African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12227

Full Length Research Paper

Genetic diversity and population structure of maize landraces from Côte d’Ivoire

N’DA Hugues Annicet*
  • N’DA Hugues Annicet*
  • National Center for Agronomic Research (CNRA), 01 BP 1740 Abidjan 01, Côte d’Ivoire.
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AKANVOU Louise
  • AKANVOU Louise
  • National Center for Agronomic Research (CNRA), 01 BP 1740 Abidjan 01, Côte d’Ivoire.
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POKOU N’da Desire
  • POKOU N’da Desire
  • National Center for Agronomic Research (CNRA), 01 BP 1740 Abidjan 01, Côte d’Ivoire.
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AKANZA Kouadjo Paul
  • AKANZA Kouadjo Paul
  • National Center for Agronomic Research (CNRA), 01 BP 1740 Abidjan 01, Côte d’Ivoire.
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KOUAKOU Charles Konan
  • KOUAKOU Charles Konan
  • National Center for Agronomic Research (CNRA), 01 BP 1740 Abidjan 01, Côte d’Ivoire.
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ZORO BI Irie Arsene
  • ZORO BI Irie Arsene
  • Faculty of Natural Sciences of the University Nangui Abrogoua, 02 BP 801 Abidjan 02, Côte d’Ivoire.
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  •  Received: 01 April 2016
  •  Accepted: 18 October 2016
  •  Published: 02 November 2016

Abstract

Maize (Zea mays L.) occupies an important place among food crops in Côte d’Ivoire. However, no study on the genetic diversity of the species has been performed to date. This study aims at analyzing the diversity and genetic structure of 35 maize accessions using 10 microsatellite markers. These accessions are from different agro-ecological zones representative of the Ivorian territory. The results showed that for all accessions studied, 47 alleles were detected, with an average of 6.71 ± 2.21 alleles per locus. The percentage of polymorphic loci and total genetic diversity, were 91.34% and 0.524 ± 0.159. A slight excess of heterozygotes was observed in the accessions (4.6%). The molecular analysis of variance showed that the total genetic diversity is mainly due to the intra-accession diversity (85.17%). The inter-accession diversity rate was estimated at 14.87%, which is in favor of moderate differentiation between the accessions. The Bayesian analysis grouped the accessions into two populations, regardless of geographical origin. These results provide basic information potentially useful in selection. The cross between two individuals from different groups might help exploit the phenomenon of heterosis.

Key words: Ex situ conservation, Côte d’Ivoire, genetic diversity, maize, microsatellite marker.