Trends and gaps in sweet potato (Ipomoea batatas L.) improvement in subSaharan Africa: Drought tolerance breeding strategies

The main challenge facing agricultural crop production in the current global climate change scenario is sustainability. Drought, as a yield-limiting factor, has become a major threat to international food security. Tolerance to drought is a complex trait and its response is carried out by various genes, transcription factors, microRNAs, hormones, proteins, cofactors, ions and metabolites. The complexity of the trait has limited the development of drought-tolerant sweet potato cultivars by...