VARIABILITY OF CULTURAL MEDIA AND PH OF ALTERNARIA SPP PATHOGENIC TO DIFFERENT CROPS

G.P. TIWARI¹*, S.P. TIWARI², SUSHMA NEMA^3
1Department of Plant Pathology, Jawaharlal Nehru Agricultural University, Krishinagar, Adhartal, Jabalpur, 482004, Madhya Pradesh
²Department of Plant Pathology, Jawaharlal Nehru Agricultural University, Krishinagar, Adhartal, Jabalpur, 482004, Madhya Pradesh
³Department of Plant Pathology, Jawaharlal Nehru Agricultural University, Krishinagar, Adhartal, Jabalpur, 482004, Madhya Pradesh
* Corresponding Author : gyanendratiwari808@gmail.com

Received : 24-05-2016     Accepted : 12-06-2016     Published : 30-09-2016
Volume : 8     Issue : 41       Pages : 1835 - 1837
Int J Agr Sci 8.41 (2016):1835-1837

Keywords : Alternaria spp., Media, pH and fungal sporulation
Academic Editor : Avinash Jha
Conflict of Interest : None declared
Acknowledgements/Funding : None declared
Author Contribution : None declared

Alternaria belonging to ascomycota subdivision of fungi causes most common and devastating disease in different crops. The maximum growth was observed potato dextrose agar as well as Oat meal agar media in-vitro. The maximum growth and sporulation of Alternaria spp., was obtained on potato dextrose agar media followed by Oat meal agar media in vitro. Seven media were used for testing the fungus growth and sporulation and compared. The growth characteristics such as colony color and substrate with the sporulation of the test fungus were observed. Maximum growth of mycelium was observed on PDA media at pH 6.0 and followed by 7.0 while maximum sporulation was observed at 7.0 followed by 6.0. Maximum growth of the fungus was observed at 8 days after inoculation with continuous increasing growth in the potato dextrose Agar medium, although the growth rate was decreased after the 2 days of inoculation. This study will be helpful for further investigations on the physiology of the fungus and management of the disease. This investigation may be useful for taxonomic study of the fungus.