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Titre du document / Document title

Nutrient use efficiency and arbuscular mycorrhizal root colonisation of winter wheat cultivars in different farming systems of the DOK long-term trial

Auteur(s) / Author(s)

HILDERMANN Isabell (1) ; MESSMER Monika (1) ; DUBOIS David (2) ; BOLLER Thomas (3) ; WIEMKEN Andres (3) ; MÄDER Paul (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Research Institute of Organic Agriculture FiBL, Ackerstrasse, 5070 Frick, SUISSE
(2) Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, 8046 Zürich, SUISSE
(3) Botanical Institute,University of Basel, Section of Plant Physiology,Hebelstrasse 1, 4056 Basel, SUISSE

Résumé / Abstract

BACKGROUND: For organic farming, cultivars are required with high nutrient use efficiency under nutrient limited conditions. Arbuscular mycorrhizal fungi (AMF) are known to contribute to nutrient uptake under low input conditions. We compared nutrient use efficiency (NUE) of old and modern organically and conventionally bred cultivars in organic and conventional systems and assessed AMF-root colonisation (AMF-RC) in relation to nutrient concentrations. RESULTS: Cultivars and systems had a statistically significant effect on nitrogen (N) and phosphorus (P) concentrations and NUE parameters, whereas no genotype x environment interactions appeared. In contrast to N and P uptake, the NUE parameters were higher under organic than under conventional conditions. NUE for N increased with the year of release of cultivars. In the organic systems, the organically bred cultivars could not outperform the conventionally bred cultivars in grain yield and NUE parameters. AMF-RC was higher in the organic than in the conventional system, but did not differ among cultivars. CONCLUSION: Cultivars achieving high NUE in the organic systems were found among modern cultivars, irrespective of the breeding programme. Nutrient conditions during the breeding programme did not affect AMF-RC. No clear evidence was found that AMF symbiosis contributed more to nutrient concentrations under low input than under high input conditions.

Revue / Journal Title

Journal of the science of food and agriculture    ISSN  0022-5142   CODEN JSFAAE 

Source / Source

2010, vol. 90, no12, pp. 2027-2038 [12 page(s) (article)] (73 ref.)

Langue / Language

Anglais

Editeur / Publisher

Wiley, Malden, MA, ETATS-UNIS  (1950) (Revue)

Mots-clés anglais / English Keywords

Cereal

;

Fungi

;

Farming

;

Long term

;

Farming system

;

Cultivar

;

Wheat

;

Root

;

Plant part

;

Efficiency

;

Use

;

Nutrient

;

Mots-clés français / French Keywords

Céréale

;

Fungi

;

Exploitation agricole

;

Long terme

;

Système exploitation agricole

;

Cultivar

;

Blé

;

Racine

;

Partie de plantes

;

Efficacité

;

Utilisation

;

Nutriment

;

Mots-clés espagnols / Spanish Keywords

Cereal

;

Fungi

;

Explotación agrícola

;

Largo plazo

;

Sistema de explotación agrícola

;

Cultivar

;

Trigo

;

Raíz

;

Parte planta

;

Eficacia

;

Uso

;

Nutriente

;

Mots-clés d'auteur / Author Keywords

Organic farming

;

plant breeding

;

winter wheat

;

nutrient use efficiency

;

arbuscular mycorrhizal fungi

;

Localisation / Location

INIST-CNRS, Cote INIST : 2634, 35400019180729.0110

Nº notice refdoc (ud4) : 23092247



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