Volume 9, Issue 35 (vol. 9, no. 35 2020)
2020, 9(35): 243-258 |
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Rezabeigi S, Bijanzadeh E, Behpouri A. Effect of salicylic acid on photosynthetic pigments, enzyme activity and yield of durum wheat (Triticum durum L.) under drought stress conditions. Plant Process and Function 2020; 9 (35) :243-258
URL: http://jispp.iut.ac.ir/article-1-1183-en.html
URL: http://jispp.iut.ac.ir/article-1-1183-en.html
1- Shiraz University
2- Shiraz University ,ebijanzadeh@gmail.com
2- Shiraz University ,
Abstract: (2570 Views)
In order to investigate the effect of salicylic acid on photosynthetic pigments, enzyme activity and yield of durum wheat cultivars under drought stress, a greenhouse experiment was conducted as factorial based on complete randomized design with 3 replicates. Treatments included of drought stress in two levels of normal irrigation and drought stress at the beginning of the milking stage, and salicylic acid at 0, 1, 2, and 3 mM and three different durum wheat cultivars consisted of Shabrang, Behrang and Yavaros. The results showed that the effect of late season drought stress, cultivar and salicylic acid on chlorophyll a and b contents, peroxidase and catalase enzymes, number of seeds per spike, biological yield and grain was significant (p≥0.05). Also, interaction of drought stress and salicylic acid had a significant effect on chlorophyll a and b contents, so that chlorophyll a and b contents in 3 mM salicylic acid in drought stress conditions were 32 and 35%, compared to no application of salicylic acid, respectively. Also, drought stress and salicylic acid had a significant effect on peroxidase and catalase enzymes and application of 3 mM salicylic acid caused 14 and 15% increase compared to no application of salicylic acid, respectively. Foliar application of 3 mM salicylic acid increased chlorophyll a and b contents and peroxidase and catalase enzymes activity compared to no application of salicylic acid and caused 13% in grain yield improvement of Yavaros cultivar.
Type of Study: Research |
Subject:
Droughts Stress
Received: 2019/01/5 | Accepted: 2019/06/23 | Published: 2020/05/9
Received: 2019/01/5 | Accepted: 2019/06/23 | Published: 2020/05/9
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