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Nutrient use efficiency and arbuscular mycorrhizal root colonisation of winter wheat cultivars in different farming systems of the DOK long-term trial
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 487772
Author(s) Hildermann, Isabell; Messmer, Monika; Dubois, David; Boller, Thomas; Wiemken, Andres; Mäder, Paul
Author(s) at UniBasel Boller, Thomas
Wiemken, Andres M.
Year 2010
Title Nutrient use efficiency and arbuscular mycorrhizal root colonisation of winter wheat cultivars in different farming systems of the DOK long-term trial
Journal Journal of the Science of Food and Agriculture
Volume 90
Number 12
Pages / Article-Number 2027-38
Keywords Organic farming, plant breeding, winter wheat, nutrient use efficiency, arbuscular mycorrhizal fungi
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.

Publisher Wiley Interscience
ISSN/ISBN 1097-0010
URL http://onlinelibrary.wiley.com/doi/10.1002/jsfa.4048/abstract
edoc-URL http://edoc.unibas.ch/dok/A5842297
Full Text on edoc No
Digital Object Identifier DOI 10.1002/jsfa.4048
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/20582996
ISI-Number WOS:000281332000011
Document type (ISI) Journal Article
 
   

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