Home|Journals|Articles by Year|Audio Abstracts

Original Research

Egypt. J. Exp. Biol. (Bot.). 2013; 9(2): 199-211


Hanan A. Hashem Raifa A. Hassanein Mohamed A. Bekheta Fatma A. El-Kady.


The possible protective effect of selenium (Se) on canola plants (Brassica napus L.) subjected to salt stress was studied by investigating plant growth, yield and changes in photosynthetic pigments, carbohydrate, proline, certain mineral ions content, activities of some antioxidant enzymes of canola plants and fatty acid composition of the yielded seeds. For this purpose canola plants were irrigated with different levels of saline solution (0, 2000, 4000, and 6000 mg L-1, prepared according to Stroganov equation, 1962), then the effect of different dosage of Se (0, 2.5, 5, or 10 mg L-1 selenium as sodium selenate) were examined as foliar spray on 50 and 65 – days old plants. Then samples were collected for analysis as 72 – days old plants. Salinity led to significant inhibition in plant growth, yield components, photosynthetic pigment contents, quantity and quality of seed oil. The detected inhibition was directly related to the applied concentrations of salt. Se applied alone or in combination with salt treatment significantly increased plant growth, yield, photosynthetic pigment content and improved the quality of canola oil. The most effective concentration of Se was 5 mg L-1. In addition, Se-treated plants exhibited various defense mechanisms to cope with salt stress including increased endogenous proline content, enhanced catalase activity and increased magnesium and phosphorus ion contents.

Key words: Brassica napus, Fatty acids; Growth, Reactive oxygen species (ROS), Selenium, Yield

Full-text options

Share this Article

Online Article Submission
• ejmanager.com

ejPort - eJManager.com
Refer & Earn
About BiblioMed
License Information
Terms & Conditions
Privacy Policy
Contact Us

The articles in Bibliomed are open access articles licensed under Creative Commons Attribution 4.0 International License (CC BY), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.