1. Departamento de Biologia Aplicada à Agropecuária; Faculdade de Ciências Agrárias e Veterinárias; Universidade Estadual Paulista (UNESP); Jaboticabal São Paulo Brazil
2. Universidad Simón Bolívar; Barranquilla Colombia
3. Department of Plant Cytology and Embryology; Jagiellonian University in Kraków; Kraków Poland
4. Faculty of Biology; University of Warsaw; Botanic Garden Al; Ujazdowskie Warsaw Poland