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This study examines the thermotolerance of seven Indian wheat genotypes under heat stress (25–42°C). Results show varying biochemical responses, with increased enzyme activities (SOD, APX, peroxidase) and decreased proline and chlorophyll content at higher temperatures. The AKAW-4627 genotype exhibited the best thermotolerance due to lower hydrogen peroxide levels and stable biochemical parameters. Findings suggest selecting genotypes with enhanced enzymatic activity and proline accumulation to develop heat-resistant wheat cultivars.
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