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Paper Information

Journal:   RANGELAND   SUMMER 2010 , Volume 4 , Number 2; Page(s) 288 To 297.
 
Paper: 

EFFECTS OF SALINITY AND DROUGHT STRESS ON TRIFOLIUM ALEXANDERIUM L. SEED GERMINATION PROPERTIES

 
 
Author(s):  TAMARTASH R.*, SHOKRIAN F., KARGAR M.
 
* SARI UNIVERSITY OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES
 
Abstract: 

In rangelands, drought and salinity are the two preventive factors for foliage production, due to their effect on seed germination and seedling emergence. In this study we evaluated the effects of salinity and drought stress on Trifolium alexandrium L. germination properties based on a completely randomized design (CRD) with four replications in water- soil and plant laboratory of Sari Natural Resource Faculty. Salinity treatments included 0, 100, 200, 300, and 400 Mm NaCl and the treatments of drought were 0, -0.3, -o.6, -0.9, and -1.2 Mpa. Salinity and drought treatments were provided from NaCl and Polyethilenglychol (PEG) 6000, respectively. Results showed that salinity and drought stress had a significant reducer effect (p<0.05) on percentage and speed of germination, vigority index, stem and root length. Germination stopped at 300 Mm NaCl while in drought stress significant difference was observed in all understudy characteristics. Results of this study indicated that Trifolium alexanderium is a sensitive species to salinity and drought stress.

 
Keyword(s): TRIFOLIUM ALEXANDERIUM, SALINITY STRESS, DROUGHT STRESS, GERMINATION, POLYETHILENGLYCHOL
 
References: 
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