African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12193

Full Length Research Paper

Response of okra [Abelmoschus esculentus (L.) Moench] to water stress in the soil

Rasmata NANA*
  • Rasmata NANA*
  • Department of Biology and Plant Physiology, University of Ouagadougou, Burkina Faso.
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Mahamadou SAWADOGO
  • Mahamadou SAWADOGO
  • Department of Biology and Plant Physiology, University of Ouagadougou, Burkina Faso.
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Zoumbiessé TAMINI
  • Zoumbiessé TAMINI
  • Department of Biology and Plant Physiology, University of Ouagadougou, Burkina Faso.
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  •  Received: 27 May 2014
  •  Accepted: 21 July 2014
  •  Published: 27 August 2014

Abstract

Water stress effects induced by stopping watering at vegetative (S1) and flowering (S2) stages were studied on five varieties of okra [Abelmoschus esculantus Moench (L.)]. Parameters such as relative water content, membrane permeability, chlorophyll content and yield of capsules varieties were evaluated. Our results show that water deficiency reduces relative water content of okra leaves. This reduction is more pronounced when water lack occurs at flowering stage of plants and, leakage of electrolytes across cell membranes is increasing. In addition, soil water deficit increased total chlorophyll content of leaves, which is much higher in stressed plants at vegetative stage. At the vegetative stage as to flowering, water deficit also reduces yield of capsules of varieties UAE 1, UAE 40 and UAE 45. This reduction is much important when plants were stressed at flowering.

 

Key words: Okra, water deficit, physiology, performance.