The development of ovule and pollen grain in Antirrhinum majus L

In this research, developmental stages of ovule and pollen grains of Antirrhinum majus from Scrophulariaceae family were studied. The flowers and buds, in different developmental stages, were removed, fixed in FAA70, stored in 70% ethanol, embedded in paraffin and then sliced at 7-10 μm by microtome. Staining was carried out with Eosin and contrasted with Hematoxylin. The prepared slides were studied using light microscope.The results indicated that anthers were tetra-sporangiate and anther tapetum type was as secretory type one. Pollen tetrads were tetragonal and tetrahedral. Cytokinesis was synchronous. Mature pollen grains, were two celled and tricolpate without any exine decorations. Ovule was anatropous, unitegumic and tenuinucellate. Embryo sac development was Polygonum type. The shape of megaspore tetrads was linear form. Functional megaspore was the chalazal one. Presence of secretory hairs or trichome in the surface of petals, filaments and pistil was these plants specific characteristic.