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Improved Salinity Tolerance-Associated Variables Observed in EMS Mutagenized Wheat Lines
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- Lethin, Johanna (author)
- University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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- Byrt, C. (author)
- Australian National University
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- Berger, B. (author)
- University of Adelaide
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- (creator_code:org_t)
- 2022-09-27
- 2022
- English.
- In: International Journal of Molecular Sciences. - : MDPI AG. - 1422-0067 .- 1661-6596. ; 23:19
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Salinity tolerance-associated phenotypes of 35 EMS mutagenized wheat lines originating from BARI Gom-25 were compared. Vegetative growth was measured using non-destructive image-based phenotyping. Five different NaCl concentrations (0 to 160 mM) were applied to plants 19 days after planting (DAP 19), and plants were imaged daily until DAP 38. Plant growth, water use, leaf Na+, K+ and Cl- content, and thousand kernel weight (TKW) were measured, and six lines were selected for further analysis. In saline conditions, leaf Na+, K-+,K- and Cl- content variation on a dry weight basis within these six lines were similar to 9.3, 1.4, and 2.4-fold, respectively. Relative to BARI Gom-25, two (OA6, OA62) lines had greater K+ accumulation, three (OA6, OA10, OA62) had 50-75% lower Na+:K+ ratios, and OA62 had similar to 30% greater water-use index (WUI). OA23 had similar to 2.2-fold greater leaf Na+ and maintained TKW relative to BARI Gom-25. Two lines (OA25, OA52) had greater TKW than BARI Gom-25 when grown in 120 mM NaCl but similar Na+:K+, WUI, and biomass accumulation. OA6 had relatively high TKW, high leaf K-+,K- and WUI, and low leaf Na+ and Cl-. Phenotypic variation revealed differing associations between the parameters measured in the lines. Future identification of the genetic basis of these differences, and crossing of lines with phenotypes of interest, is expected to enable the assessment of which combinations of parameters deliver the greatest improvement in salinity tolerance.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- LANTBRUKSVETENSKAPER -- Bioteknologi med applikationer på växter och djur (hsv//swe)
- AGRICULTURAL SCIENCES -- Agricultural Biotechnology (hsv//eng)
Keyword
- EMS
- mutagenized
- salinity
- salt stress
- Smarthouse
- sustainable
- agriculture
- wheat
- salt-tolerance
- plant
- na
- resistance
- mechanisms
- potassium
- responses
- growth
- sodium
- yield
- Biochemistry & Molecular Biology
- Chemistry
- sustainable agriculture
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Lethin, Johanna
- Byrt, C.
- Berger, B.
- Brien, C.
- Jewell, N.
- Roy, S.
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- Mousavi, Hesam
- Sukumaran, Selva ...
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- Aronsson, Henrik ...
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- University of Gothenburg
- Lund University
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