Study of effect of drought and salt stress on seed germination of Anabasis calcarea

Document Type : Research Paper

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Abstract

Germination of plants as an important growing stages, are often influenced by environmental stresses, particularly drought and salinity. In order to study the germination of Anabasis calcarea, different levels of salinity and drought in two separate experiments and in three replications, were conducted in a randomized complete design. The experiments were conducted using drought stress with 5 levels of concentration (Control, -3, -7, -11 and -18 bar) and salinity stress also were done with 6 levels (Control, -3, -7, -11, -18 and -36 bar). Drought stress induces with PEG6000 and salinity stress applied using two salts, including NaCl and mixed NaCl and Na2SO4 in ratio of 1:1. Results show that high levels of salinity and drought reduces the rate of germination, plumule and radicle length significantly (P<0.05). The germination percentage of Anabasis calcarea in drought stress of -11 bar and salinity of -18 bar in two treatments of NaCl and NaCl + Na2SO4 were 95.5%, 66.5%, and 81.8%, respectively. It can be concluded that decreasing in germination percentage of the species is due to the decrease in osmotic potential. General results show that the Anabasis calcarea is resistant to drought and salinity.

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Journal of Arid Biome
Volume 1, Issue 4 - Serial Number 4
September 2012
Pages 75-82

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