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		| Philippe  Le Coent | 
	
		| Université Montpellier 1, UMR 5474 LAMETA, F-34000 Montpellier, France | 
	
		| philippe.le-coent@supagro.inra.fr | 
	
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		| Raphaële  Préget | 
	
		| INRA, UMR 1135 LAMETA, F-34000 Montpellier, France | 
	
		| preget@supagro.inra.fr | 
	
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		| Third Author: 
 
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		| Sophie  Thoyer | 
	
		| Montpellier SupAgro, UMR 1135 LAMETA, F-34000 Montpellier, France | 
	
		| thoyer@supagro.inra.fr | 
	
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