Differentiated dynamics of bud dormancy and growth in temperate fruit trees relating to bud phenology adaptation, the case of apple and almond trees

Autor: Majida Hafidi, Jean-Michel Legave, Gustavo Malagi, Marc Bonhomme, Adnane El Yaacoubi, Ahmed Oukabli, Idemir Citadin
Přispěvatelé: Faculty of Science, Department of Biology, Université Moulay Ismail (UMI), Universidade Federal de Pelotas = Federal University of Pelotas (UFPel), Institut national de la recherche agronomique [Maroc] (INRA Maroc), Universidade Tecnologica Federal do Parana, Laboratoire de Physique et Physiologie Intégratives de l'Arbre Fruitier et Forestier (PIAF), Institut National de la Recherche Agronomique (INRA)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), CAPES COFECUB project (686/10 - 2010–2013), PRAD project (11/08 - 2011–2013), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: International Journal of Biometeorology
International Journal of Biometeorology, Springer Verlag, 2016, 60 (11), pp.1695-1710. ⟨10.1007/s00484-016-1160-9⟩
International Journal of Biometeorology, 2016, 60 (11), pp.1695-1710. ⟨10.1007/s00484-016-1160-9⟩
ISSN: 0020-7128
1432-1254
DOI: 10.1007/s00484-016-1160-9⟩
Popis: UMR AGAP - équipe AFEF - Architecture et fonctionnement des espèces fruitières; International audience; Few studies have focused on the characterization of bud dormancy and growth dynamics for temperate fruit species in temperate and mild cropping areas, although this is an appropriate framework to anticipate phenology adaptation facing future warming contexts which would potentially combine chill declines and heat increases. To examine this issue, two experimental approaches and field observations were used for high- and low-chill apple cultivars in temperate climate of southern France and in mild climates of northern Morocco and southern Brazil. Low-chill almond cultivars offered an additional relevant plant material for comparison with apple in northern Morocco. Divergent patterns of dormancy and growth dynamics were clearly found in apple tree between southern France and southern Brazil. Divergences were less pronounced between France and Morocco. A global view outlined main differences in the dormancy chronology and intensity, the transition between endordormancy and ecodormancy and the duration of ecodormancy. A key role of bud rehydration in the transition period was shown. High-chill cultivars would be submitted in mild conditions to heterogeneous rehydration capacities linked to insufficient chill fulfillment and excessive forcing linked to high temperatures. This would favor bud competitions and consequently excessive flowering durations and weak flowering. Low chilling requirements in apple and almond would conversely confer biological capacities to tolerate superficial dormancy and abrupt transition from endordormancy to ecodormancy without important heterogeneous rehydration states within buds. It may also assume that low-chill cultivars can also tolerate high temperatures during ecodormancy as well as extended flowering durations.
Databáze: OpenAIRE
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