Journal of
Plant Breeding and Crop Science

  • Abbreviation: J. Plant Breed. Crop Sci.
  • Language: English
  • ISSN: 2006-9758
  • DOI: 10.5897/JPBCS
  • Start Year: 2009
  • Published Articles: 393

Full Length Research Paper

Sorghum mutation breeding for tolerance to water deficit under climate change

Minimassom P. Nikièma
  • Minimassom P. Nikièma
  • Institut de l’Environnement et de Recherches Agricoles (INERA), 04 BP 8645 Ouagadougou 04, Burkina Faso.
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Nofou Ouédraogo
  • Nofou Ouédraogo
  • Institut de l’Environnement et de Recherches Agricoles (INERA), 04 BP 8645 Ouagadougou 04, Burkina Faso.
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Hamidou Traoré
  • Hamidou Traoré
  • Institut de l’Environnement et de Recherches Agricoles (INERA), 04 BP 8645 Ouagadougou 04, Burkina Faso.
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Mahamadou Sawadogo
  • Mahamadou Sawadogo
  • Université Pr Joseph Ki Zerbo, O6 BP 9499 Ouagadougou 06, Burkina Faso.
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Ljupcho Jankuloski
  • Ljupcho Jankuloski
  • Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna International Centre, P. O. Box 100, 1400 Vienna, Austria.
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Mukhtar Ali Ghanim Abdelbagi
  • Mukhtar Ali Ghanim Abdelbagi
  • Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna International Centre, P. O. Box 100, 1400 Vienna, Austria.
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Djibril Yonli
  • Djibril Yonli
  • Institut de l’Environnement et de Recherches Agricoles (INERA), 04 BP 8645 Ouagadougou 04, Burkina Faso.
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  •  Received: 29 February 2020
  •  Accepted: 01 June 2020
  •  Published: 31 July 2020

Abstract

This study aimed at creating genetic variability by induced mutagenesis in farmers’ preferred sorghum variety (ICSV1049) to breed mutant lines for water deficit tolerance. Sorghum seeds were irradiated by gamma rays and sown as one panicle-to-one progeny method. Putative lines M5 (143) and parent were screened under water deficit stress. Data analysis showed that leaf senescence (LS) was positively correlated to relative water content (RWC), panicle weight (PaWt), grain weight (GrWt) and chlorophyll content 13 days after water deficit application (SPAD II). Semi-dwarf trait (SDwf) with plants height (Ht)<100 cm were observed among 3.38% of lines, while 13.5% exhibited early maturity (<90 days). The leaves of 87.3% of lines were semi-erectile. Averaged overall lines, mutation has reduced date to flowering (DaFl), date to grain maturity (DaMa) and LS at 9.2, 4.1 and 8.1% compared to the parent, respectively. However, SPAD I (chlorophyll content first day of water deficit application), SPAD II, RWC, GrWt, PaWt and Ht were increased at 30.8, 40.5, 36.5, 22.2, 37.5 and 9.3%, respectively. Based on the results, seven mutant lines exhibited tolerance to water deficit.

Key words: Mutagenesis, genetic variability, drought-tolerance.