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South African Journal of Botany, Vol 119. ). Senegalia senegal (synonym: Acacia senegal), its importance to sub-Saharan Africa, and its relationship with a wide range of symbiotic soil microorganisms. / N Bakhoum
South African Journal of Botany, Vol 119. ). Senegalia senegal (synonym: Acacia senegal), its importance to sub-Saharan Africa, and its relationship with a wide range of symbiotic soil microorganisms. [texte imprimé] / N Bakhoum, Auteur ; D Fall, Auteur ; F Fall, Auteur ; F Diouf, Auteur ; A.M Hirsch, Auteur ; D Balachandar, Auteur ; D. Diouf, Auteur . - 2018 . - pp-362-368.
Langues : Anglais (eng)
Catégories : FORESTERIE Exemplaires
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Cliquer pour voirURL Springer Science Business Media Dordrecht. Genetic diversity of Jatropha curcas L. in Senegal compared with exotic accessions based on microsatellite markers / Ouattara, B
Springer Science Business Media Dordrecht. Genetic diversity of Jatropha curcas L. in Senegal compared with exotic accessions based on microsatellite markers [texte imprimé] / Ouattara, B, Auteur ; Ndir Ndoye, K, Auteur ; M. C. Gueye, Auteur ; I. Diedhiou, Auteur ; A Barnaud, Auteur ; Daniel Fonceka, Auteur ; Nd. Cissé, Auteur ; E. L. Akpo, Auteur ; D. Diouf, Auteur . - (SN) : ISRA/CERAAS, 2014 . - 07p.
Langues : Anglais (eng)
Catégories : FORESTERIE Mots-clés : Diversité Génétique, Jatropha Curcas, Micro satellite, Sénégal Index. décimale : K110-Génie forestier Exemplaires
Code-barres Cote Support Localisation Section Disponibilité CR1400001 K110- OUA Article scientifique CERAAS/Thiès Rayons Exclu du prêt Documents numériques
Cliquer pour voir pdfURL 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
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Cliquer pour voirURL Systematic and Applied Microbiology,, Vol 42, n°(2):. The rhizosphere of the halophytic grass Sporobolus robustus Kunth hosts rhizobium genospecies that are efficient on Prosopis juliflora (Sw.) DC and Vachellia seyal (Del.) seedlings. / F Fall
Systematic and Applied Microbiology,, Vol 42, n°(2):. The rhizosphere of the halophytic grass Sporobolus robustus Kunth hosts rhizobium genospecies that are efficient on Prosopis juliflora (Sw.) DC and Vachellia seyal (Del.) seedlings. [texte imprimé] / F Fall, Auteur ; Bâ A.M., Auteur ; C Le Roux, Auteur ; D Fall, Auteur ; N Bakhoum, Auteur ; M.N Faye, Auteur ; A. Kane, Auteur ; I. Ndoye, Auteur ; D. Diouf, Auteur . - 2019 . - pp-232-239.
Langues : Anglais (eng)
Catégories : FORESTERIE Exemplaires
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Cliquer pour voirURL Thèse: Doctor of Philosophy in Resources and Environnemental Conservation. Morphological and Physiological Responses of Senegalia senegal (L.) Britton Provenances to Drought, Salinity, and Fertility / Mame Sokhna SARR
Thèse: Doctor of Philosophy in Resources and Environnemental Conservation. Morphological and Physiological Responses of Senegalia senegal (L.) Britton Provenances to Drought, Salinity, and Fertility [texte imprimé] / Mame Sokhna SARR, Auteur . - USA : [USA] Faculty of Virginia Polytehnic Institute and State University, Mars 2017 . - 121 p. : ref; bibl; cart.
Langues : Anglais (eng)
Catégories : FORESTERIE Mots-clés : Gum arabic, Senegalia senegal, provenance, drought, salinity, fertility, water use efficiency. Index. décimale : K030- Génétique et amélioration des plantes Résumé : Increasing drought and salinity tolerances in economically important trees adapted to dry land areas is key challenge for maintaining the socioeconomic welfare of dry land areas. Strategies to improve drought and salt tolerance must examine the tree physiological mechanisms that link to the trees survival and growth. This study examined physiological adaptive traits allowing Senegalia senegal to grow better in both saline and dry lands. We conducted two greenhouse experiments and one field study to characterize growth, photosynthetic capacity, water use efficiency (WUE) and gum arabic yield potential among different Senegalia senegal provenances. In the first experiment, we tested early growth and photosynthetic response of seed sources to a cyclic drought treatment. The second greenhouse study examined seed source response to drought, salinity and fertility conditions. Gum yield assessment, growth and WUE of mature trees were determined from a field trial. In general, results showed a high intra genetic variability of Senegalia senegal on gum yield, biomass accumulation and growth. Ngane provenance presented superior growth characteristics as both mature trees and seedlings and exhibited a more conservative water use strategy under drought. Both greenhouse studies revealed similar photosynthetic capacity among III Senegalia senegal genotypes when conditions are not limiting. However, when factors such as salinity, fertility and severe drought are involved, different physiological and morphological responses appear and at times this was dependent on seed source. But, at moderate drought stress (chapter 2), no drought by provenance interaction was found. Results of chapter 3 revealed that Ngane has larger stomata with low density in comparison with Diamenar and Kidira provenances. With the exception of Ng21B1, all seed sources displayed similar adaptations to salt stress in term of biomass accumulation. Fertilizer increased total biomass of all seed sources from 63% to 213% for Ng21B1 and K17B19, respectively. However, salinity reduced the fertilizer effect on biomass increment. Leaf gas exchanges were affected by salinity and fertilizer within various responses among seed sources. Results of chapter 4 revealed that gum yield was found to be positively correlated with tree height, crown width, stem volume index and crown area index. Ngane and Diamenar appeared the best provenances in term of annual gum yield per hectare. Diamenar had a higher survival rate than Ngane. This finding reveals the need to consider the tradeoff between tree survival rate and individual tree gum yield in Senegalia senegal stands. In addition to being more sensitive to salinity, Ngane also seems to be more susceptible to low soil pH in terms of survival, but this result needs to be tested further.
This study suggests that improvement of gum arabic production can be possible through genetic selection. But, for the best adapted genotypes, research should explore new genetic combination and investigate physiology and genetic diversity. Moreover, the findings on the relationship between soil pH and tree survival rate suggests a need for care in selecting appropriate sites for Senegalia senegal stands. Therefore, silviculture practices as well as genetic selection appear critical in improving gum arabic production.Exemplaires
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Cliquer pour pdfURL These (Ph.D.). Influence de Cordyla pinnata sur la fertilité d'un sol ferrigineux tropical et sur le Mil et l'Arachide dans un système agroforestier traditionnel au Sénégal / Arona Ndiaye Samba Samba
PermalinkTree Genetics & Genomes. Study of quantitative genetics of gum arabic production complicated by variability in ploidy level of Acacia senegal (L.) Willd / Adia Madjiguène Diallo
PermalinkTropicultura, Vol 19; N°1. Microgreffage de quatre espèces ligneuses sahéliennes (Acacia senegal, Faidherbia albida, Tamarindus indica et Ziziphus mauritiana) en vue de leur rajeunissement / P. Danthu
PermalinkTropicultura, Vol 31; N°1. Importance de la méthode de coupe sur la régénération de Combretaceae du Bassin arachidier sénégalais / E. Faye
PermalinkVertigO - la revue électronique en sciences de l'environnement. Réponse de quatre variétés de Anacardium occidentale L. aux techniques de greffage horticole en pépinière / Mamoudou Abdoul Touré
PermalinkVertigO - la revue électronique en sciences de l'environnement, Vol 18, n° 2. Impact des modes de gestion des parcs arborés sur la dynamique des paysages agricoles, un cas d’étude au Sénégal / Marame Ba
PermalinkWorld Agroforestry Centre. Préserver les réserves sylvo-pastorales inter-villageoises dans le Bassin arachidier au Sénégal : quelle stratégie durable / Diaminatou Sanogo
PermalinkWorld Journal of Microbiology and Biotechnology, N°28:. Impact of rhizobial inoculation on Acacia senegal (L.) Willd. growth in greenhouse and soil functioning in relation to seed provenance and soil origin. / N Bakhoum
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