1. Istituto Sperimentale per la Elaiotecnica, Contrada Fonte Umano 37, 65013 Città Sant'Angelo (PE), Italy; ICRAF-Sahel, B.P. 320, Bamako, Mali; and Phyto-Lipid Biotechnology Laboratory, Department of Biotechnology Engineering, Ben Gurion University of the Negev, Beer Sheva 84105, Israel