STABILITY ANALYSIS IN SHORT DURATION CULTIVARS OF SWEET POTATO (IPOMOEA BATATAS L.)

U. B. APTE; A. R. KARNIK; B. B. JADHAV; R. G. WAGH

U. B. APTE Tuber Crops Scheme, Central Experiment Station Konkan Krishi Vidyapeeth, DapoU, Ratnagiri 415712
A. R. KARNIK Tuber Crops Scheme, Central Experiment Station Konkan Krishi Vidyapeeth, DapoU, Ratnagiri 415712
B. B. JADHAV Tuber Crops Scheme, Central Experiment Station Konkan Krishi Vidyapeeth, DapoU, Ratnagiri 415712
R. G. WAGH Tuber Crops Scheme, Central Experiment Station Konkan Krishi Vidyapeeth, DapoU, Ratnagiri 415712

Keywords: Stability, sweet potato.

Abstract

Eleven short duration cultivars of sweet potato (Ipomoea batatas L.), Kalmegh, 80/168, S 30, V35,X24,X69, C 71, Cross 4, 76 OP/217, 76 OP/219 and H 268were 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 ofhighest 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. Varietiell80/168, S 30, V 35, X69 and Cross 4 gav!! comparable marketable tuber yield with each other. However, the varieties X 69 (14.4 tonnes/ha), V 35 (14.4 tonnesiha) and Kalmegh (8.6 tonneslha) were stable for marketable tuber yield.