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Abbasdokht, H., Edalatpisheh, M. (2012). The Effect of Priming and Salinity on Physiological and Chemical Characteristics of Wheat (Triticum aestivum L.). Desert, 17(2), 183-192. doi: 10.22059/jdesert.2013.32034
H. Abbasdokht; M.R. Edalatpisheh. "The Effect of Priming and Salinity on Physiological and Chemical Characteristics of Wheat (Triticum aestivum L.)". Desert, 17, 2, 2012, 183-192. doi: 10.22059/jdesert.2013.32034
Abbasdokht, H., Edalatpisheh, M. (2012). 'The Effect of Priming and Salinity on Physiological and Chemical Characteristics of Wheat (Triticum aestivum L.)', Desert, 17(2), pp. 183-192. doi: 10.22059/jdesert.2013.32034
Abbasdokht, H., Edalatpisheh, M. The Effect of Priming and Salinity on Physiological and Chemical Characteristics of Wheat (Triticum aestivum L.). Desert, 2012; 17(2): 183-192. doi: 10.22059/jdesert.2013.32034

The Effect of Priming and Salinity on Physiological and Chemical Characteristics of Wheat (Triticum aestivum L.)

Article 14, Volume 17, Issue 2, Summer and Autumn 2012, Page 183-192  XML PDF (169.91 K)
Document Type: Research Paper
DOI: 10.22059/jdesert.2013.32034
Authors
H. Abbasdokht* 1; M.R. Edalatpisheh2
1Associate Professor, Shahrood University of Technology, Shahrood, Iran
2Ph.D. student, Queen’s land University, Australia
Abstract
In order to study of the effect of priming and salinity on physiological and chemical characteristics of wheat
(Triticum aestivum L.), an experiment was carried out at the Experimental Farm of Shiraz University. Results showed
that primed plants significantly reduced its gas exchanges by accelerating senescence under a series of salt stress,
which became more serious along with the increasing of salt concentrations, especially at 21 d after anthesis. Under
each level of salt stress, dry matter accumulation of primed plants was always higher than the non-primed plants.
Primed plants had higher potassium selectivity against sodium than non-primed plants with the former could maintain
relatively stable balance of ions, potassium/sodium was found not to be the limited factor for salt tolerant plants, but
it was in salt-sensitive plants. Net photosynthesis (Pn) significantly positively correlated with leaf potassium/sodium
(K+/Na+), relative water content (RWC), and leaf area duration (P < 0.01). So those four parameters might be ideal
criterions of salt tolerance in wheat. In conclusion, salt stresses caused significant declines in growth period of wheat
by accelerating leaf senescence at reproductive stage. Primed plants of wheat successfully preserved normal growth
by maintaining Pn, K+/Na+, leaf area duration (LAD) and dry matter accumulation (DMA), while non-primed plants
decreased considerably in those parameters. The improvement of photosynthesis and related traits in reproductive
stage was a key to the growth of wheat under saline conditions.
Keywords
Priming; salinity; Wheat; Physiological and Chemical Characteristics
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