African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6849

Full Length Research Paper

Growth promotion and yield attribute improvement of five groundnut (Arachis hypogaea L.) varieties by the application of plant growth promoting rhizobacteria

Godar Sene
  • Godar Sene
  • Laboratoire Commun de Microbiologie (LCM) IRD/ISRA/UCAD, Centre de Recherche et de Formation à la Recherche IRD/ISRA de Bel-Air, BP 1386. CP 18524 Dakar, Sénégal. 2Département de Biologie végétale, Université Cheikh Anta Diop (UCAD), BP 5005, Dakar-Fann, Sénégal.
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Béatrice Dibor Ndiaye
  • Béatrice Dibor Ndiaye
  • Laboratoire Commun de Microbiologie (LCM) IRD/ISRA/UCAD, Centre de Recherche et de Formation à la Recherche IRD/ISRA de Bel-Air, BP 1386. CP 18524 Dakar, Sénégal. 2Département de Biologie végétale, Université Cheikh Anta Diop (UCAD), BP 5005, Dakar-Fann, Sénégal.
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Maimouna Cissoko
  • Maimouna Cissoko
  • Laboratoire Commun de Microbiologie (LCM) IRD/ISRA/UCAD, Centre de Recherche et de Formation à la Recherche IRD/ISRA de Bel-Air, BP 1386. CP 18524 Dakar, Sénégal., 3Institut de Recherche pour le Développement-IRD, Hann Bel Air, Route des hydrocarbures - BP 1386, CP 18524 Dakar - Sénégal.
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Nogaye Niang
  • Nogaye Niang
  • Laboratoire Commun de Microbiologie (LCM) IRD/ISRA/UCAD, Centre de Recherche et de Formation à la Recherche IRD/ISRA de Bel-Air, BP 1386. CP 18524 Dakar, Sénégal. 2Département de Biologie végétale, Université Cheikh Anta Diop (UCAD), BP 5005, Dakar-Fann, Sénégal.
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Cheikh Ndiaye
  • Cheikh Ndiaye
  • Laboratoire Commun de Microbiologie (LCM) IRD/ISRA/UCAD, Centre de Recherche et de Formation à la Recherche IRD/ISRA de Bel-Air, BP 1386. CP 18524 Dakar, Sénégal. 2Département de Biologie végétale, Université Cheikh Anta Diop (UCAD), BP 5005, Dakar-Fann, Sénégal.
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Saliou Fall1
  • Saliou Fall1
  • Institut Sénégalais de Recherches Agricoles-ISRA, Hann Bel Air, Route des hydrocarbures - BP 3120 Dakar, Sénégal.
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Samba Ndao Sylla
  • Samba Ndao Sylla
  • Laboratoire Commun de Microbiologie (LCM) IRD/ISRA/UCAD, Centre de Recherche et de Formation à la Recherche IRD/ISRA de Bel-Air, BP 1386. CP 18524 Dakar, Sénégal. 2Département de Biologie végétale, Université Cheikh Anta Diop (UCAD), BP 5005, Dakar-Fann, Sénégal.
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  •  Received: 05 November 2023
  •  Accepted: 18 December 2023
  •  Published: 31 December 2023

Abstract

The aim of this investigation was to evaluate the symbiotic performance of a collection of ten plant growth-promoting rhizobacteria (PGPR) strains on the growth and yield attributes of five groundnut varieties. The screening was conducted in the greenhouse using seeds of the varieties Essamay, Amoul Morom, 55-437, Fleur 11 and Sunu Gaal grown in 1.5 kg pots with Sangalkam soils. Leaf chlorophyll content, plant height, number of branches, biomass production, number and mass of pods were the parameters evaluated in response to groundnut inoculation. Overall, the results highlighted the effectiveness of inoculation with certain PGPRs on the growth and yield parameters. However, the effects of the inoculants were highly dependent on the variety used and the parameter studied. In particular, the strains RF8, SI12, SR6, SI16, SI27 and SS10 were the most efficient in improving the plant growth and yield attributes of the varieties Essamay, Amoul Morom and Sunu Gaal. In contrast, Fleur 11 and 55-437 were less responsive in terms of yield attributes, demonstrating that the response to groundnut inoculation is variety dependent. In addition, a significant increase in the estimated leaf chlorophyll content was only observed in Fleur 11 and Sunu Gaal, which was not expected and could be attributed to a lower N2 fixation capacity of the indigenous rhizobia. Nevertheless, the increases in growth and yield parameters obtained in this study can be considered as a promising data for the use of bacterial biofertilisers in groundnut cultivation.

Key words: Peanut cultivars, biofertilizer, plant growth-promoting rhizobacteria (PGPR), inoculation, growth and yield parameters.