Effect of Water Stress on Seed Germination of Agropyron Elongatum, Agropyron Desertourm & Secale Montanum

Authors

  • E. Zandi Esfahan Assistant Professor, Research Institute of Forests and Rangelands, Tehran, Iran
  • H. Azarnivand Professor, Faculty of Natural Resources, University of Tehran, Karaj, Iran
Abstract:

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.

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Journal title

volume 17  issue 3

pages  249- 253

publication date 2012-12-01

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