MORPHOLOGICAL STUDIES ON LEAF, POLLEN GRAIN AND SEED OF GENUS Oenothera L. IN EGYPT BY USING SCANNING ELECTRON MICROSCOPE "SEM"

Abstract

This study was performed on three species of the genus Oenothera in Egypt. These species are; O. biennis, O. drummondii and O. speciosa. The aim of this study was to distinguish the similarity and dissimilarity between these species. This study includes a number of taxonomic evidences and characters to establish the relationships among the above mentioned species. These characters were; 1) the morphological descriptions of the whole plants representing these species, 2) morphological descriptions and Scanning Electron Microscope (SEM) survey on the leaf, pollen grain and seed surfaces of the studied species. .Then proposed keys were designed.