Abstract
L.) genotypes to different salinity levels. Responses were assessed at the germination to early seedling stage (Experiment 1). Seeds of different genotypes (n=292) were subjected to three salinity levels (0 [control], 60, and 120 mM NaCl). Principal Component Analysis (PCA) revealed that among studied traits seedling vigor index (SVI) contributed more towards the diverse response of genotypes to salinity stress. Based on SVI, eight contrasting genotypes assumed to be tolerant (Gage, Guymon, MTS0531, and Tascosa) and susceptible (CO04W320, Carson, TX04M410211) were selected for further physio-biochemical evaluation at the booting stage (Experiment 2) and to monitor grain yield. Higher level of salinity (120 mM NaCl) exposure at the booting stage increased thylakoid membrane damage, lipid peroxidation, sugars, proline, and protein while decreasing photosynthesis, chlorophyll index, starch, and grain yield. Based on grain yield, the assumed magnitude of the genotypic response shown in Experiment 1 was not analogous in Experiment 2. This indicates the necessity of individual screening of genotypes at different sensitive growth stages for identifying true salinity-tolerant and susceptible genotypes at a particular growth stage. However, based on higher grain yield and its least percentage reduction under higher salinity, Guymon and TX04M410211 were identified as tolerant, and Gage and CO04W320 as susceptible at the booting stage, and their biparental population can be used to identify genomic regions for booting stage-specific salinity response.
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Claims 10
Claim · model-written summary
Seedling vigor index contributed most to diverse salinity responses among genotypes.
- Taxon
- winter wheat
Triticum aestivumt0 - Outcome
- seedling vigor index (SVI)e0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedling vigor index (SVI) contributed more towards the diverse response of genotypes to salinity stress”
t0“winter wheat”
Claim · model-written summary
At booting, 120 mM NaCl increased thylakoid membrane damage and lipid peroxidation.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- booting stagee0
- Treatment
- 120 mM NaCle0
- Outcome
- thylakoid membrane damage, lipid peroxidatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher level of salinity (120 mM NaCl) exposure at the booting stage increased thylakoid membrane damage, lipid peroxidation, sugars, proline, and protein while decreasing photosynthesis, chlorophyll index, starch, and grain yield”
t0“winter wheat”
Claim · model-written summary
At booting, 120 mM NaCl increased sugars, proline, and protein.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- booting stagee0
- Treatment
- 120 mM NaCle0
- Outcome
- sugars, proline, and proteine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher level of salinity (120 mM NaCl) exposure at the booting stage increased thylakoid membrane damage, lipid peroxidation, sugars, proline, and protein while decreasing photosynthesis, chlorophyll index, starch, and grain yield”
t0“winter wheat”
Claim · model-written summary
At booting, 120 mM NaCl decreased photosynthesis, chlorophyll index, and starch.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- booting stagee0
- Treatment
- 120 mM NaCle0
- Outcome
- photosynthesis, chlorophyll index, starche0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher level of salinity (120 mM NaCl) exposure at the booting stage increased thylakoid membrane damage, lipid peroxidation, sugars, proline, and protein while decreasing photosynthesis, chlorophyll index, starch, and grain yield”
t0“winter wheat”
Claim · model-written summary
At booting, 120 mM NaCl decreased grain yield.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- booting stagee0
- Treatment
- 120 mM NaCle0
- Outcome
- grain yielde0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher level of salinity (120 mM NaCl) exposure at the booting stage increased thylakoid membrane damage, lipid peroxidation, sugars, proline, and protein while decreasing photosynthesis, chlorophyll index, starch, and grain yield”
t0“winter wheat”
Claim · model-written summary
Genotype response based on grain yield at booting did not match initial seedling screening.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- genotypic responsee0
- Qualifier
- not analogouse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Based on grain yield, the assumed magnitude of the genotypic response shown in Experiment 1 was not analogous in Experiment 2”
t0“winter wheat”
Claim · model-written summary
Guymon and TX04M410211 were identified as booting stage tolerant.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- Guymon and TX04M410211e0
- Organ / stage
- booting stagee0
- Outcome
- identified as tolerante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Guymon and TX04M410211 were identified as tolerant, and Gage and CO04W320 as susceptible at the booting stage”
t0“winter wheat”
Claim · model-written summary
Gage and CO04W320 were identified as booting stage susceptible.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- Gage and CO04W320e0
- Organ / stage
- booting stagee0
- Outcome
- susceptiblee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Guymon and TX04M410211 were identified as tolerant, and Gage and CO04W320 as susceptible at the booting stage”
t0“winter wheat”
Claim · model-written summary
Genotypes should be screened separately at sensitive growth stages.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- individual screening of genotypes at different sensitive growth stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“necessity of individual screening of genotypes at different sensitive growth stages”
t0“winter wheat”
Claim · model-written summary
The biparental population can be used to identify regions for booting stage salinity response.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- identify genomic regions for booting stage-specific salinity responsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“their biparental population can be used to identify genomic regions for booting stage-specific salinity response”
t0“winter wheat”
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