The survey of female gametophyte development and effect of Sodium Chloride stress on ontogeny of flower's components in Mentha Pulegium L.

Mentha Pulegium L. is a permanent and grassy plant which it has almost cylindrical shaped. Mentha Pulegium L. is from mint family and it uses as a condiment and medicinal herb. In Iran aboriginality this plant is belongs to the North of the country. In this study, samples were treated with concentrations 20, 50,65,80,95 mM of NaCl, young buds and flowers at different stages of development were removed, fixed in FAA, embedded in paraffin and sliced at 7-10 µm. Staining was carried out with Hematoxylin –Eosin. The best slices were studied by light microscope after staining.The results showed that ovary is created from division’s cells from middle and deep part of sporangiare meristem.In Mentha pulegium L. development of the ovary is postponed in comparison with stamen. Ovules are anatropous. Megaspore mother cell produces embryonic sac on the mature ovule by its division. Investigate the anatomical generative meristem in Mentha pulegium L., was accelerated growth of stamen primordia to carpel primordium, in the treatment of 20 mM, and 50 mM, the carpel and stamen primordia had simultaneous growth and 65, 80 and 95 mM respectively delayed initiation of petal and carpel primordia.