Journal of Food, Agriculture and Environment

Effects of osmopriming on drought stress tolerance of perennial rye (Secale montanum Guss.) during germination

Author(s):

Rouhollah Amini

Recieved Date: 2011-07-10, Accepted Date: 2011-10-10

Abstract:

Seed priming has been suggested to improve germination performance under drought stress. The objective of this study was to evaluate the effects of osmopriming on drought stress tolerance of perennial rye (Secale montanum Guss.). The experiment was including four levels of seed osmopriming (0, -11, -13 and -15 MPa) and four levels of drought stress (0, -4, -8 and -12 MPa) that were imposed by polyethylene glycol (PEG 6000). At all drought stress potentials, the osmopriming increased the perennial rye seed germination rate and percentage, root and shoot length. At high drought stress potential (-12 MPa) the primed seeds with -15 MPa had the greatest germination rate and percentage. Also at low drought stress potential (-4 MPa) the greatest root and shoot length was observed when the seeds were primed with -15 MPa. The root and shoot length of the primed seeds with -11, -13 and -15 MPa were not significantly different at high drought stress potential (-12 MPa). Therefore, the osmopriming can be used as a technique to improve the germination and early growth of perennial rye under drought stress.

Keywords:

Drought stress, germination, osmopriming, perennial rye, polyethylene glycol (PEG)

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Journal: Journal of Food, Agriculture and Environment
Year: 2011
Volume: 9
Issue: 3&4
Category: Agriculture
Pages: 305-308

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