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Auteur A.M Zoubeirou
Documents disponibles écrits par cet auteur
Affiner la recherchePlant and Soil, N°398. Senegalia Senegal response to inoculation with rhizobial strains vary in relation to seed provenance and soil type / N Bakhoum
Plant and Soil, N°398. Senegalia Senegal response to inoculation with rhizobial strains vary in relation to seed provenance and soil type [texte imprimé] / N Bakhoum, Auteur ; D.W Odee, Auteur ; Dioumacor Fall, Auteur ; F Ndoye, Auteur ; A. Kane, Auteur ; J.M Kimiti, Auteur ; A.M Zoubeirou, Auteur ; S.N Sylla, Auteur ; K Noba, Auteur ; D. Diouf, Auteur . - 2016 . - pp181-193.
Langues : Anglais (eng)
Catégories : FORESTERIE Mots-clés : Senegal, Provenance variation, Environmental conditions . Inoculation, Acacia, Mesorhizobium, Senegal, Rhizobia Index. décimale : K030- Génétique et amélioration des plantes Résumé : The focus of the study was to determine the symbiotic and growth response of three Senegalia Senegal (Syn. Acacia Senegal, gum arabic tree) provenances, namely Dahra (Senegal), Tera (Niger) and Makueni (Kenya)
to inoculation with selected S. Senegal nodulating rhizobia in soils from Dahra and Goudiry regions of Senegal, representing typical soil and enviromental conditions for establishing gum arabic production plantations. A greenhouse experiment was performed to evaluate the effect of 11 rhizobial strains on nodulation and growth of three S. Senegal provenances in two field soils, differing in nutrient status and indigenous rhizobia. After 4 months, plants were harvested for determination of nodulation, shoot and root dry weight. Nodulation and growth of S. Senegal var- ied in relation to rhizobial strain, provenance, soil type, and their interactions. Generally, nodulation was higher in Dahra than Goudiry soils, while Makueni provenance was the most compatible host. Inoculation had a significant effect on all parameters measured in Dahra field soil. By contrast, inoculation had a significant effect on height (shoot length), and shoot, root and total dry matter but not on nodulation. In the two field soils, seed provenance effect was significant for all parameters measured. The interaction between inoculation and provenance showed a significant effect on all parameters measured except nodule number in Dahra field soil while in Goudiry, the interaction had a significant effect on seedling height and shoot, root, and total dry matter but this effect was not significant with nodulation parameters. S. Senegal is variable in its response to inoculation, it is therefore advantageous to select and match effective rhizobia provenance symbionts for each site.Exemplaires
Code-barres Cote Support Localisation Section Disponibilité FT1900019 K030- Génétique et amélioration des plantes BAK Publication CNRF Rayons Exclu du prêt Documents numériques
Cliquer pour voirURL Symbiosis, Vol 54, N° (2):. The efficiency and competitiveness of three Mesorhizobium sp. strains nodulatingAcacia senegal (L.) Willd. under water deficiency conditions in the greenhouse / D Fall
Symbiosis, Vol 54, N° (2):. The efficiency and competitiveness of three Mesorhizobium sp. strains nodulatingAcacia senegal (L.) Willd. under water deficiency conditions in the greenhouse [texte imprimé] / D Fall, Auteur ; M Ourarhi, Auteur ; M Missbah El Idrissi, Auteur ; N Bakhoum, Auteur ; A.M Zoubeirou, Auteur ; H Abdelmoumen, Auteur ; D. Diouf, Auteur . - 2011 . - pp - 87-94.
Langues : Anglais (eng)
Catégories : FORESTERIE Mots-clés : Acacia senegal, Mesorhizobium sp., Abiotic factors, Rhizobial inoculation, Drought, Competitiveness Résumé : The combined effects of drought and salinity were investigated on the growth, efficiency and competi- tiveness of three Mesorhizobium sp. strains (ORS 3416, ORS 3428 and ORS 3437) isolated from Acacia senegal (L.) Willd. Sixteen combinations of polyethylene glycol (PEG) 6000 (0, 6, 12, 20%, w/v) and NaCl (0.005, 0.5, 1, 1.5%, w/v) were used to study rhizobial strains growth in screw-capped tubes containing yeast extract mannitol liquid medium. Whatever the combination, the strains grew. However, high concentrations of PEG 6000 and NaCl were depressed on rhizobial growth but strain ORS 3428 was the most tolerant. The effect of rhizobial inoculation on growth of A. senegal plants was also examined under non-limited (100% of water holding capacity, WHC) and water-limited onditions (50% WHC) in the greenhouse for 4 months on non-sterile sandy soil. A significant decrease in the nodula- tion rate, nodule dry weight, plant height and shoot dry weight was observed under water-limited conditions. Never- theless, inoculation with the three selected Mesorhizobium strains significantly improved nodulation and A. senegal plant growth under water-limited conditions. Whatever the irrigation condition, strains ORS 3428 and ORS 3437 were more competitive than ORS 3416. These rhizobial strains may prove valuable for inoculation of Acacia senegal plants grown for transplantation to dry saline habitats. Exemplaires
Code-barres Cote Support Localisation Section Disponibilité FT1900060 FAL Publication CNRF Rayons Exclu du prêt Documents numériques
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