GROWTH CHARACTERISTICS OF DIFFERENT ISOLATES OF FUSARIUM OXYSPORUM F. SP. CUBENSE ON SABOURAUD’S AND POTATO DEXTROSE AGAR MEDIA

Abstract

Fourteen different isolates of Fusarium oxysporum f. sp. cubense studied in vitro to know there growth and morphological characteristics on Sabouraud’s and Potato dextrose agar media. Among fourteen isolates studied Maddur (Kowdle) isolate showed best growth and sporulation on Sabouraud’s medium with pinkish to purple colour colony growth and maximum macro and micro conidial spore size of 31.4 × 3.8 and 10.8 × 3.2 respectively. Whereas in Potato Dextrose Agar Mysore (Thandavapura), Maddur (Koppa) and Mysore (Konnur) isolates revealed maximum growth and sporulation with whitish to pink colour colony growth. The maximum spore size of macro(31.4 × 3.7) and micro (10.5 × 3.4) conidia was found best in Bangalore (Shivakote) isolate.