Assessment of genotypic performance of potato (Solanum tuberosum L.) for higher yield under Zone-IIIB of Bihar

Potato (Solanum tuberosum L.), a major crop of the Solanaceae family, ranks third globally in staple food consumption after rice and wheat. India, the second-largest potato producer, contributes 15 % of global production, in which Bihar emerging as a key state, especially Nalanda district, known for its higher-than-average yield of 36.46 t/ha. However, during the year 2024-25 low yield of this valuable crop is recorded, possibly due to the lack of quality seed material, disease-free & heat-tolerant varieties that can provide the opportunities for genetic improvement of selected genotypes under agro-climatic conditions of Bihar. Significant variability was observed for most of the traits. Clustering of genotypes in different cluster, underscoring their combined effects on yield. These helps in framing proper breeding strategies to develop high-yielding, disease-resistant varieties suitable for intensive cropping systems in Bihar, contributing to sustainable agriculture and food security of increasing population.