Journal ID : AMA-09-03-2023-12108
[This article belongs to Volume - 54, Issue - 03]
Total View : 453

Title : Variability of Fusarium Solani Isolates Causing Wilt Disease of Clusterbean

Abstract :

The clusterbean [Cyamopsis tetragonoloba (L.) Taub.] is belong to the Leguminosae (Fabaceae) family. Wilt disease of clusterbean is a seed and soil borne in nature and this disease incited by Fusarium solani. The pathogen creates wilt in seedlings until they reach maturity. Infected plants show girdling at the collar region later in their growth stage resulting in wilting of the host plant. A total of eight isolates of F. solani were established from the surveyed districts of Rajasthan. Isolates were transferred separately on PDA in Petri dishes to study in detail for their discernible characters on the basis of cultural and morphological characters such as the colony diameter, colour and growth patterns. For pathogenic variability, the susceptible variety (RGC-1055) was inoculated with different isolates separately. Cultural and morphological variability were recorded in each isolate and FsJd-1 isolate, collected from Mandor tehsil in Jodhpur district, showed maximum variability in colony diameter, colony characters like pinkish white colony with fluffy growth, in maximum number, length and septa of macro and micro conidia. Among eight isolates, FsJd-1 isolate was found to be most virulent as it produced maximum disease (46.15 %) and categorized as highly virulent.

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