Study on stamen and pollen grain developmental properties in Salvia verticillata L. collected from different regions of Iran

In botanical and taxonomical science embryological studies are especially important. In this research, developmental stages of Pollen grain and Stamens were studied in Salvia verticillata L of the Lamiaceae family.The flower and buds in different developmental stages were removed, fixed in FAA, stored in70% ethanol, embedded in paraffin and sliced with a microtome. Staining was done with hematoxylin and eosin. The prepared slides from different developmental stages were studied carefully using a light microscope. On the basis of this research results, for the three populations Studied,which includes Chalus, Tehran-Lavasan and Firoozkoohtangeh vashi, the organization of the sepal before the petals and the organization of the petals before the Stamens. The number of Stamens is four and didynamous. The anther was bisporangia. In S. verticillata, the tapetum was plasmodial and secretory with tetra- nucleate and binucleate cells. In species, microspore tetrads were observed with the tetrahedral and tetragonal arrangement.

Keywords:

Pollen grain , Stamen , Microspore , Salvia verticillata