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Journal of Aquaculture Research & Development

Abstract

Morphological and Pathogenic Variability in Different Isolates of Fusarium oxysporum f. sp. cumini

Sanju Choudhary* and Shailesh Godika

Wilt of cumin incited by Fusarium oxysporum f. sp. cumini is one of the important disease and a big constraint in successful cultivation.  Therefore, in the present study, 7 isolates of Fusarium oxysporum f. sp. cumini collected from different cumin growing areas of Rajasthan were assessed for morphological and pathogenic variations. The different isolates produced sickle shaped macro conidia and spores of varying width, length having variable number of septa. The isolate I2 produced highest length and number of septa in macro conidia. The length of macro conidia varied from 22.77 µm in isolate I3 to 29.65 µm in isolate I2 whereas, micro conidia length varied from 7.54 µm in I4 to 11.53 µm in I6. In study of pathogenic variability, among different isolate, the isolate I1 proved most virulent as it showed disease symptoms earliest whereas, isolate I5 proved least virulent.

Published Date: 2021-07-02; Received Date: 2021-06-14