University of Tehran Press Desert 2008-0875 12 1 2007 06 01 Effect of water stress on seed germination of Artemisia spicigera & Artemisia fragrans 17 21 31061 10.22059/jdesert.2008.31061 EN H. Azarnivand Assistant Professor, Faculty of Natural Resources, University of Tehran, Iran 0000-0003-0024-9060 M. Sourib Ph.D. Student of Range Management, Faculty of Natural Resources, University of Tehran, Iran V. Etemad Assistant Professor, Faculty of Natural Resources, University of Tehran, Iran Journal Article 2014 07 08 Physiological effect of five levels of water stress (0,-0.3,-6,-9 and -1.2MP) was studied on seed germination and tigella as well as radicule growth length in two different Artemisia species namely: Artemisia spicigera and Artemisia fragrans. Polyethylene glycol (PEG) was used to provide appropriate water potentials. A total of 50 seeds were sown from each Artemisia species. Experimental design was a factorial one of complete randomized design. Maximum germination rate was obtained at -0.3 MP. Germination rate, and tigella & radicule growth lengths declined with decreasing water potential level. Artemisia spicigera was more resistant to water stress in comparison with Artemisia fragrans. https://jdesert.ut.ac.ir/article_31061_bfd685335fc8efd8ca3201f28dabe7a7.pdf