Studies on cultural and morphological variation among 20 isolates of fusarium oxysporum causing wilt of tomato
Twenty isolates of Fusarium oxysporum causing wilt of tomato were recorded for its cultural and morphological variations. The Fusarium oxysporum isolates Fs4 , Fs8 , Fs 11 , Fs12 , Fs14 , Fs15 , Fs16 , Fs17 , Fs19 , Fs20 having the radial colony growth between diameter of 86 mm to 90 mm were among the fast growing category whereas isolates Fs1 , Fs3 , Fs10 , Fs13 , Fs18 showed colony growth between 64 mm to 80 mm classified as medium growing and bellow 64 mm growth of isolates were recorded as slow growing.