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Enhancement of yield and persistence of perennial ryegrass inoculated with one endophyte isolate in France

Abstract : The contribution of Neotyphodium endophytes to the performance of perennial ryegrass in Europe is poorly documented. The objective of this study was to compare the yield and persistence of three endophyte-infected (E.I.) and endophyte-free (E.F.) perennial ryegrass cultivars. The E.I. versions were obtained by artificial inoculation of each cultivar with one isolate of Neotyphodium belonging to the second taxonomic group (LpTG-2). The field experiment was carried out for a 3-year period at five different locations in France, three of which could be considered climatically stressful for perennial ryegrass. At all locations, the endophyte enhanced the productivity of each cultivar in the second year after sowing; moreover, it generally improved their persistence in stressful environments. These results show that endophyte infection can increase the ecological fitness of perennial ryegrass. Thus, plant breeders can use endophytes to improve perennial ryegrass, provided that the strains involved produce no or low levels of toxins dangerous for mammals. (© 1999 Inra/Éditions scientifiques et médicales Elsevier SAS.)
Keywords : RAY GRASS ANGLAIS
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  • PRODINRA : 51893

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C. Ravel, François Balfourier, J.J. Guillaumin. Enhancement of yield and persistence of perennial ryegrass inoculated with one endophyte isolate in France. Agronomie, EDP Sciences, 1999, 19 (7), pp.635-644. ⟨hal-02698485⟩

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