Stability analysis in short duration cultivars of sweet potato (Ipomoea batatas L.)

Eleven short duration cultivars of sweetpotato (Ipomoea batatas L.), Kalmegh, 80/168, S 30, V35, X 24, X 69, C 71, Cross 4, 76 OP/217, 76 OP/219 and H 268 were evaluated for marketable tuber yield and yield contributing characters on lateritic soil with 6.4 pH. The varieties exhibited significant differences in marketable tuber yield. Variety 76 OP/219 produced maximum mean marketable tuber yield (17.2 tonnes/ha) because of highest number of tubers/plant and minimum weevil infestation. The lowest marketable tuber yield was recorded in H 268 (2.1 tonneslha) due to lowest number of tubers/plant and minimum harvest index. Varieties 80/168, S 30, V 35, X 69 and Cross 4 gav!! comparable marketable tuber yield with each other. However, the varieties X 69 (14.4 tonnes/ha), V 35 (14.4 tonnes/ha) and Kalmegh (8.6 tonnes/ha) were stable for marketable tuber yield.