Seed Priming with Salicylic Acid Improves Germination and Growth of Lathyrus sativus L. under Salinity Stress
Abstract
Increasing the ability of crops to maintain growth and productivity under saline conditions is of paramount importance. The effect of salicylic acid (SA) priming on germination and physiological traits of Lathyrus sativus under salinity stress was studied in a factorial experiment based on a completely randomized design. The experimental treatments composed of SA at three levels (0, 0.1, and 0.2 mM) and NaCl salinity at three levels (0, 50, and 100 mM). The effect of salinity level and SA priming was significant on all recorded factors, except from final germination percentage. As salinity level increased, all germination and physiological traits declined compared with control, whereas the mean germination time and percentage of cell death were increased. Moreover, as salinity was intensified, the Hill reaction was decreased significantly. Salinity exhibited the strongest effects at NaCl rate of 100 mM. Seed priming with SA increased germination speed index, reduced mean germination time, and increased leaf relative water content, seedling fresh and dry weight compared with plants from non-primed seeds. Seedling vigor index was increased by 23.4% in primed seeds with 0.2 mM SA. SA priming especially at 0.2 mM rate increased the Hill reaction rate and reduced percentage of cell death. SA priming could be regarded as a practical approach to improve germination traits, seedling growth, and physiological traits of Lathyrus sativus L. under salinity stress conditions.
Keywords
References
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Details
Primary Language
English
Subjects
Agricultural, Veterinary and Food Sciences
Journal Section
Research Article
Authors
Latifeh Pourakbar
This is me
0000-0002-2623-7394
Iran
Faegheh Jangjoo
This is me
0000-0002-7308-1425
Iran
Publication Date
March 31, 2020
Submission Date
September 25, 2019
Acceptance Date
January 5, 2020
Published in Issue
Year 2020 Volume: 30 Number: 1
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