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Effect of the halophytic grass Sporobolus robustus Kunth as a potential nurse plant on the germination and establishment of Vachellia seyal and Prosopis juliflora under saline conditions

Fall Fatoumata, Bakhoum Niokhor, Diouf Diégane, Fall Dioumacor, Le Roux Christine, Bâ Amadou Moustapha. 2020. Effect of the halophytic grass Sporobolus robustus Kunth as a potential nurse plant on the germination and establishment of Vachellia seyal and Prosopis juliflora under saline conditions. Arid Land Research and Management, 5 p.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Fall 2020 Effect of the halophytic grass Sporobolus robustus as a potential nurse plant on the germination and establishment of V. seyal and P. juliflora.pdf

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Abstract : Here, we tested the hypothesis that the halophytic grass Sporobolus robustus acts as a nurse plant by enhancing the germination, growth, survival, mycorhization and soil mycorrhizal potential of Vachellia seyal and Prosopis juliflora, and reducing soil salinity. Seeds of each legume were sown 3 cm from a 5-month-old tussock of S. robustus (+) or without S. robustus (−) as a control in a saline soil under greenhouse conditions. Seedlings of each legume were also individually planted 3 cm from a tussock of S. robustus (+) or without S. robustus (−). Sporobolus robustus (+) treatment improved the germination rate for P. juliflora (from 37 to 47%) and for V. seyal (from 23 to 43%). Furthemore, the S. robustus (+) treatment significantly increased P. juliflora and V. seyal seedlings survival (82 and 50%, respectively), mycorrhizal colonization (33 and 35-fold, respectively) and soil mycorrhizal potential (11 and 22-fold, respectively) compared to the control, whereas, no significant effect of S. robustus was observed on the growth parameters of either set of seedlings. Moreover, S. robustus (+) significantly reduced only the salinity of the rhizosphere for V. seyal. Sporobolus robustus could act as a nurse plant to facilitate establishment of both legumes in saline environments.

Mots-clés Agrovoc : Plante de culture associée, Prosopis juliflora, Arbuscular mycorrhiza [EN], Sol salin, Germination, Établissement de la plante, Lutte antisalinité, Mycorhization

Mots-clés complémentaires : Sporobolus robustus, Vachellia seyal

Mots-clés libres : Arbuscular mycorrhizal fungi, Facilitation, Legumes, Salinity, Survival

Classification Agris : F01 - Crops
F60 - Plant physiology and biochemistry
F08 - Cropping patterns and systems
F62 - Plant physiology - Growth and development

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Auteurs et affiliations

  • Fall Fatoumata, IRD (SEN) - auteur correspondant
  • Bakhoum Niokhor, IRD (SEN)
  • Diouf Diégane, IRD (SEN)
  • Fall Dioumacor, CNRA (SEN)
  • Le Roux Christine, CIRAD-BIOS-UMR LSTM (FRA) ORCID: 0000-0003-0668-3589
  • Bâ Amadou Moustapha, UAG (GLP)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/597060/)

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