Volume 7, Issue 25 (vol. 7, no. 25 2018)                   j.plant proc. func. 2018, 7(25): 9-16 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Bijanzadeh E, Naderi R, Barati V. EFFECT OF SILICON PRIMING ON SEEDLING GROWTH, ROOT XYLEME ANATOMY AND ION ACCUMULATION OF BARLEY (Hordeum vulgare L.) TO ALLEVIATE DROUGHT STRESS. j.plant proc. func.. 2018; 7 (25) :9-16
URL: http://jispp.iut.ac.ir/article-1-930-en.html
1- Shiraz University , Ebijanzadeh@gmail.com
2- Shiraz University
Abstract:   (1721 Views)

The detrimental drought effects could be listed as the loss in dry weight and silicon is known to enhance crop tolerance to drought by increasing seedling growth and hydraulic conductivity. To investigate the effects of silicon priming (0, 1 and 2 mM as sodium silicate), on seedling growth and root anatomy of three barley cultivars (Khatam, Rihane, and Nimrooz) a laboratory experiment was conducted under drought stress induced by 3.6 mM polyethylene glycol (PEG). Under 3.6 mM PEG, the highest root length was observed in Nimrooz barley cultivar (7.86 mm) at 2 mM silicon. In Nimrooz, seedling dry weight increased from 0.19 mg plant-1 in control to 0.27 mg plant-1 at 2 mM silicon (29.6% increase). At 2 mM silicon, Nimrooz with highest root surface area had the highest hydraulic conductivity (6.29×10 -9 m s-1 MPa-1) while in Rihane and Khatam was low as 5.38 and 5.19×10-9 m s-1 MPa-1 under 3.6 mM PEG, respectively. In Nimrooz, positive relationship was observed between application of 2 mM silicon and increasing the mean diameter of peripheral metaxylem vessels under drought. In all barely cultivars, drought stress affected the diameter of the vessels more than the number of the vessels. Also, under 3.6 mM PEG, K+ and Ca2+content increased from 0 mM silicon to 2 mM. Overall, silicon priming at 2 mM, especially in Nimrooz appears to be a promising and cost-effective procedure to alleviate the drought stress.

Full-Text [PDF 353 kb]   (682 Downloads)    
Type of Study: Applicable | Subject: Drougth Stress
Received: 2017/10/24 | Accepted: 2017/12/12 | Published: 2020/04/29

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


© 2021 All Rights Reserved | Journal of Plant Process and Function

Designed & Developed by : Yektaweb