Comparative growth, cultural characteristics of Sclerotium rolfsii isolates from selected locations ofTamil Nadu

摘要

Peppermint {Menthapiperita L.) is an important aromatic perennial herb grown throughout the world, and about 70% of the International annual requirement is met from crops raised in the central region of the Indo-Gangetic plains. Peppermint, serves asa source of menthol, menthone, isomenthone etc. and these constituents are used in medicinal preparation, toothpaste, mouthwash, perfumery, cosmetics and as flavoring agents.In India, peppermint is grown throughout the year and affected by fungal diseases caused by Rhizoctonia bataticola, Verticillium dahliae, Colletotrichum cocodes, Rhizoctonia solani and Sclerotium rolfsii. Of these, collar rot caused by Sclerotium rolfsiiSacc. is a major constraint in the pepper mint cultivation in Tamil Nadu as it causes considerable damage to the crop. The present study was conducted to know the effect of different culture media on the growth and sclerotial production of S. rolfsii isolates.