Screeing of wheat germplasms for resistance against spike blight disease caused by Exserohilum rostratum
DOI:
https://doi.org/10.48165/jefa.2024.19.02.34Keywords:
Wheat, Exserohilum rostratum, resistance, Disease screening, AUDPCAbstract
The field experiment was conducted at the experimental farm of Institute of Agricultural Sciences, BHU and UAS, Dharwad during the cropping seasons (2018-2019 and 2020-2021). A total of 100 wheat varieties were screened for resistance against spike blight disease. The results showed highest area under disease progress curve (AUDPC) of 593.25 in the DW4. No resistant lines were observed at BHU location. At Dharwad, DW 17 recording lowest 270.38 AUDPC showed resistant reactions. The frequency distribution of genotypes based on disease reaction at BHU consisted of resistant (Nil), moderately resistant (32.6%), moderately susceptible (61.38%), and susceptible (5.94%). The distribution of genotypes based on disease reaction at Dharwad consisted of resistant (10.89%), moderately resistant (84.15%), and moderately susceptible (4.9%). However, genotypes with high levels of spike blight resistance should be developed in future wheat breeding programmes.
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