Abstract
Abstract The performance of selected salt-tolerant genotypes of barley [Hordeum vulgare (L.)], derived using field and greenhouse assessment methods, was evaluated under greenhouse and field conditions. Two barley genotypes, one salt-tolerant and one salt-sensitive, selected from each of the methods, were used. This study was conducted under both saline and non-saline field conditions, as well as under greenhouse conditions with salinized solution culture at 0 mM (control), 100, 200, 300, and 400 mM NaCl. Days to heading, days to maturity, plant height, number of grains per spike, grain weight per spike, 1000 grain weight, number of spikes per square meter, grain yield, harvest index and some physiological characters were measured. Plant dry weight and accumulated Na+, K+, and Ca2+ were measured 20 days after salinity treatments. The field salinity significantly reduced (P < 0.01) the means of all traits averaged on two tested genotypes. Under greenhouse conditions, the salt-tolerant genotype 'Afzal' produced the highest dry weight and K+/Na+ ratio under salt-stress conditions (200 mM). The influence of NaCl on parameters including protein and chlorophyll concentrations and membrane permeability was investigated in young and old leaves of cultivars, differing in salt resistance. NaCl-induced senescence also involved specific modifications, such as a transient increase in soluble protein concentration recorded in salt-resistant genotypes only. Alteration of membrane permeability appeared as one of the first symptoms of senescence in barley leaves and allowed discrimination among cultivars after only the seventh day of stress. Since a higher tolerance to salinity in Afzal was apparently associated with a lower concentration of Na+ and a higher K+/Na+ ratio of the shoots, this trait could probably be used for yield improvement of barley cultivars under saline conditions. It is can concluded from our findings that a relationship exists between genotype-specific salinity tolerance and the accumulation of proline in the leaves and roots along with higher uptake of sodium and chloride, lower decrease in the water and osmotic potential, less inhibition in the yield under salinity stress. KEYWORDS: barley Hordeum vulgare L.salt-tolerant genotypesmembrane permeability The authors are grateful and thank the Azad and Shahrekord University for the financial assistance, as well as the section of Agriculture and Natural Resources Research Center of Karaj collection for access to the barley genotypes. Thanks are also due to Dr. Amiri Fahliani for the helpful commentary on the manuscript.
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Claims 10
Claim · model-written summary
Field salinity significantly reduced the means of all traits averaged over two barley genotypes (P < 0.01).
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- field salinitye1
- Outcome
- means of all traitse1
- Direction
- reducede1
- Qualifier
- P < 0.01e1
- Comparator
- non-saline field conditionse2
- Setting
- fielde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Abstract The performance of selected salt-tolerant genotypes of barley [Hordeum vulgare (L.)]”
e1“The field salinity significantly reduced (P < 0.01) the means of all traits averaged on two tested genotypes”
e2“This study was conducted under both saline and non-saline field conditions”
Claim · model-written summary
Under greenhouse conditions, the salt-tolerant barley genotype Afzal had the highest dry weight and K+/Na+ ratio under salt stress (200 mM).
- Taxon
- barleyHordeum vulgaree0
- Material
- Afzale3
- Treatment
- salt-stress conditions (200 mM)e3
- Outcome
- dry weight and K+/Na+ ratioe3
- Direction
- higheste3
- Setting
- greenhouse conditionse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abstract The performance of selected salt-tolerant genotypes of barley [Hordeum vulgare (L.)]”
e3“Under greenhouse conditions, the salt-tolerant genotype 'Afzal' produced the highest dry weight and K+/Na+ ratio under salt-stress conditions (200 mM)”
Claim · model-written summary
NaCl-induced senescence involved a transient increase in soluble protein concentration recorded in salt-resistant barley genotypes only.
- Taxon
- barleyHordeum vulgaree0
- Material
- salt-resistant genotypese4
- Treatment
- NaCle4
- Outcome
- soluble protein concentratione4
- Direction
- increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abstract The performance of selected salt-tolerant genotypes of barley [Hordeum vulgare (L.)]”
e4“NaCl-induced senescence also involved specific modifications, such as a transient increase in soluble protein concentration recorded in salt-resistant genotypes only”
Claim · model-written summary
Alteration of membrane permeability appeared as one of the first symptoms of senescence in barley leaves and allowed discrimination among cultivars after only seven days of stress.
- Taxon
- barleyHordeum vulgaree0
- Organ / stage
- barley leavese5
- Outcome
- membrane permeabilitye5
- Qualifier
- after only the seventh day of stresse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abstract The performance of selected salt-tolerant genotypes of barley [Hordeum vulgare (L.)]”
e5“Alteration of membrane permeability appeared as one of the first symptoms of senescence in barley leaves and allowed discrimination among cultivars after only the seventh day of stress”
Claim · model-written summary
In Afzal, higher salinity tolerance was apparently associated with a lower concentration of Na+ in the shoots.
- Taxon
- barleyHordeum vulgaree0
- Material
- Afzale6
- Organ / stage
- shootse6
- Compound
- Na+e6
- Outcome
- concentration of Na+e6
- Direction
- lowere6
- Qualifier
- apparently associatede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abstract The performance of selected salt-tolerant genotypes of barley [Hordeum vulgare (L.)]”
e6“a higher tolerance to salinity in Afzal was apparently associated with a lower concentration of Na+ and a higher K+/Na+ ratio of the shoots”
Claim · model-written summary
In Afzal, higher salinity tolerance was apparently associated with a higher K+/Na+ ratio in the shoots.
- Taxon
- barleyHordeum vulgaree0
- Material
- Afzale6
- Organ / stage
- shootse6
- Outcome
- K+/Na+ ratioe6
- Direction
- highere6
- Qualifier
- apparently associatede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abstract The performance of selected salt-tolerant genotypes of barley [Hordeum vulgare (L.)]”
e6“a higher tolerance to salinity in Afzal was apparently associated with a lower concentration of Na+ and a higher K+/Na+ ratio of the shoots”
Claim · model-written summary
A relationship exists between genotype-specific salinity tolerance and the accumulation of proline in the leaves and roots.
- Taxon
- barleyHordeum vulgaree0
- Organ / stage
- leaves and rootse7
- Compound
- prolinee7
- Outcome
- accumulation of prolinee7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abstract The performance of selected salt-tolerant genotypes of barley [Hordeum vulgare (L.)]”
e7“It is can concluded from our findings that a relationship exists between genotype-specific salinity tolerance and the accumulation of proline in the leaves and roots along with higher uptake of sodium and chloride, lower decrease in the water and osmotic potential, less inhibition in the yield under salinity stress”
Claim · model-written summary
Genotype-specific salinity tolerance was associated with higher uptake of sodium and chloride under salinity stress.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- salinity stresse7
- Outcome
- uptake of sodium and chloridee7
- Direction
- highere7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abstract The performance of selected salt-tolerant genotypes of barley [Hordeum vulgare (L.)]”
e7“It is can concluded from our findings that a relationship exists between genotype-specific salinity tolerance and the accumulation of proline in the leaves and roots along with higher uptake of sodium and chloride, lower decrease in the water and osmotic potential, less inhibition in the yield under salinity stress”
Claim · model-written summary
Genotype-specific salinity tolerance was associated with a lower decrease in water and osmotic potential under salinity stress.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- salinity stresse7
- Outcome
- decrease in the water and osmotic potentiale7
- Direction
- lowere7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abstract The performance of selected salt-tolerant genotypes of barley [Hordeum vulgare (L.)]”
e7“It is can concluded from our findings that a relationship exists between genotype-specific salinity tolerance and the accumulation of proline in the leaves and roots along with higher uptake of sodium and chloride, lower decrease in the water and osmotic potential, less inhibition in the yield under salinity stress”
Claim · model-written summary
Genotype-specific salinity tolerance was associated with less inhibition of yield under salinity stress.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- salinity stresse7
- Outcome
- inhibition in the yielde7
- Direction
- lesse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abstract The performance of selected salt-tolerant genotypes of barley [Hordeum vulgare (L.)]”
e7“It is can concluded from our findings that a relationship exists between genotype-specific salinity tolerance and the accumulation of proline in the leaves and roots along with higher uptake of sodium and chloride, lower decrease in the water and osmotic potential, less inhibition in the yield under salinity stress”
The same questions in other papers
salinity · physiology: ion balance · Hordeum vulgare (barley)Positive and negative results
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