Several experiments, mostly carried out under controlled conditions, have shown that arbuscular mycorrhizal (AM) symbiosis enhances nutrient uptake and improves drought tolerance of host plants. The present research, carried out in a typical Mediterranean environment, evaluated the effect of AM symbiosis on berseem clover (Trifolium alexandrinum L.) grown in the field under both late drought stress and well-watered conditions. The crop was subjected to repeated defoliation. N2 fixation was estimated using the 15N dilution method and using ryegrass (Lolium multiflorum var. Westervoldicum) as the reference crop. In late drought conditions, AM symbiosis resulted in a significant increase in biomass yield, total N uptake, total amount of N fixed, and proportion of N derived from the atmosphere. The results suggest that AM symbiosis could play a key role in alleviating the stress effects of late drought on berseem forage production in the field.

Saia, S., Ruisi, P., Amato, G., Giambalvo, D. (2010). Effects of arbuscular mycorrhizal symbiosis on growth and N2 fixation of Trifolium alexandrinum under late drought stress conditions.. In Grassland Science in Europe, vol. 15 (pp.842-844). Duderstadt : Mecke Druck und Verlag.

Effects of arbuscular mycorrhizal symbiosis on growth and N2 fixation of Trifolium alexandrinum under late drought stress conditions.

SAIA, Sergio;RUISI, Paolo;AMATO, Gaetano;GIAMBALVO, Dario
2010-01-01

Abstract

Several experiments, mostly carried out under controlled conditions, have shown that arbuscular mycorrhizal (AM) symbiosis enhances nutrient uptake and improves drought tolerance of host plants. The present research, carried out in a typical Mediterranean environment, evaluated the effect of AM symbiosis on berseem clover (Trifolium alexandrinum L.) grown in the field under both late drought stress and well-watered conditions. The crop was subjected to repeated defoliation. N2 fixation was estimated using the 15N dilution method and using ryegrass (Lolium multiflorum var. Westervoldicum) as the reference crop. In late drought conditions, AM symbiosis resulted in a significant increase in biomass yield, total N uptake, total amount of N fixed, and proportion of N derived from the atmosphere. The results suggest that AM symbiosis could play a key role in alleviating the stress effects of late drought on berseem forage production in the field.
Settore AGR/02 - Agronomia E Coltivazioni Erbacee
1-set-2010
Grassland in a changing world - 23rd General Meeting of the European Grassland Federation
Kiel (D)
29 agosto-2 settembre 2010
2010
3
Saia, S., Ruisi, P., Amato, G., Giambalvo, D. (2010). Effects of arbuscular mycorrhizal symbiosis on growth and N2 fixation of Trifolium alexandrinum under late drought stress conditions.. In Grassland Science in Europe, vol. 15 (pp.842-844). Duderstadt : Mecke Druck und Verlag.
Proceedings (atti dei congressi)
Saia, S; Ruisi, P; Amato, G; Giambalvo, D
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/51400
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