Poster De Conférence Année : 2022

Effects of water deficit on modern French forage maize hybrids Drier: not necessarily less productive, but more digestible?

Dominique Kermarrec
  • Fonction : Auteur
  • PersonId : 1204484
Hugues Chauveau
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  • PersonId : 1438420
Sébastien Rey
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  • PersonId : 1246177
Sébastien Fargier
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  • PersonId : 1246178
Pascal Sartre
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  • PersonId : 1207192
Florence Meunier
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  • PersonId : 1207801
Anthony Uijttewaal
  • Fonction : Auteur
  • PersonId : 1358143

Résumé

Maize is a pillar of the French forage system and its feeding value is one of the criteria used for entry of hybrid varieties in the official French catalogue. This feeding value is calculated by estimating the quantity of milk produced by a kilogram of dry forage under a unit called "UFL" (milk forage equivalence unit). This criterion is directly related to dry matter digestibility, which can be improved by increasing cell wall digestibility. Since maize for cattle feeding is mainly grown under rainfed conditions, its yield is jeopardized by climate change. On the other hand, severe water deficit has been shown to increase maize cell wall digestibility, which is associated with changes in cell wall composition and histological profiles in the stem of maize inbred lines. In the frame of the MAMMA MIA project, we therefore aim to determine whether we can increase UFL while maintaining forage maize yield in the current climatic context.

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hal-04773756 , version 1 (08-11-2024)

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Oscar Main, Marie-Pierre Jacquemot, Sophie Guillaume, Yves Griveaux, Christine Horlow, et al.. Effects of water deficit on modern French forage maize hybrids Drier: not necessarily less productive, but more digestible?. 18. Eucarpia Biometrics in Plant Breeding Conference, Sep 2022, Gif-sur-Yvette, France. ⟨hal-04773756⟩
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