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: 427

Full Length Research Paper

Genetic diversity assessment among 18 elite cashew tree genotypes (Anacardium occidentale L) selected in Western Burkina Faso

Konate Moumouni
  • Konate Moumouni
  • Institut de l’Environnement et de Recherche Agricole (INERA), Centre National de Spécialisation en Fruits et Légumes (CNS-FL), DRREA-Ouest, 01 BP 910 Bobo Dioulasso 01, Burkina Faso.
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Tarpaga Windpouiré Vianney
  • Tarpaga Windpouiré Vianney
  • Institut de l’Environnement et de Recherche Agricole (INERA), Centre National de Spécialisation en Fruits et Légumes (CNS-FL), DRREA-Ouest, 01 BP 910 Bobo Dioulasso 01, Burkina Faso.
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Bourgou Larbouga
  • Bourgou Larbouga
  • Institute de l’Environnement et de Recherches Agricoles (INERA), Programme Coton. 01 BP: 208 Bobo-Dioulasso 01, Burkina Faso.
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Wonni Issa
  • Wonni Issa
  • Institut de l’Environnement et de Recherche Agricole (INERA), Centre National de Spécialisation en Fruits et Légumes (CNS-FL), DRREA-Ouest, 01 BP 910 Bobo Dioulasso 01, Burkina Faso.
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  •  Received: 01 December 2021
  •  Accepted: 05 January 2022
  •  Published: 28 February 2022

Abstract

The development of cashew orchards increased in recent years in Burkina Faso, due to high nut demand on international markets. However, little activities have been oriented toward cashew cultivar development, and farmers often use seed plants with little or no information about genetic characteristics of the material at hand. Therefore, a description of cashew diversity is needed to provide guidance to farmers and identify elite material for the crop improvement. In this study, phenotypic attributes of cashew accessions collected in Western Burkina Faso were recorded. Then, Gower’s distance was used to show phenotypic relationship among accessions. Furthermore, four microsatellite markers were used to assess the genetic diversity of accessions, based on amplicon sequences. Sequence patterns across samples were converted into 75 binary alleles, combining sequence length and nucleotide polymorphisms. The 75 binary markers were 100% polymorphic and provided high average alleles per primer of 18.75. The polymorphic information content (PIC) varied between 0.003 and 0.895, averaging 0.534 per primer. Gower’s distance between cultivars varied between 0.151 and 0.894. Dendrograms based on Nei’s distance and Gower’s distance revealed three main clusters each, although group compositions were different. These results were discussed with an outlook on future cashew tree breeding in Burkina Faso.

Key words: horticulture, breeding, molecular markers, phenotype, nut.