Working Document Series Open Access 2012 RUF-32574

High Frequency Adventitious Root and Shoot Regeneration in Recalcitrant Sweet Potato Cultivars

M. GhislainA. KiggunduS.B. MukasaA. SefasiG. Ssemakula

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Abstract

134 words

resistance to weevils through conventional hybridisation has been limited by the lack of resistance sources in the sweetpotato germplasm. The aim of this study was to investigate induction of adventitious shoots which would facilitate genetic transformation of I. batatas with weevil resistance genes. Media with different concentrations of thidiazuron alone or in combination with an auxin were used to investigate induction of adventitious shoots from whole leaves and stem internode segments of two I. batatas cultivars, Kyebandula and Bwanjule. Shoot regeneration was successfully achieved from the two explants of both cultivars. Statistical analysis showed that type of explant effect was significant (P < 0.05) for regenerating shoots. The results of this study are important for I. batatas breeding This is particularly important for African cultivars which have hitherto been difficult to regenerate in vitro.

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