Abstract
Polyclonal antisera were produced in albino white rabbits against intact teliospores of Karnal bunt (Tilletia indica). The Immunoprobe generated was used for the development of Immunoblot binding assay for detecting Karnal bunt (KB) infections in wheat seed samples. The antiserum reacted strongly with intact teliospores of T. indica, Pantnagar isolate in agglutination reaction. Wheat grains with different grades of infection could be readily detected by Seed Immunoblot Binding Assay (SIBA). Karnal bunt infected wheat seeds when kept for vigour testing on nitrocellulose paper, formed a coloured imprint after the paper was immunoprocessed. The SIBA would not only be a better Indication of teliospores load on seed but also quality of seed in terms of vigour. This method is expected to be useful in routine monitoring of wheat lots for the presence of KB teliospores.
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