About the Authors

Isabelle d'Erfurth

Affiliation French National Institute for Agricultural Research (INRA), UR254, Versailles, France

Sylvie Jolivet

Affiliation French National Institute for Agricultural Research (INRA), UR254, Versailles, France

Nicole Froger

Affiliation French National Institute for Agricultural Research (INRA), UR254, Versailles, France

Olivier Catrice

Affiliation National Center for Scientific Research (CNRS), UPR2355, Gif sur Yvette, France

Maria Novatchkova

Affiliation Research Institute of Molecular Pathology (IMP), Vienna, Austria

Mathieu Simon

Affiliation French National Institute for Agricultural Research (INRA), UR254, Versailles, France

Eric Jenczewski

Affiliation French National Institute for Agricultural Research (INRA), UR254, Versailles, France

Raphaël Mercier

rmercier@versailles.inra.fr

Affiliation French National Institute for Agricultural Research (INRA), UR254, Versailles, France

Competing Interests

A patent has been deposited by INRA on the 8th of July 2008 (Plants producing 2n pollen; 08290672.8).

Author Contributions

Conceived and designed the experiments: IdE EJ RM. Performed the experiments: IdE SJ NF OC MN RM. Analyzed the data: IdE MN EJ RM. Contributed reagents/materials/analysis tools: MS. Wrote the paper: IdE EJ RM.