African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Review

Physiological mechanisms and conventional breeding of sweet potato (Ipomoea batatas (L.) Lam.) to drought-tolerance

Rukundo Placide1,2*, Hussein Shimelis1, Mark Laing1 and Daphrose Gahakwa2
1African Centre for Crop Improvement, University of KwaZulu-Natal, Private Bag X01, Scottsville 3209, Pietermaritzburg, South Africa. 2Rwanda Agriculture Board (RAB), P. O. Box 5016, Kigali-Rwanda.
Email: [email protected]

  •  Accepted: 31 December 2012
  •  Published: 16 May 2013

Abstract

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.