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Bibliothèque Influence of land use on ectomycorrhizal inoculum potential and competitivity of Tuber melanosporum ectomycorrhizas: assessment through greenhouse biassays

Influence of land use on ectomycorrhizal inoculum potential and competitivity of Tuber melanosporum ectomycorrhizas: assessment through greenhouse biassays

Influence of land use on ectomycorrhizal inoculum potential and competitivity of Tuber melanosporum ectomycorrhizas: assessment through greenhouse biassays

Resource information

Date of publication
Décembre 2006
Resource Language
ISBN / Resource ID
AGRIS:ES2006002294
Pages
308-320

Black truffle (Tuber melanosporum Vitt) is an agro-forest resource with great development potentiality in Mediterranean calcareous mountains. In this study, we analyse the ectomycorrhizal inoculum potential of the soil and the competitiveness of Tuber melanosporum ectomycorrhizas to this inoculum in the different land uses present in a truffle-producing region with the aim of assessing their suitability for establishing truffle orchards. Soil samples collected from forests, croplands and wastelands in El Toro (Valencian Region, Eastern Spain) were used to perform four greenhouse bioassays. Forest soils showed the highest ectomycorrhizal inoculum potential and produced the highest contamination levels in the mycorrhized seedlings; they were thus considered the least suitable for new truffle plantations. Greenhouse bioassays are found to be a useful methodology for studying the target variables as long as care is taken to both prevent nursery contamination and adjust the culture to the plant species.

La trufa negra (Tuber melanosporum Vitt.) es un aprovechamiento agro-forestal de gran potencialidad en comarcas de montaña calcárea mediterránea. Con el objetivo de evaluar la idoneidad de diferentes usos del suelo para la plantación trufera, se estudia el potencial de inóculo ectomicorrícico y la competitividad de las ectomicorrizas de Tuber melanosporum frente a este inóculo, para los usos del suelo más habituales en una región trufera. Se realizaron cuatro bioensayos en invernadero, con suelo forestal, agrícola y de erial de El Toro (Comunidad Valenciana, este de España). Los suelos forestales han presentado mayor potencial de inóculo y contaminaban en mayor grado las plantas micorrizadas, resultando por lo tanto los menos adecuados. Los bioensayos en invernadero se han mostrado como una metodología válida para aproximarse a las variables consideradas, aunque es necesario adoptar precauciones frente a los contaminantes de vivero y adaptar los parámetros de cultivo a la especie vegetal usada.

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Authors and Publishers

Author(s), editor(s), contributor(s)

Reyna, S., E-mail: santiago@ceam.es
García Barreda, S.
Folch, L. (Centro de Estudios Ambientales del Mediterráneo, Paterna, Valencia (España))

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