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Gamma irradiation may help control the pathogen after harvest, but the dose used can also affect the nutritional value and quality of potato tubers. PURPOSE: We aimed to study the genetic diversity of the potato brown rot pathogen, Ralstonia solanacearum, using molecular markers. We also evaluated how irradiation affects the physicochemical properties of treated and untreated potato tubers. MATERIALS AND METHODS: amplification. After irradiation, the tubers were assessed for weight loss, ascorbic acid, anthocyanin, carotenoid, total soluble solids (TSS), and mineral content. RESULTS: band intensity was also observed following irradiation. The effects of irradiation on tuber quality varied with cultivar and dose. Ascorbic acid and carotenoid contents generally decreased with increasing irradiation dose, whereas anthocyanin and TSS remained comparatively stable. Mineral concentrations were generally higher in irradiated tubers than in untreated samples. CONCLUSION: Gamma irradiation reduced the detectability of the pathogen-specific PCR target, although this does not confirm complete pathogen inactivation. Irradiation conditions require optimization to balance pathogen suppression and nutritional quality. Further viability testing and genomic characterization are recommended.
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Haque et al. (2026) studied this question.
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