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Effect of Water Stress on Seed Germination of Agropyron Elongatum, Agropyron Desertourm & Secale Montanum | ||
| Desert | ||
| مقاله 6، دوره 17، شماره 3، اسفند 2012، صفحه 249-253 اصل مقاله (44.82 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jdesert.2013.35191 | ||
| نویسندگان | ||
| E. Zandi Esfahan* 1؛ H. Azarnivand2 | ||
| 1Assistant Professor, Research Institute of Forests and Rangelands, Tehran, Iran | ||
| 2Professor, Faculty of Natural Resources, University of Tehran, Karaj, Iran | ||
| چکیده | ||
| Physiological effect of six levels of water stress (0, -0.1, -.03, -0.6, -0.9 and -1.2 MP) was studied on seed germination and plumule as well as radicule growth length in three species namely: Agropyron elongatum, Agropyron desertourm and Secale montanum. Polyethylene glycol (PEG) was used to provide appropriate water potentials. A total of 100 seeds in four replications (Petri dishes) were sown from each species. Experimental design was a factorial one of complete randomized design. Maximum germination rate was obtained at 0 MP. Germination rate and plumule and radicule growth declined with water potential level. The most resistance species to water stress are Secale montanum, Agropyron elongatum and Agropyron desertorum respectively. | ||
| کلیدواژه‌ها | ||
| water stress؛ polyethylene glycol؛ germination؛ Plumule؛ Radicule | ||
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