Abstract
Salinity may strongly influence the interaction between plant roots and surrounding soil, but this has been poorly studied for sodium sulfate (Na2SO4). The aim of this study was to investigate the effect of sodium chloride (NaCl) and Na2SO4 salinities on the soil chemical properties as well as rice physiological- and yield-related parameters of two contrasted cultivars (V14 (salt-sensitive) and Pokkali (salt-resistant)). Pot experiments were conducted using soil and electrolyte solutions, namely NaCl and Na2SO4, inducing two electrical conductivity levels (EC: 5 or 10 dS m−1) of the soil solutions. The control treatment was water with salt-free tap water. Our results showed that soil pH increased under Na2SO4 salinity, while soil EC increased as the level of saline stress increased. Salinity induced an increase in Na+ concentrations on solid soil complex and in soil solution. NaCl reduced the stomatal density in salt-sensitive cultivar. The total protein contents in rice grain were higher in V14 than in Pokkali cultivar. Saline stress significantly affected all yield-related parameters and NaCl was more toxic than Na2SO4 for most of the studied parameters. Pokkali exhibited a higher tolerance to saline stress than V14, whatever the considered type of salt. It is concluded that different types of salts differently influence soil properties and plant responses and that those differences partly depend on the salt-resistance level of the considered cultivar.
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Claims 9
Claim · model-written summary
Na2SO4 salinity increased soil pH.
- Taxon
- Rice
Oryza sativat0 - Treatment
- Na2SO4 salinitye0
- Outcome
- soil pHe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil pH increased under Na2SO4 salinity”
t0“Rice”
Claim · model-written summary
Soil EC increased with saline stress level.
- Taxon
- RiceOryza sativat0
- Treatment
- saline stresse0
- Outcome
- soil ECe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil EC increased as the level of saline stress increased”
t0“Rice”
Claim · model-written summary
Salinity increased Na+ in the solid soil complex.
- Taxon
- RiceOryza sativat0
- Treatment
- Salinitye0
- Outcome
- Na+ concentrations on solid soil complexe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity induced an increase in Na+ concentrations on solid soil complex and in soil solution.”
t0“Rice”
Claim · model-written summary
Salinity increased Na+ in soil solution.
- Taxon
- RiceOryza sativat0
- Treatment
- Salinitye0
- Outcome
- Na+ concentrations on solid soil complex and in soil solutione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity induced an increase in Na+ concentrations on solid soil complex and in soil solution.”
t0“Rice”
Claim · model-written summary
NaCl reduced stomatal density in the salt-sensitive cultivar.
- Taxon
- RiceOryza sativat0
- Material
- salt-sensitive cultivare0
- Treatment
- NaCle0
- Outcome
- stomatal densitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl reduced the stomatal density in salt-sensitive cultivar.”
t0“Rice”
Claim · model-written summary
V14 grain had more total protein than Pokkali grain.
- Taxon
- riceOryza sativae0
- Material
- V14e0
- Organ / stage
- graine0
- Outcome
- total protein contentse0
- Direction
- highere0
- Comparator
- Pokkalie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total protein contents in rice grain were higher in V14 than in Pokkali cultivar.”
Claim · model-written summary
Saline stress significantly affected all yield-related parameters.
- Taxon
- RiceOryza sativat0
- Treatment
- Saline stresse0
- Outcome
- yield-related parameterse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Saline stress significantly affected all yield-related parameters”
t0“Rice”
Claim · model-written summary
NaCl was more toxic than Na2SO4 for most studied parameters.
- Taxon
- RiceOryza sativat0
- Treatment
- NaCle0
- Outcome
- most of the studied parameterse0
- Direction
- more toxice0
- Comparator
- Na2SO4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl was more toxic than Na2SO4 for most of the studied parameters.”
t0“Rice”
Claim · model-written summary
Pokkali was more saline-stress tolerant than V14 across salt types.
- Taxon
- RiceOryza sativat0
- Material
- Pokkalie0
- Outcome
- tolerance to saline stresse0
- Direction
- highere0
- Qualifier
- whatever the considered type of salte0
- Comparator
- V14e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pokkali exhibited a higher tolerance to saline stress than V14, whatever the considered type of salt.”
t0“Rice”
The same questions in other papers
sodium chloride · physiology: gas exchange · Oryza sativa (rice)Results agree
4 papers in the same direction as this paper
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See all 5 papers →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.