Vol. 10, Issue 12 (2021)

Author(s):
SB Tele, RM Khadtare, CT Kumbhar, NA Napte and SN Hasabnis

Abstract:
The present investigation revealed that all the eight culture media tested showed better growth and variable sporulation of Alternaria alternata. The mean colony diameter/mycelial growth recorded with all test media was ranged between 41.00mm (Soybean casein agar) to 76.70 mm (Sabouraud’s aextrose agar). The radial growth of Alternaria alternata was maximum on Sabouraud’s dextrose agar (76.70 mm) as compared to the rest media. The next best in order of merit was Oat meal agar (73.00 mm). These were followed by Potato dextrose agar (67.7mm), Malt extract agar (67.7 mm), Czapek’s dox agar (66.00 mm), Yeast dextrose agar (64.7 mm) and Richard’s agar (56.7 mm) were good in supporting the mycelial growth of the Alternaria alternata. The least mycelial growth noticed on Soybean casein agar medium (41.00 mm). The mycelium was creamy to ashy white in most of media except in case of Richard’s agar, where mycelium showed dull white to green growth. Whereas, in case of Czapek’s dox agar, the mycelium showed dull white to indigo growth. Sabouraud’s dextrose agar, Potato dextrose agar, Malt extract agar and Oat meal agar recorded good sporulation (+++).