[1]ICAAM–Mediterranean Institute of Agronomical and Environmental Sciences Institute for Advanced Research and Formation évora University Pólo da Mitra Ap. 94 7006-554 évora Portugal;
[2]Plant Molecular Biology and Biotechnology Laboratory Unit of Molecular Biology and Plant Biotechnology (BioFIG) FCUL Campus C2.2.12 Campo Grande 1749-016 Lisboa Portugal;
[3]Plant Science Department ICAAM Science and Technology School évora University Pólo da Mitra Ap. 94 7006-554 évora Portugal;
Aragonez; Trincadeira; grapevine; megasporogenesis; somatic embryogenesis;