Ndoye F., Kane A., Bakhoum N., Sanon Arsène, Fall D., Diouf D., Sylla S. N., Ba Amadou, Sy M. O., Noba K. (2013). Response of Acacia senegal (L.) Willd. to inoculation with arbuscular mycorrhizal fungi isolates in sterilized and unsterilized soils in Senegal. Agroforestry Systems, 87 (4), p. 941-952. ISSN 0167-4366.
Titre du document
Response of Acacia senegal (L.) Willd. to inoculation with arbuscular mycorrhizal fungi isolates in sterilized and unsterilized soils in Senegal
Année de publication
2013
Auteurs
Ndoye F., Kane A., Bakhoum N., Sanon Arsène, Fall D., Diouf D., Sylla S. N., Ba Amadou, Sy M. O., Noba K.
Source
Agroforestry Systems, 2013,
87 (4), p. 941-952 ISSN 0167-4366
The benefits of inoculation with six arbuscular mycorrhizal fungi (AMF) isolates (Glomus aggregatum, G. fasciculatum, G. intraradices, G. manihotis, G. mosseae, and G. verriculosum) were investigated on seedlings of Acacia senegal (L.) Willd., a multipurpose tree legume highly valued for arabic gum production. Mycorrhizal root colonization, plant growth and relative mycorrhizal dependency (RMD) were measured in A. senegal seedlings growing in soils from three geographical sites in Senegal (Dahra, Bambey and Goudiry) and two soil conditions (sterilized vs unsterilized) in the glasshouse. The impact of inoculation on mycorrhizal root colonization and plant growth depended on AMF isolates, soil origins and soil conditions. Mycorrhizal root colonization and plant growth were increased in sterilized soils regardless of soil origin and AMF isolates. The degree of RMD of A. senegal seedlings varied with soil origin, soil condition and AMF isolates. A. senegal showed the highest RMD values, reaching a maximum of 45 %, when inoculated with G. manihotis. However, in unsterilized soils, no significant effect of AMF inoculation on plant growth was observed despite significant root colonization with certain AMF isolates in Dahra and Goudiry soils. This indicates that the most infective AMF isolates were not the most effective and unsterilized soils may contain effective mycorrhizal propagules. In conclusion, it is important to consider the native mycorrhizal component of the soils before harnessing mycorrhizal inoculation programs for sustainable agroforestry systems.
Plan de classement
Pédologie [068]
;
Sciences du monde végétal [076]
;
Biotechnologies [084]
Description Géographique
SENEGAL
Localisation
Fonds IRD [F B010060473]
Identifiant IRD
fdi:010060473
