Authors:
Dorina PODAR, Babes-Bolyai University, Faculty of Biology-Geology, Cluj 400084, Romania. Tel/Fax: 40-264-570388
Frans JM MAATHUIS, Biology Department, University of York, York YO10 5DD, United Kingdom, Tel: 44 1904 328652, Orcid: 0000-0001-6033-6428