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Vol. 11, Issue 2 (2022)

Morphological and pathogenic variability in Alternaria alternata causing Alternaria blight of fennel

Author(s):
Suresh Meena, RP Ghasolia and Jitendra Sharma
Abstract:
Alternaria blight of fennel, caused by Alternaria alternata, is one of the major diseases of fennel. Studies were conducted to compare the morphological and pathogenic variability among 15 isolates of Alternaria alternata isolated from fennel, were collected from different locations of Sirohi, Pali, Jodhpur, Dausa and Tonk districts of Rajasthan. All the isolates showed variation in their morphological characters i.e. colony color and shape; conidial number, size, width, length, shape and septation on PDA. Among these, isolates i.e. JF1 and TF1 showed excellent sporulation with maximum colony diameter 90.0 mm and 90.0 mm, respectively. These isolates show variation in their spore length and width also. All the isolates were virulent on the tested variety of fennel for virulence. Among these isolates, JF1 was the most virulent causing maximum disease intensity (80.37%) followed by TF1 (78.18%), JF3 (76.24%), SF3 (72.65%) and DF3 (72.60%) while minimum disease intensity was recorded with DF2 (45.25%).
Pages: 317-320  |  349 Views  145 Downloads


The Pharma Innovation Journal
How to cite this article:
Suresh Meena, RP Ghasolia, Jitendra Sharma. Morphological and pathogenic variability in Alternaria alternata causing Alternaria blight of fennel. Pharma Innovation 2022;11(2):317-320.

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