Volume 5, Issue 4 (3-2019)                   NBR 2019, 5(4): 449-457 | Back to browse issues page

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Gholipoor K, Roshandel P. Effects of seed pretreatment with 24-brassinolide on physiological and biochemical characters in tomato plants under salt stress. NBR 2019; 5 (4) :449-457
URL: http://nbr.khu.ac.ir/article-1-2900-en.html
Shahrekord University , roshandelparto@gmail.com
Abstract:   (5463 Views)

In order to study the diverse effects of seed priming with 24-epibrassinolide (EBL) (0, 0.1, 1 mg/l) to increase tolerance of tomato plants (Lycopersicon esculentum Mill.) to salinity (0, 70 and 140 mM NaCl), the experiments were conducted as factorial based on completely randomized design at greenhouse condition. Results showed that salt stress significantly decreased the growth of tomato plants. However, priming with EBL (1 mg/l) significantly decreased the negative effects of NaCl (particularly at 140 mM). At this case, EBL increased the fresh and dry weights (<2 folds), total chlorophyll (+72%), carotenoids (+ 2 folds), free proline (+3 folds), electrolyte leakage (-18.6%), Na+/K+ in the roots (-57.5%) and shoots (-62%) compared to salinity control. Generally, it could be concluded that priming with epibrassinolide resulted in enhanced salt tolerance in tomato plants via increment in free proline, photosynthetic pigments and decrease in electrolyte leakage and Na+/K+ ratio in the tissues.

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Type of Study: Original Article | Subject: Plant Biology
Received: 2017/07/13 | Revised: 2019/04/6 | Accepted: 2018/07/15 | Published: 2019/03/18 | ePublished: 2019/03/18

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