Vol. 10, Issue 10 (2021)

Author(s):
PB Pawar, DS Kakade and KB Vavare

Abstract:
The present investigation revealed that all the eight culture media tested showed better growth and variable sporulation of Alternaria polianthi. The mean colony diameter/mycelial growth recorded with all test media was ranged between 4.80 cm (Soybean casein agar) to 8.13 cm (Malt extract agar). The radial growth of Alternaria polianthi was maximum on Malt extract agar (8.13 cm) which was at par with Potato dextrose agar (7.43 cm), Yeast dextrose agar (7.43 cm), Sabouraud’s Dextrose Agar (7.33 cm), Oatmeal agar (6.97 cm) and Czapek’s agar (6.80 cm). The growth reported in Richard’s agar medium was 5.30 cm. While, least growth was observed in Soybean casein agar medium (4.80 cm). 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. Potato dextrose agar, Malt extract agar and Oat meal agar recorded good sporulation (+++).