This study explores the biochemical variability across four tuber regions (peel, cortex, medulla, and pith) in 14 potato varieties, focusing on dry matter, reducing sugars, sucrose, phenolics, and physiological traits like sprouting, rottage, and weight loss during storage at 0, 30, and 60 days. Initially, Kufri Lalima had the highest peel dry matter, while Kufri Chipsona-1 had the lowest. By 30 days, Kufri Jeevan exhibited high dry matter in the peel, cortex, and medulla, with Kufri Chipsona-1 leading in the pith. At 60 days, Kufri Arun showed significant dry matter variation, whereas Kufri Bahar experienced a slight decrease in the cortex. Reducing sugars varied, with Kufri Swarna having the highest levels initially and Kufri Chipsona-1 consistently the lowest. By 30 days, Kufri Bahar had high reducing sugars in the cortex and medulla, while Kufri Chipsona-1 remained low. Sprouting increased steadily, peaking at 60 days, with Kufri Swarna and Kufri Kumar showing the highest rates. Rottage was minimal at 30 days but increased significantly by 60 days, with Kufri Swarna and Kufri Giriraj being most affected. Weight loss was highest in Kufri Swarna at 30 days, while Kufri Surya and Kufri Arun retained the most moisture, indicating better storage potential. This analysis provides valuable insights into the biochemical and physiological changes in different potato varieties during storage, emphasizing varietal differences.
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