Effect of postharvest greening of potatoes on their chlorophyll and glycoalkaloid conttents and keeping quality during storage at room temperature

Postharvest greeinng of tubers of potato cvs, Kufri Chandramukhi, Kufri Sindhuri, and Kurd Dewa under direct or diffused sunlight for 20 days resulted in a 10 to 18 fold increase in the chloropltyll content of the peel when compared to ungreened control tubers. The total glycoalkaloid content of the peel increased by 8 to 56% by the diffused light treatment, and by 26 to 75% by the direct sunlight greening. The greened tubers particularly those greened under diffused light, showed Jeu rottage than ungreened control tubers during room temperature storage over the summer at Jullundur.