The paper is aimed at highlighting the physiological mechanisms associated with breeding of sweet potato towards drought tolerance. It describes important aspects including: the effects of drought stress, mechanisms of adaptation of crops to drought stress, drought stress on sweet potato, inheritance of drought tolerance, methods of screening and breeding of sweet potato for drought tolerance. The literature summarized in this paper may serve as important guideline in sweet potato breeding towards drought-tolerance.
Key words: Breeding, drought-tolerance, genetics, physiology, sweet potato.
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