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Paper Information

Journal:   IRANIAN JOURNAL OF PLANT BIOLOGY   SUMMER 2012 , Volume 4 , Number 12; Page(s) 69 To 82.
 
Paper: 

THE EFFECT OF SALICYLIC ACID ON SALT STRESS REDUCTION IN CANOLA (BRASSICA NAPUS L.)

 
 
Author(s):  KIAROSTAMI KHADIJEH*, ABDOLMALEKI NASRIN, HEIDARI MORTEZA
 
* DEPARTMENT OF BIOLOGY, FACULTY OF SCIENCES, ALZAHRA UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

The seeds of two salt sensitive (Y3000 and Hayola 420) and relatively salt tolerant cultivars of canola were cultivated as a completely randomized block in a split plot. The experiment was conducted in Haji Abad village, Qom, Iran. Salicylic acid (SA) treatment was carried out with 0, 0.5 and 1.0 mM of SA solution in the early morning when the plants fourth leaf completely expanded. The samples were taken at 130 (vegetative phase), 160 (flowering phase) and 190 (harvesting phase) days after germination for analysis. The growth parameters of Hayola 420 was more affected by SA treatment, whereas 1000 seed weight increased much more in Y3000 SA did not influence carotenoids content in the treated plants. A significant increase in chlorophyll content was observed in Y3000 by the level of 0.5 mM SA, however in Hayola 420, the level of 1.0 mM SA was the most effective. Proline content tended to increase in SA treated plants but no significant difference was observed as compared with the control plants. MDA content decreased significantly in Hayola 420. SA application reduced Na+ and K+ content in roots and leaves of Y3000 respectively. In contrast, the level of Na+ was increased in leaves and decreased in roots. SA by the level of 0.5 mM increased the rate of Na+ and K+ in Hayola 420. In brief, the level of 0.5 mM SA was the most effective level and its application reduced the damaging action of salinity on canola plants especially in Hayola 420.

 
Keyword(s): SALT STRESS, PHOTOSYNTHETIC PIGMENTS, SALICYLIC ACID, CANOLA (BRASSICA NAPUS L.), IONIC CONTENT
 
References: 
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