title: Isolation and Characterization of Trichoderma spp. for Antagonistic Activity Against Root Rot and Foliar Pathogens.
abstract: Trichoderma, soil-borne filamentous fungi, are capable of parasitising several plant pathogenic fungi. Twelve isolates of Trichoderma spp. isolated from different locations of South Andaman were characterized for their cultural, morphological and antagonistic activity against soil borne and foliar borne pathogens. The sequencing of these isolates showed seven different species. The isolates revealed differential reaction patterns against the test pathogens viz., Sclerotium rolfsii, Colletotrichum gloeosporioides and C. capsici. However, the isolates, TND1, TWN1, TWC1, TGD1 and TSD1 were most effective in percentage inhibition of mycelial growth of test pathogens. Significant chitinase and β-1,3-glucanase activities of all Trichoderma isolates has been recorded in growth medium. T. viride was found with highest chitinase whereas T. harzianum was recorded with highest β-1,3-glucanase activities.
authors.affiliation: Division of Field Crops, Central Agricultural Research Institute, Port Blair, 744 105 Andaman and Nicobar Islands India.
authors.forename: Krishna
authors.initials: K
authors.lastname: Kumar
authors.forename: N
authors.initials: N
authors.lastname: Amaresan
authors.forename: S
authors.initials: S
authors.lastname: Bhagat
authors.forename: K
authors.initials: K
authors.lastname: Madhuri
authors.forename: R C
authors.initials: RC
authors.lastname: Srivastava
keywords: Andaman and Nicobar Islands; Biocontrol; Spice; Trichoderma