Promising resistance donors for yellow mosaic and charcoal rot diseases in soybean (Glycine max, L.)

Abstract

Soybean in India is facing many production challenges in the form of biotic and abiotic stresses. Among biotic stresses, yellow mosaic and charcoal rot diseases are causing significant yield losses. Current study was undertaken to identify promising genotypes for yellow mosaic and charcoal rot diseases and higher yield under high disease pressure. A total of seventy-eight genotypes were screened for resistance against yellow mosaic and charcoal rot diseases, and grain yield under sick plot conditions across three years (2021, 2022 and 2023). In addition, these genotypes were also evaluated for seedling charcoal rot resistance through artificial inoculation. Genotypes JS 94 − 67, EC 34372, JS 21–78, JS 21–73, JS 21 − 05 and PS 1024 were found to be promising donors for yellow mosaic disease, while JS 22 − 18, JS 22 − 12 and JS 21 − 05 showed stable field resistance against charcoal rot disease. Through artificial inoculation for charcoal rot resistance, least AUDPC was found in JS 22 − 10 followed by PS 1613, JS 22 − 12, JS 22 − 16, JS 2–05, JS 22 − 15, JS 22 − 18 and KDS 1073. Two genotypes, JS 94 − 67 and JS 21 − 05 were found to superior resistance donors for both the diseases, while JS 22 − 10 and PS 1613 were found to be the best resistance sources for seedling charcoal rot disease. Genotypes identified for different traits will be used by us as parents in developing high-yielding, yellow mosaic and charcoal rot resistant cultivars to sustain the soybean production in India.