MORPHOLOGICAL AND MICROMORPHOLOGICAL INVESTIGATIONS REGARDING THE LEAVES OF SEVERAL ROSA L. SPECIES

摘要

Multicellular secretory glands are present on Rosa L. species, at least on the stipellae edge; some of them have a larger number and different particularities. The researches have been made on leaves of the following species: Rosa agrestis , R . x damascena , R. multibracteata , R. pimpinellifolia and R. rubiginosa . Micromorphological studies emphasized a large number of cells which forming both terminal secretory part and foot, even though their dimensions are small. These researches highlight the micromorphological aspect of these glands, tector hairs and epicuticular wax. All of them were examined through scanning electron microscopy method.