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Effect of water stress on seed germination of Artemisia spicigera & Artemisia fragrans | ||
| Desert | ||
| مقاله 3، دوره 12، شماره 1، شهریور 2007، صفحه 17-21 اصل مقاله (103.92 K) | ||
| شناسه دیجیتال (DOI): 10.22059/jdesert.2008.31061 | ||
| نویسندگان | ||
| H. Azarnivand* 1؛ M. Sourib2؛ V. Etemad1 | ||
| 1Assistant Professor, Faculty of Natural Resources, University of Tehran, Iran | ||
| 2Ph.D. Student of Range Management, Faculty of Natural Resources, University of Tehran, Iran | ||
| چکیده | ||
| 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. | ||
| کلیدواژه‌ها | ||
| water stress؛ polyethylene glycol؛ germination؛ Tigella؛ Radicule | ||
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