Yield of Six Potato Cultivars after Two Cycles of Local Propagation in Libya

Abstract

The adaptability of six potato cultivars for repeated local propagation in Libya has been tested. Soaking seed tubers in gibberellic acid solution was tried to break the dormancy in tubers taken from the fall crop (harvested in January) to plant the next spring crop (planted in February). The effect of alar foliar spray on plants grown from GA-treated seed tubers was also tested.
Wide variation in yield was noted among different cultivars. The highest yield was obtained in cultivar Bintje without GA soaking, and the cultivars Redbad. Staniaand Claudia whether unsoaked or soaked in 10 ppm GA for 15 minutes. The superiority of these three cultivars over the other tested cultivars (Jaerla and Aniel) could be due to resistance to virus diseases common in Libya.