African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12291

Full Length Research Paper

Genetic diversity of Faidherbia albida populations in the Sudano Sahelian region of Cameroon, using simple sequence repeat (SSR) markers

T. Dorothy Tchatchoua
  • T. Dorothy Tchatchoua
  • Department of Ecosystem Science and Management, Pennsylvania State University, University Park PA 16802 USA.
  • Google Scholar
R. Scott Poethig
  • R. Scott Poethig
  • Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA.
  • Google Scholar
Erin Doody
  • Erin Doody
  • Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA.
  • Google Scholar
T. Casey Weathers
  • T. Casey Weathers
  • Department of Ecosystem Science and Management, Pennsylvania State University, University Park PA 16802 USA.
  • Google Scholar
Krystle Swartz
  • Krystle Swartz
  • Department of Ecosystem Science and Management, Pennsylvania State University, University Park PA 16802 USA.
  • Google Scholar
Iain Mathieson
  • Iain Mathieson
  • Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia. PA 19104, USA.
  • Google Scholar
Nicole Zembower
  • Nicole Zembower
  • Department of Ecosystem Science and Management, Pennsylvania State University, University Park PA 16802 USA.
  • Google Scholar
Tetyana Zhebentyayeva
  • Tetyana Zhebentyayeva
  • Department of Ecosystem Science and Management, Pennsylvania State University, University Park PA 16802 USA.
  • Google Scholar
John E. Carlson
  • John E. Carlson
  • Department of Ecosystem Science and Management, Pennsylvania State University, University Park PA 16802 USA.
  • Google Scholar


  •  Received: 06 May 2020
  •  Accepted: 06 July 2020
  •  Published: 31 July 2020

Abstract

Faidherbia albida (DEL.) A. Chev is widely grown in the northern region of Cameroon because of its many benefits to local communities. However, droughts and deforestation have led to decreases in the abundance of this species, increasing the need to identify improved genotypes for conservation, management, and breeding. The genetic diversity of F. albida in nine populations from the Sudano-Sahelian region of northern Cameroon was characterized using microsatellite (SSRs) markers. A total of 28 alleles were recorded across 8 loci and 255 samples. The effective mean number of alleles per locus was 2.3. Observed heterozygosity ranged from 0.24 to 0.30, while expected heterozygosities ranged from 0.22 to 0.26. For most loci, FIS was negative. Higher variation was observed within than among the northern Cameroon populations, and principal component and admixture analyses did not reveal any population substructure. Phenotypic diversity in 3-month-old seedlings was also characterized and significant within population variation was found for most morphological traits. Although some populations differed significantly for one or more traits, in general the populations were phenotypically similar. These results suggest little barrier to gene flow between populations of F. albida in northern Cameroon, and that no single provenance is likely to be superior for selection and breeding purposes.

 

Key words: Faidherbia albida, phenotypic, genotypic, variation, populations, breeding.