Ecology, Environment and Conservation Paper

CULTURAL AND MORPHOLOGICAL CHARACTERIZATION OFRHIZOCTONIA SOLANI, RESPONSIBLE FOR SEEDLING BLIGHTAND DRY ROOT ROT OF LENTIL

Jasudasu G.S., Sharma B.R., Khalko S., Bandyopadhyay S. and Roy A.

Abstract

The experiments were aimed to know the Cultural and morphological variation of the important fungalpathogens of the lentil crop under Terai zone of West Bengal region and to find out the pathogenic variability.The isolate RHS-3 from Pundibari region show best growth on any of the media tested. Richard’s mediumgave the maximum number of sclerotia per Petri plate (9 cm) followed by the PDA and Cornmeal gave theminimum number of sclerotia. In case of liquid broth medium, the potato dextrose broth has produced themaximum fresh weight of the mycelium (7.453 g) followed by the Richard’s broth medium (3.524 g) and theAsthana hawkers broth supports the less growth and produced the less fresh weight of mycelium (1.49 g)followed by the Czapek dox broth medium (1.590 g). Among the media, Richard’s medium gave the biggersclerotia (2.159 mm) followed by Asthana and hawkers medium (1.814 mm) and in PDA, small sized sclerotiawere produced (1.195 mm) followed by Cornmeal agar medium (1.263 mm).