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Deciphering mango tree asynchronisms using Markov tree and probabilistic graphical models

Dambreville A., Fernique P., Pradal C., Lauri P.E., Normand F., Guédon Y., Durand J.B.. 2013. In : Eds. Risto Sievänen, Eero Nikinmaa, Christophe Godin, Anna Lintunen, Pekka Nygren. Proceedings of the 7th International Conference on Functional-Structural Plant Models (FSPM2013), Saariselkä, Finland, 9-14 June 2013. Vantaa : Finnish Society of Forest Science, p. 210-212. International Conference on Functional-Structural Plant Models. 7, 2013-06-09/2013-06-14, Saariselkä (Finlande).

Tree development is often characterised by complex dependencies between daughter growth units (GUs) deriving from a given mother GU, the so-called sister GUs. These dependencies directly affect the reproductive and vegetative phenological patterns that are at the origin of asynchronisms between adjacent GUs, eventually leading to within-canopy patchiness. These phenomena are rather common on tropical fruit-trees. We introduce new parsimonious statistical models to identify such dependencies. The proposed approach is illustrated on mango tree, a tropical species with a particularly complex timing of development. We focus especially on differences on fates and dates of burst between the daughter GUs issued from a same mother GU.

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