Abstract
Salt inundation leads to increased salinization of arable land in many arid and semi-arid regions. Until genetic solutions are found farmers and growers must either abandon salt-affected fields or use agronomic treatments that alleviate salt stress symptoms. Here, field experiments were carried out to study the effect of the osmoregulators proline at 200 mg L-1 and glycine betaine at 400 mg L-1 in counteracting the harmful effect of soil salinity stress on canola plants grown in Egypt. We assessed growth characteristics, yield and biochemical constituents. Results show first that all growth characters decreased with increasing salinity stress but applied osmoregulators alleviated these negative effects. Second, salinity stress decreased photosynthetic pigments, K and P contents, whilst increasing proline, soluble sugars, ascorbic acid, Na and Cl contents. Third, application of osmoregulators without salt stress increased photosynthetic pigments, proline, soluble sugars, N, K and P contents whilst decreasing Na and Cl contents. It is concluded that the exogenously applied osmoregulators glycine betaine and proline can fully or partially counteract the harmful effect of salinity stress on growth and yield of canola.© INRA and Springer-Verlag, France 2012.
DOI
10.1007/s13593-011-0076-3
Publication Date
2012-07-01
Publication Title
Agronomy for Sustainable Development
Volume
32
Issue
3
Publisher
Springer Science and Business Media LLC
ISSN
1773-0155
Embargo Period
2024-11-22
First Page
747
Last Page
754
Recommended Citation
Sakr, M., El-Sarkassy, N., & Fuller, M. (2012) 'Osmoregulators proline and glycine betaine counteract salinity stress in canola', Agronomy for Sustainable Development, 32(3), pp. 747-754. Springer Science and Business Media LLC: Available at: https://doi.org/10.1007/s13593-011-0076-3
