderma isolates could grow parallel to the hyphae of all the tested pathogens. The hyphae of Trichoderma coil around the mycelium and form appressoria and hook-like structure. Degeneration of pathogen hyphae was also reported by one of the isolates of Trichoderma.