International Journal of Plant Protection

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Effect of Growth and Sporulation on Different Solid Media and Toxin Production by alternaria spp. Causing Leaf Spot on Cotton


Affiliations
1 Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology,Udaipur Rajasthan, India
2 Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology,Udaipur Rajasthan
     

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In vitro physiological studies revealed that fungus grew well on PDA and malt extract media. Maximum mycelial growth was recorded on Potato dextrose agar medium at 25±2°C temperature and pH 7.0 for all the three Alternaria spp. The severe symptoms were produced by Alternaria alternata Alternaria macrospora and Alternaria gossypina. Thus, it was confirmed that the maximum toxin was produced by Alternaria alternata as compared to Alternaria macrospora and Alternaria gossypina. Non-Bt cotton plants were more susceptible as compared to Bt cotton plants.

Keywords

Sporulation, Media, Toxin,alternaria Spp., Leaf Spot, Bt Cotton, Non-bt Cotton
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  • Effect of Growth and Sporulation on Different Solid Media and Toxin Production by alternaria spp. Causing Leaf Spot on Cotton

Abstract Views: 343  |  PDF Views: 0

Authors

P. K. Meena
Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology,Udaipur Rajasthan, India
R. S. Ratnoo
Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology,Udaipur Rajasthan

Abstract


In vitro physiological studies revealed that fungus grew well on PDA and malt extract media. Maximum mycelial growth was recorded on Potato dextrose agar medium at 25±2°C temperature and pH 7.0 for all the three Alternaria spp. The severe symptoms were produced by Alternaria alternata Alternaria macrospora and Alternaria gossypina. Thus, it was confirmed that the maximum toxin was produced by Alternaria alternata as compared to Alternaria macrospora and Alternaria gossypina. Non-Bt cotton plants were more susceptible as compared to Bt cotton plants.

Keywords


Sporulation, Media, Toxin,alternaria Spp., Leaf Spot, Bt Cotton, Non-bt Cotton