... Forestier, Paris, 1989 [19] Raquin C., Jung-Muller B., Dufour J., Frascaria-Lacoste N., Rapid seedling obtaining from European ash species Fraxinus excelsior (L.) and Fraxinus angustifolia (Vahl) , ... (Pasteur Institute) for the use of their thermocycler, and Lionel Saunois for technical assistance This work is a part of the Ph.D thesis of PRG financed by the French MENRT and the French Institute ... excelsior) This can be useful for studies of hybridization in zones of sympatry and/ or of putative replacement of common ash by narrowleaved ash, for example in the context of global change Acknowledgements:...