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Tamarind (Tamarindus indica L.) parklandmycorrhizal potential within three agro-ecological zones of Senegal

Published online by Cambridge University Press:  06 December 2010

Sali Bourou ,
Fatimata Ndiaye ,
Macoumba Diouf ,
Tahir Diop  and
Patrick Van Damme
Sali Bourou
Affiliation:
Inst. Sénégal. Rech. Agric. (ISRA), Cent. Etude Rég. Amélior. Adapt. Sécheresse (CERAAS), BP 3320, Thiès, Sénégal, Inst. Agric. Res. Dev., BP 415, Garoua, Cameroon
Fatimata Ndiaye
Affiliation:
Inst. Sénégal. Rech. Agric. (ISRA), Lab. Natl. Rech. Prod. Vég. (LNRPV), BP 3120, Dakar Bel Air, Sénégal
Macoumba Diouf
Affiliation:
Inst. Sénégal. Rech. Agric. (ISRA), Cent. Etude Rég. Amélior. Adapt. Sécheresse (CERAAS), BP 3320, Thiès, Sénégal,
Tahir Diop
Affiliation:
Cheikh Anta Diop Univ., Lab. Biotechnol. Champignons, BP 5005, Dakar, Sénégal
Patrick Van Damme
Affiliation:
Univ. Ghent, Fac. Biosci. Eng., Coup. Links 653, B-9000 Ghent, Belgium
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Abstract

Introduction. Tamarind (Tamarindus indica L.) belongs tothe Fabaceae family; it is a multipurpose tree with slow growth. In order to help improveits growth and development, we assessed mycorrhizal diversity of tamarind parklands inSenegal. Materials and methods. Three sites of tamarind populations weresampled for each agro-ecological zone in Senegal: the Sahelian zone (i), Sahelo-Sudan zone(ii) and Sudan zone (iii). Soil and root samples were collected in each site and used forarbuscular mycorrhizal (AM) spore isolation and root colonization assessment. Weidentified the mycorrhizal fungi from spore collections and evaluated the rootmycorrhization rate, defined as percentage of roots colonized according to agro-ecologicalzones. Results and discussion. The results did not reveal a specific AMfungal strain associated with tamarind plants. Three arbuscular mycorrhizal fungi (AMF)were identified from spores on the genus level: Glomus,Scutellospora and Acaulospora. Tamarind sites withsandy soil texture (70–90%) and located in dry areas (Sahel and Sudano-Sahel zones) wereshown to be rich in mycorrhizal propagules. High densities of soil AM propagules evaluatedwith the Most Probable Number method (MPN) were found in Niokhoul (1100 propagules per 50g of soil), Sakal (790 propagules per 50 g of soil) and Mbassis (780 propagules per 50 gof soil). However, higher mycorrhizal colonization (11%) was observed in the Sahelagro-ecological zone compared with the Sudano-Sahelian and Sahelian zones (3%) of Senegal.Conclusion. Our study explored natural AMF diversity as a starting point todevelop inocula to be used in commercial nursery production of tamarinds.

Keywords

SenegalTamarindus indicaarbuscular mycorrhizaesymbiosisfungal sporesbiodiversitySénégalTamarindus indicamycorhize à arbusculesymbiosespore fongiquebiodiversitéSenegalTamarindus indicamicorrizas arbuscularessimbiosisesporas fúngicasbiodiversidad

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Type
Original article
Information
Fruits , Volume 65 , Issue 6 , November 2010 , pp. 377 - 385
Copyright
© 2010 Cirad/EDP Sciences

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