Morphological Variability of Macrophomina Phaseolina (Tassi) Goid. Charcoal Rot of Sorghum
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 4
Abstract
Twenty six isolates of Macrophomina phaseolina, causing charcoal rot of sorghum, obtained from different parts of Karnataka, Maharashtra and Andhra Pradesh, varied in their morphological characteristics. Colony diameter varied from 60.00 to 90.00 mm. The higher mean colony diameter was observed in Raichur, Gadag, Gulberga-2, Amaravati, Mulegoan, Solapur, Ahmednagar, Kopargoan, Shirdi, Nanded and Nizamabad isolates. On the basis of colony color, isolates were divided into 4 groups, i.e. grayish white (Dharwad, Ushmanabad, Parbhani); blackish gray (Raichur, Gadag, Gulberga-1, Gulberga-2, Bidar, Ramnagar, Zalki, Solapur, Pune, Ahmednagar, Kopargoan, Nanded, Jalna, Nizamabad, Akola); deep black (Bijapur, Athani, Amaravati, Mulegoan, Tulajapur, Rahuri); cottony white color (Patancheru, Shirdi). Blackish gray, deep black and cottony white color. Ramnagar isolates produced bigger size of sclerotia (94.0 μm). Rahuri isolate produced the highest number of sclerotia (60.3 sclerotia/microscopic field 10X) and 110,135 and 180 sclerotia/9mm disc during 2nd, 4th and 6th days after inoculation, respectively.
Authors and Affiliations
Kavitha T. R, Sunitha T. R, Basavaraj Naik T
Keywords
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