assessment of seed germination and dormancy of thirty seeds lots of

most seeds of medicinal plants due to ecological adaptation to environmental conditions have several types of dormancy. hence, it's necessary to recognize ecological factors that affect dormancy and provide optimum conditions for germination in medicinal plant species. thirty seed lots were used to estimate germination and dormancy of medicinal plants. treatments were kno3, (2%) and scarification of seeds by sand paper, hypochlorite sodium and removing the seed coat with four replicates of 25 seeds. maximum and minimum germination observed in h2o for digitalis purpure 100% and saponaria officinalis 0%. in kno3 treatment, portulaca oleracea had the highest germination of 91% and hyocyamus niger had no any germinated seeds. in sand paper treatment, the saponaria officinalis and datura stramonium had maximum, 33% and minimum 0% germination respectively.