Breeding efforts of CIP’s potato breeding program using germplasm of wild species, landraces and improved material have resulted in the development of two advanced populations with specific adaptation to the most important agro-ecologies of the tropics and subtropics: the Highland-tropics adapted late blight resistant population and the Lowland sub-tropics virus resistant population. The Highland-tropics adapted late blight resistant population combines high levels of resistance to late blight with economically important traits such as tuber yield, tuber quality, processing and improved adaptation to warm environments and mid-season maturity (90 day growing period under short day length conditions). The Improved potato set for tropical environments is a subset that contains clones from both populations with resistance or tolerance to biotic and abiotic stresses that can be adopted by farmers to increase production and productivity in the tropics and subtropics. This subset can also be utilized for further crop improvement and release as varieties and is available from CIP genebank.