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Authors Borrajo, CI; Sanchez-Moreiras, AM; Reigosa, MJ
Author Full Name Borrajo, Celina I.; Sanchez-Moreiras, Adela M.; Reigosa, Manuel J.
Title Morpho-physiological, biochemical and isotopic response of tall wheatgrass populations to salt stress
Source JOURNAL OF AGRONOMY AND CROP SCIENCE
Language English
Document Type Article
Author Keywords decaploid wheatgrass; morphogenesis; physiological parameters; production; salinity
Keywords Plus TOLERANCE; SALINITY; WATER; NA+; GRASSES; GROWTH
Abstract Tall wheatgrass [Elymus elongatus subsp. ponticus (Podp.) Melderis] is a C3 grass native from dry or saline habitats in SE Europe. The aim of this study was to better understand response mechanisms of populations from different origins to salinity and to provide new tools to select germoplasm with high salinity tolerance. Four populations (P3-P4-P5-P9) were irrigated with five solutions of increasing salinity (Salt: 0-0.1-0.2-0.3-0.4 M NaCl) and evaluated in pots in a greenhouse. Two experiments were carried out, a short 40-day long experiment with vegetative plants, and a longer 85-day long one with plants that underwent vegetative-reproductive stage. No evidence was found of an interaction between population and salt. Morpho-physiological, biochemicals, isotopic and productive variables were differently affected by increasing salinity and were also different among populations. Proline, Na+ and Cl- consistently appeared to function as osmotic agents. P5 showed the highest biomass in the 85-day experiment and had the highest leaf length, tiller density, water use efficiency and delta C-13 isotope; and the lowest Cl- concentration and evapotranspiration rate. However, P5 showed the lowest biomass in the 40-day experiment, suggesting that duration of the stress is an important aspect to consider when selecting germoplasm for tolerance to salinity. Differences among populations in growth strategies and physiological mechanisms could be related to their origin environment.
Author Address [Borrajo, Celina I.] Inst Nacl Tecnol Agropecuaria, Buenos Aires, DF, Argentina; [Borrajo, Celina I.; Sanchez-Moreiras, Adela M.; Reigosa, Manuel J.] Univ Vigo, Fac Biol, Vigo, Spain
Reprint Address Borrajo, CI (corresponding author), INTA Natl Inst Agr Technol, Agr Expt Stn Cuenca Salado, Ave Belgrano 416, RA-7203 Rauch, Argentina.
E-mail Address borrajo.celina@inta.gob.ar
ResearcherID Number Reigosa Roger, Manuel Joaquin/K-3551-2013
ORCID Number Reigosa Roger, Manuel Joaquin/0000-0003-0527-1849
Funding Agency and Grant Number Department of Plant and Soil Sciences, Faculty of Biology, University of Vigo
Funding Text Department of Plant and Soil Sciences, Faculty of Biology, University of Vigo
Publisher WILEY
Publisher City HOBOKEN
Publisher Address 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
ISSN 0931-2250
29-Character Source Abbreviation J AGRON CROP SCI
ISO Source Abbreviation J. Agron. Crop Sci.
Publication Date APR
Year Published 2021
Volume 207
Issue 2
Beginning Page 236
Ending Page 248
Digital Object Identifier (DOI) 10.1111/jac.12461
Page Count 13
Web of Science Category Agronomy
Subject Category Agriculture
Document Delivery Number QY6MW
Unique Article Identifier WOS:000595668000001
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