Journal of
Stored Products and Postharvest Research

  • Abbreviation: J. Stored Prod. Postharvest Res.
  • Language: English
  • ISSN: 2141-6567
  • DOI: 10.5897/JSPPR
  • Start Year: 2010
  • Published Articles: 161

Full Length Research Paper

Evaluation of morphometric and physiological seed quality traits of improved cowpea (Vigna unguiculata L. Walp) varieties in Sierra Leone

Ernest G. Kamara1*, Saidu D. Mansaray2, Milton K. Kabbia1, Moses T. Moseray1 and Jigba M. Jabbie2
1Sierra Leone Agricultural Research Institute, Njala Agricultural Research Centre, P.M.B. 540, Freetown, Sierra Leone.  2School of Agriculture, Njala University, Sierra Leone.
Email: [email protected]

  •  Received: 26 March 2019
  •  Accepted: 14 August 2019
  •  Published: 30 September 2019


A study was conducted at the Seed Laboratory of the Njala Agricultural Research Centre (NARC) to evaluate the seed quality traits of five cowpea genotypes at room temperature (25 ± 2°C). The five genotypes studied were Slipeas 1, 2, 4 and 5 and local Tabe. The trial was laid out in a Completely Randomized Design (CRD) in four replicates. The results indicated that the local variety (Tabe) had the highest percentage of seed coat damage (40%) followed by Slipea 5 (30%) whilst Slipea 1 had the lowest percentage seed coat damage (10%). The vigor and germination percentages of the improved cowpea varieties were higher than the local Tabe. Slipeas 2 and 4 had the highest vigor and germination percentages in this study. Highly positive correlation (r = 0.92, p < 0.001) was observed between vigor and germination percentages. From the findings of this study, the improved cowpea varieties Slipeas 2 and 4 with high vigor and germination indices can be recommended to farmers and seed dealers for long term storage and growing under stress conditions. Breeders can also use them as parents in breeding for stress tolerant cowpea varieties.

Key words: Genotype, seed quality, seed coat damage, germination, vigor.