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The effect of time and type of salicylic acid application on growth trend, yield and yield components of barley (Hordeum vulgare L.) under salinity tension conditions
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S.E. Hashemi   , Y. Emam * , H. Pirasteh Anosheh |
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Abstract: (3846 Views) |
| To evaluate the effect of time and type of salicylic acid application on growth trend, yield and yield components of barley plant Reyhane cultivar, a factorial experiment was carried out as a completely randomized design with four replications under controlled conditions at College of Agriculture of Shiraz University. The experimental treatments consisted of five levels of salicylic acid application (control, priming, and foliar application at early tillering, double ridge and anthesis stages) with 1.5 mM concentration and salinity tension levels (control, 6 and 12 dS per meter). The results showed that salinity tension decreased grain number per ear (52.2 percentage), one-thousand grain weight (7.0 percentage), grain yield (30.0 percentage), biologic yield (13.0 percentage) and harvest index (19.7 percentage) and salicylic acid application at all levels improved the above mentioned traits in barley plants. Changing trend of plant height, leaf area and dry matter of barley plants were also influenced by significant and positive effect of salicylic acid application in both priming and foliar application method. The highest positive impact of salicylic acid on growth and yield was observed in priming and foliar application at early tillering stage so that seed priming under no-tension, moderate and severe salinity conditions caused 7.7, 21.1 and 60.6 percentage increasing in grain yield, respectively. These amounts were 30.5, 29.1 and 61.6 percentage for foliar application at early tillering stage, respectively. Overall, the results of this research indicated that salicylic acid application, especially at early stages, can alleviate the adverse effects of salinity tension in barley plant. |
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| Keywords: Priming, Harvest index, Foliar application, One-thousand grain weight. |
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Full-Text [PDF 501 kb]
(3264 Downloads)
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Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2015/06/27 | Accepted: 2015/06/27 | Published: 2015/06/27
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