Paper · 2025 · The Indian Journal of Agricultural Sciences

Physiological and molecular analysis of salt tolerance in wheat (Triticum aestivum) recombinant inbred lines population (HD2851 × Kharchia 65)

AHMED MOHAMMED ISMAIL; PRADEEP KUMAR SINGH; HARI KRISHNA; et al.

11
claims
33
verbatim quotes
0
citations
3
research areas
✓
Open access · cc-by-nc-sa

Abstract

Sodicity is a critical stress that significantly affects the yield and productivity of wheat. This stress can result in a range of physiological, biochemical, and molecular responses in plants, which can hinder their overall health and yield potential. Understanding these responses is key to developing salt-tolerant wheat (Triticum aestivum L.) varieties. The present study was carried out during 2022–23 and 2023–24 at ICAR-Central Soil Salinity Research Institute, Karnal, Haryana in which a population of 195 recombinant inbred lines (RILs) of wheat (HD2851 × KH65) was evaluated under control and sodicity conditions. Genotype HD2851 showed a more significant yield reduction (65.51%) under sodicity conditions compared to KH65 (45.08%). Following exposure to salt stress, the leaf tissues of KH65 exhibited 1.9-fold increase in Na+ content, while HD2851 showed 3.1-fold increase. Significant positive correlations (P˂0.01) were found between grain yield and several traits: chlorophyll content, K+/Na+ ratio, plant height, spike length, flag leaf area, and 1000-grain weight. Conversely, Na+ content exhibited a significant negative correlation (P˂0.01) with grain yield. The first two principal components accounted for 38.39% of the overall trait variation (PC1, 21.14%; PC2, 17.25%). In this study, the expression of TaNHX1, TaSOS1 and TaHKT2 genes was evaluated in the leaf tissues of salt-tolerant (KH65, RIL8 and RIL130) and salt-sensitive (HD2851, RIL61 and RIL154) wheat genotypes under salt treatment. The expression levels of TaNHX1, TaSOS1 and TaHKT2 genes were significantly higher in KH65, RIL8 and RIL130 genotypes following salt stress, suggesting enhanced capabilities for Na+ exclusion at the plasma membrane and Na+ sequestration in vacuoles. The information generated in the present study will be beneficial for improving salt tolerance in elite wheat genotypes.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 11

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

HD2851 had a 65.51% yield reduction under sodicity, versus 45.08% for KH65.

Material
HD2851e0
Treatment
sodicity conditionse0
Outcome
yield reductione0
Direction
reductione0
Value
65.51%e0
Qualifier
45.08%e0
Comparator
KH65e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Genotype HD2851 showed a more significant yield reduction (65.51%) under sodicity conditions compared to KH65 (45.08%).”

✓ located verbatim in the source · abstract, characters 624–743 · show in text ↑
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“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
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“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

KH65 leaf Na+ content increased 1.9-fold following salt stress.

Material
KH65e0
Organ / stage
leaf tissuese0
Treatment
salt stresse0
Outcome
Na+ contente0
Direction
increasee0
Value
1.9-folde0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Following exposure to salt stress, the leaf tissues of KH65 exhibited 1.9-fold increase in Na+ content, while HD2851 showed 3.1-fold increase.”

✓ located verbatim in the source · abstract, characters 744–886 · show in text ↑
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“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
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“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

HD2851 leaf Na+ content increased 3.1-fold following salt stress.

Material
HD2851e0
Organ / stage
leaf tissuese0
Treatment
salt stresse0
Outcome
Na+ contente0
Direction
increasee0
Value
3.1-folde0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Following exposure to salt stress, the leaf tissues of KH65 exhibited 1.9-fold increase in Na+ content, while HD2851 showed 3.1-fold increase.”

✓ located verbatim in the source · abstract, characters 744–886 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
t1

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Grain yield correlated positively with chlorophyll content, K+/Na+ ratio, and plant height.

Organ / stage
flag leaf areae0
Outcome
grain yielde0
Direction
positivee0
Qualifier
P˂0.01e0

Not reportedCompound

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Significant positive correlations (P˂0.01) were found between grain yield and several traits: chlorophyll content, K+/Na+ ratio, plant height, spike length, flag leaf area, and 1000-grain weight.”

✓ located verbatim in the source · abstract, characters 887–1082 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
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“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Grain yield correlated positively with spike length, flag leaf area, and 1000-grain weight.

Organ / stage
flag leaf areae0
Outcome
grain yielde0
Direction
positivee0
Qualifier
P˂0.01e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Significant positive correlations (P˂0.01) were found between grain yield and several traits: chlorophyll content, K+/Na+ ratio, plant height, spike length, flag leaf area, and 1000-grain weight.”

✓ located verbatim in the source · abstract, characters 887–1082 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
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“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
Associationobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Na+ content correlated negatively with grain yield.

Compound
Na+e0
Outcome
grain yielde0
Direction
negativee0
Qualifier
P˂0.01e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Conversely, Na+ content exhibited a significant negative correlation (P˂0.01) with grain yield.”

✓ located verbatim in the source · abstract, characters 1083–1178 · show in text ↑
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“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
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“wheat”

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Observationobservedoriginal resultmeasured

Claim · model-written summary

The first two principal components explained 38.39% of trait variation.

Outcome
overall trait variatione0
Value
38.39%e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The first two principal components accounted for 38.39% of the overall trait variation (PC1, 21.14%; PC2, 17.25%).”

✓ located verbatim in the source · abstract, characters 1179–1293 · show in text ↑
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“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
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“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

TaNHX1 expression was significantly higher in KH65, RIL8 and RIL130 after salt stress.

Material
KH65, RIL8 and RIL130e0
Treatment
salt stresse0
Gene
TaNHX1e0
Outcome
expression levelse0
Direction
highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The expression levels of TaNHX1, TaSOS1 and TaHKT2 genes were significantly higher in KH65, RIL8 and RIL130 genotypes following salt stress, suggesting enhanced capabilities for Na+ exclusion at the plasma membrane and Na+ sequestration in vacuoles.”

✓ located verbatim in the source · abstract, characters 1518–1767 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
t1

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

TaSOS1 expression was significantly higher in KH65, RIL8 and RIL130 after salt stress.

Material
KH65, RIL8 and RIL130e0
Treatment
salt stresse0
Gene
TaSOS1e0
Outcome
expression levelse0
Direction
highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The expression levels of TaNHX1, TaSOS1 and TaHKT2 genes were significantly higher in KH65, RIL8 and RIL130 genotypes following salt stress, suggesting enhanced capabilities for Na+ exclusion at the plasma membrane and Na+ sequestration in vacuoles.”

✓ located verbatim in the source · abstract, characters 1518–1767 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
t1

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

TaHKT2 expression was significantly higher in KH65, RIL8 and RIL130 after salt stress.

Material
KH65, RIL8 and RIL130e0
Treatment
salt stresse0
Gene
TaHKT2e0
Outcome
expression levelse0
Direction
highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The expression levels of TaNHX1, TaSOS1 and TaHKT2 genes were significantly higher in KH65, RIL8 and RIL130 genotypes following salt stress, suggesting enhanced capabilities for Na+ exclusion at the plasma membrane and Na+ sequestration in vacuoles.”

✓ located verbatim in the source · abstract, characters 1518–1767 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
t1

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
Mechanismobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher gene expression suggests enhanced Na+ exclusion and vacuolar sequestration in tolerant lines.

Outcome
Na+ exclusion at the plasma membrane and Na+ sequestration in vacuolese0
Qualifier
enhanced capabilitiese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“suggesting enhanced capabilities for Na+ exclusion at the plasma membrane and Na+ sequestration in vacuoles”

✓ located verbatim in the source · abstract, characters 1659–1766 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑
t1

“wheat”

✓ located verbatim in the source · title, characters 58–63 · show in text ↑

salinity · molecular: expression · Triticum aestivum (wheat)Results differ

39 papers: 22 positive, 17 negative or no effect

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salinity · physiology: ion balance · Triticum aestivum (wheat)Positive and negative results

64 papers: 7 positive, 57 negative or no effect

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salinity · yield · Triticum aestivum (wheat)Positive and negative results

227 papers: 30 positive, 197 negative or no effect

196 papers in the same direction as this paper · 30 in the opposite direction

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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.