Leaf Area Index, a good functional trait for screening genetic diversity of Winter Oil Seed Rape response to N constraint : Study of a panel of 95 genotypes - Institut Agro Rennes-Angers Accéder directement au contenu
Communication Dans Un Congrès Année : 2011

Leaf Area Index, a good functional trait for screening genetic diversity of Winter Oil Seed Rape response to N constraint : Study of a panel of 95 genotypes

G. Guernec
  • Fonction : Auteur
F. Andrianasolo
  • Fonction : Auteur
A. C. Viera de Oliviera
  • Fonction : Auteur
M. Orsel
M. Bregeon
  • Fonction : Auteur
E. Bloquel
  • Fonction : Auteur
Y. Fauvel
  • Fonction : Auteur
B.T. Rinkler
  • Fonction : Auteur
Nathalie Nesi

Résumé

Economic competitiveness and environmental sustainability of winter oilseed rape (WOSR) depend on improvement or maintain of the crop yield under low nitrogen (N) fertilisation. Cultivars with higher N use efficiency (NUE) might be characterized (i) by higher leaf expansion and N uptake efficiency until flowering and/or (ii) by longer duration of leaf area (LAI) and photosynthetic activity, and/or (iii) by more efficient remobilisation of N reserves from source leaves to sink organs during reproductive growth phase. We investigated for a large range of WOSR genetic diversity, whether characteristics linked with changes in LAI establishment and duration could be related to high NUE (i.e. high seed yield at low N supply) or N uptake and utilisation.
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Dates et versions

hal-00849121 , version 1 (30-07-2013)

Identifiants

  • HAL Id : hal-00849121 , version 1
  • PRODINRA : 315394

Citer

Christine Bissuel, Anne Laperche, G. Guernec, F. Andrianasolo, A. C. Viera de Oliviera, et al.. Leaf Area Index, a good functional trait for screening genetic diversity of Winter Oil Seed Rape response to N constraint : Study of a panel of 95 genotypes. Prague13th International Rapeseed Congress, 2011, Prague (CZ), Czech Republic. ⟨hal-00849121⟩
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