Abstract
Salinity is a major stress affecting production and productivity of wheat across the world. Understanding physiological traits associated with salt tolerance can help in breeding for improving wheat under salt stress. In the present investigation, physiological traits in 3rd leaf at seedling stage and grain yield at maturity were studied in a population of RILs derived from a cross between salt tolerant (Kharchia 65) and susceptible (HD 2009) cultivars under control (pH8.2) and sodic condition (pH 9.2) in microplots. Though HD 2009 had higher yield under control conditions, it exhibited a higher reduction in yield (44.7%) under sodic stress as compared to KH 65 (9.8%). There was a significantly lower accumulation of Na+ content and higher accumulation of K+, proline and chlorophyll content in the 3rd leaf of KH 65 as compared to HD 2009 under sodic stress. Na+ content exhibited significant negative correlation (P<0.01) while K+/Na+ ratio, proline content, and chlorophyll content showed significant positive correlation (P<0.01) with grain yield (GY) under sodic condition. First and second principal component analysis (PCA) explained the total variation of66.43% (PCI 50.18 % and PCII 16.25%) among different traits under sodic conditions. Na+ content made an independent group with strong negative correlation with grain yield and K+/Na+ ratio while proline content and thousand grain weight (TGW) were grouped together along with GY. The study demonstrated that low Na+ concentration and high K+/Na+ ratio, proline and chlorophyll content at the seedling stage are important physiological traits contributing towards yield under sodic stress. The information is useful in a breeding programme of wheat for salt tolerance. DOI:10.25174/2249-4065/2018/79735
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Claims 15
Claim · model-written summary
HD 2009 yielded more under control conditions
- Taxon
- wheat
Triticum aestivumt0 - Material
- HD 2009e0
- Outcome
- yielde0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HD 2009 had higher yield under control conditions”
t0“wheat variety KH 65”
Claim · model-written summary
HD 2009 yield fell by 44.7% under sodic stress, more than KH 65
- Taxon
- wheatTriticum aestivumt0
- Material
- HD 2009e0
- Treatment
- sodic stresse0
- Outcome
- yielde0
- Direction
- reductione0
- Value
- 44.7%e0
- Qualifier
- 9.8%e0
- Comparator
- KH 65e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Though HD 2009 had higher yield under control conditions, it exhibited a higher reduction in yield (44.7%) under sodic stress as compared to KH 65 (9.8%)”
t0“wheat variety KH 65”
Claim · model-written summary
KH 65 yield fell by 9.8% under sodic stress
- Taxon
- wheatTriticum aestivumt0
- Material
- KH 65e0
- Value
- 9.8%e0
Not reportedTreatmentComparatorOutcomeDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“KH 65 (9.8%)”
t0“wheat variety KH 65”
Claim · model-written summary
KH 65 had lower Na+ content than HD 2009 under sodic stress
- Taxon
- wheatTriticum aestivumt0
- Material
- KH 65e0
- Organ / stage
- 3rd leafe0
- Outcome
- Na+ contente0
- Direction
- lowere0
- Comparator
- HD 2009e0
- Setting
- under sodic stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significantly lower accumulation of Na+ content and higher accumulation of K+, proline and chlorophyll content in the 3rd leaf of KH 65 as compared to HD 2009 under sodic stress”
t0“wheat variety KH 65”
Claim · model-written summary
KH 65 had higher K+ than HD 2009 under sodic stress
- Taxon
- wheatTriticum aestivumt0
- Material
- KH 65e0
- Organ / stage
- 3rd leafe0
- Outcome
- K+e0
- Direction
- highere0
- Comparator
- HD 2009e0
- Setting
- under sodic stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significantly lower accumulation of Na+ content and higher accumulation of K+, proline and chlorophyll content in the 3rd leaf of KH 65 as compared to HD 2009 under sodic stress”
t0“wheat variety KH 65”
Claim · model-written summary
KH 65 had higher proline than HD 2009 under sodic stress
- Taxon
- wheatTriticum aestivumt0
- Material
- KH 65e0
- Organ / stage
- 3rd leafe0
- Outcome
- prolinee0
- Direction
- highere0
- Comparator
- HD 2009e0
- Setting
- under sodic stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significantly lower accumulation of Na+ content and higher accumulation of K+, proline and chlorophyll content in the 3rd leaf of KH 65 as compared to HD 2009 under sodic stress”
t0“wheat variety KH 65”
Claim · model-written summary
KH 65 had higher chlorophyll content than HD 2009 under sodic stress
- Taxon
- wheatTriticum aestivumt0
- Material
- KH 65e0
- Organ / stage
- 3rd leafe0
- Outcome
- chlorophyll contente0
- Direction
- highere0
- Comparator
- HD 2009e0
- Setting
- under sodic stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significantly lower accumulation of Na+ content and higher accumulation of K+, proline and chlorophyll content in the 3rd leaf of KH 65 as compared to HD 2009 under sodic stress”
t0“wheat variety KH 65”
Claim · model-written summary
Na+ content correlated negatively with grain yield under sodic conditions
- Taxon
- wheatTriticum aestivumt0
- Compound
- Na+ contente0
- Outcome
- grain yield (GY)e0
- Direction
- negativee0
- Value
- P<0.01e0
- Setting
- sodic conditione0
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na+ content exhibited significant negative correlation (P<0.01) while K+/Na+ ratio, proline content, and chlorophyll content showed significant positive correlation (P<0.01) with grain yield (GY) under sodic condition”
t0“wheat variety KH 65”
Claim · model-written summary
K+/Na+ ratio correlated positively with grain yield under sodic conditions
- Taxon
- wheatTriticum aestivumt0
- Compound
- K+/Na+ ratioe0
- Outcome
- grain yield (GY)e0
- Direction
- positivee0
- Value
- P<0.01e0
- Setting
- sodic conditione0
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na+ content exhibited significant negative correlation (P<0.01) while K+/Na+ ratio, proline content, and chlorophyll content showed significant positive correlation (P<0.01) with grain yield (GY) under sodic condition”
t0“wheat variety KH 65”
Claim · model-written summary
proline content correlated positively with grain yield under sodic conditions
- Taxon
- wheatTriticum aestivumt0
- Compound
- proline contente0
- Outcome
- grain yield (GY)e0
- Direction
- positivee0
- Value
- P<0.01e0
- Setting
- sodic conditione0
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na+ content exhibited significant negative correlation (P<0.01) while K+/Na+ ratio, proline content, and chlorophyll content showed significant positive correlation (P<0.01) with grain yield (GY) under sodic condition”
t0“wheat variety KH 65”
Claim · model-written summary
chlorophyll content correlated positively with grain yield under sodic conditions
- Taxon
- wheatTriticum aestivumt0
- Compound
- chlorophyll contente0
- Outcome
- grain yield (GY)e0
- Direction
- positivee0
- Value
- P<0.01e0
- Setting
- sodic conditione0
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na+ content exhibited significant negative correlation (P<0.01) while K+/Na+ ratio, proline content, and chlorophyll content showed significant positive correlation (P<0.01) with grain yield (GY) under sodic condition”
t0“wheat variety KH 65”
Claim · model-written summary
The first two principal components explained 66.43% of trait variation
- Taxon
- wheatTriticum aestivumt0
- Outcome
- total variatione0
- Value
- 66.43%e0
- Qualifier
- PCI 50.18 % and PCII 16.25%e0
- Setting
- under sodic conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“First and second principal component analysis (PCA) explained the total variation of66.43% (PCI 50.18 % and PCII 16.25%) among different traits under sodic conditions”
t0“wheat variety KH 65”
Claim · model-written summary
Na+ content formed an independent group and correlated negatively with grain yield and K+/Na+ ratio
- Taxon
- wheatTriticum aestivumt0
- Compound
- Na+ contente0
- Outcome
- grain yield and K+/Na+ ratioe0
- Direction
- negativee0
- Qualifier
- independent groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na+ content made an independent group with strong negative correlation with grain yield and K+/Na+ ratio”
t0“wheat variety KH 65”
Claim · model-written summary
Proline content and thousand grain weight grouped with grain yield
- Taxon
- wheatTriticum aestivumt0
- Compound
- proline contente0
- Outcome
- thousand grain weight (TGW)e0
- Qualifier
- grouped together along with GYe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline content and thousand grain weight (TGW) were grouped together along with GY”
t0“wheat variety KH 65”
Claim · model-written summary
Authors identify seedling Na+, K+/Na+, proline and chlorophyll traits as contributors to yield under sodic stress
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- seedling stagee0
- Compound
- Na+ concentratione0
- Outcome
- yielde0
- Setting
- under sodic stresse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low Na+ concentration and high K+/Na+ ratio, proline and chlorophyll content at the seedling stage are important physiological traits contributing towards yield under sodic stress”
t0“wheat variety KH 65”
The same questions in other papers
salinity · yield · Triticum aestivum (wheat)Positive and negative results
196 papers in the same direction as this paper · 30 in the opposite direction
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- negative
- negative
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