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Version 3.22
Publication Type J
Authors Sheikh-Mohamadi, MH; Etemadi, N; Nikbakht, A; Farajpour, M; Arab, M; Majidi, MM
Author Full Name Sheikh-Mohamadi, Mohamad-Hossein; Etemadi, Nematollah; Nikbakht, Ali; Farajpour, Mostafa; Arab, Mostafa; Majidi, Mohammad Mahdi
Title Screening and Selection of Twenty Iranian Wheatgrass Genotypes for Tolerance to Salinity Stress during Seed Germination and Seedling Growth Stage
Language English
Document Type Article
Author Keywords antioxidant defense system; crested wheatgrass; desert wheatgrass; germination; tall wheatgrass; salinity stress; turfgrass
Abstract Desert wheatgrass (Agropyron desertorum L.), tall wheatgrass (Agropyron elongatum L.), and crested wheatgrass (Agropyron cristatum L.) are native cool-season grass species that exhibit potential as a low-input turfgrass. An increased understanding of the biochemical and physiological responses of wheatgrass species and genotypes to salt stress conditions is important for developing genotypes with enhanced tolerance to salinity. The objective of this study was to characterize the physiological and antioxidative properties in 20 Iranian wheatgrass genotypes and to observe their responses to salinity stress during seed germination and seedling growth stage. A completely randomized factorial design was used with two types of factors, four levels of salinity (0, 50, 100, and 150 mM of NaCl), wheatgrass genotypes, and three replicates. In this experiment, the results demonstrated that salinity limits the germination of Iranian wheatgrass genotype seeds. The result of this study showed that among the wheatgrass genotypes, 'AD1', 'AD3,' 'AC6', and 'FA' took the shortest average time to germinate. Higher levels of final germination percentage (FGP) were observed in 'AD2', 'AD3', and 'AE5' under salinity stress than other genotypes throughout the experiment. During a prolonged period of study, 'AD1' had greater rate of germination (GR) than other genotypes. Out of the 21 genotypes, five genotypes ('AD1', 'AD2', 'AD3', 'AE5', and 'FA' genotypes) were in the range of ''salinity tolerant genotypes'' cluster. The 'AD1', 'AD2', 'AD3', 'AE5', and 'FA' genotypes generally performed better than other genotypes under salinity conditions, mainly through maintaining higher enzymatic activities such as superoxide dismutase (SOD) (EC, catalase (CAT) (EC, ascorbate peroxidase (APX) (EC and peroxidase (POD) (EC, and nonenzymatic antioxidant activities by glutathione (GSH). The 'AD1', 'AD2', 'AD3', 'AE5', and 'FA' genotypes also had higher proline levels and more of total nonstructural carbohydrates (TNC) content, lower malondialdehyde (MDA) content, and lower hydrogen peroxide content (H2O2).
Author Address [Sheikh-Mohamadi, Mohamad-Hossein; Etemadi, Nematollah; Nikbakht, Ali] Isfahan Univ Technol, Coll Agr, Dept Hort, Esfahan 8415683111, Iran; [Farajpour, Mostafa] Univ Tehran, Coll Abouraihan, Dept Agron & Plant Breeding, Tehran 3391653755, Iran; [Arab, Mostafa] Univ Tehran, Coll Abouraihan, Dept Hort Sci, Tehran 3391653755, Iran; [Majidi, Mohammad Mahdi] Isfahan Univ Technol, Coll Agr, Dept Agron & Plant Breeding, Esfahan 8415683111, Iran
Reprint Address Etemadi, N (corresponding author), Isfahan Univ Technol, Coll Agr, Dept Hort, Esfahan 8415683111, Iran.
E-mail Address etemadin@cc.iut.ac.ir
ResearcherID Number Farajpour, Mostafa/B-2395-2018; Majidi, Mohammad Mahdi/AAB-9491-2019
ORCID Number Farajpour, Mostafa/0000-0003-4223-502X; Majidi, Mohammad Mahdi/0000-0003-4746-9036
Funding Agency and Grant Number Department of Horticulture, College of Agriculture, Isfahan University of Technology
Funding Text Financial assistance for this work was provided by the Department of Horticulture, College of Agriculture, Isfahan University of Technology.
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Cited Reference Count 71
Times Cited 9
Total Times Cited Count (WoS, BCI, and CSCD) 12
Publisher City ALEXANDRIA
Publisher Address 113 S WEST ST, STE 200, ALEXANDRIA, VA 22314-2851 USA
ISSN 0018-5345
29-Character Source Abbreviation HORTSCIENCE
ISO Source Abbreviation Hortscience
Publication Date AUG
Year Published 2017
Volume 52
Issue 8
Beginning Page 1125
Ending Page 1134
Digital Object Identifier (DOI) 10.21273/HORTSCI12103-17
Page Count 10
Web of Science Category Horticulture
Subject Category Agriculture
Document Delivery Number FG0LZ
Unique Article Identifier WOS:000409437100016
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