Abstract
INTRODUCTION Salinity is one of the important abiotic stresses limiting rice productivity. The capacity to tolerate salinity is a key factor in plant productivity. Rice is a species native to swamps and freshwater marshes and its cultivated varieties provide one of the world’s most important food crops. In south and south-east Asia, about 100 ABSTRACT Salt composition can affect rice (Oryza sativa L.) growth at germination and early seedling stages. The response of eleven rice genotypes to sodium salt compositions (NaCl and Na 2 SO 4 with the ratio of 1:1, 2:1 and 1:2 molar concentrations) and concentrations (2.5, 5.0, 7.5 and 10 dS m salt concentrations) was investigated in the laboratory for 10 days. Effects due to salinity, genotype, and their interaction were observed for most of the measured parameters during the germination and early seedling stages. Mean germination time increased and germination index decreased with increasing salt stress. Measured agronomic characteristics were influenced by salinity stress with the extent differing with salt treatments. The 2:1 molar ratio compared to the other salt compositions showed the greatest effect on rice germination. The results also confirmed that Cl toxicity effects decreased as SO 4 2increased in the solution. There was a non-significant relationship between water content and proline accumulation. The anion associated with Na may play a functional role in the responses of rice seedlings and the degree of proline synthesis in stressed plants. According to mean germination time and germination index, Tarom-e-Hashemi and Shirodi can be classified into salt sensitive and salt tolerant groups, respectively.
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Claims 10
Claim · model-written summary
Salinity, genotype and their interaction affected most of the measured parameters of rice genotypes during germination and early seedling stages.
- Taxon
- rice genotypes
Oryza sativat0 - Treatment
- salinitye0
- Outcome
- most of the measured parameterse0
- Setting
- germination and early seedling stagese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e0“Effects due to salinity, genotype, and their interaction were observed for most of the measured parameters during the germination and early seedling stages”
Claim · model-written summary
Mean germination time of rice genotypes increased with increasing salt stress.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- increasing salt stresse0
- Outcome
- Mean germination timee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e0“Mean germination time increased and germination index decreased with increasing salt stress”
Claim · model-written summary
Germination index of rice genotypes decreased with increasing salt stress.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- increasing salt stresse0
- Outcome
- germination indexe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e0“Mean germination time increased and germination index decreased with increasing salt stress”
Claim · model-written summary
Measured agronomic characteristics of the rice genotypes were influenced by salinity stress, to a degree that differed among salt treatments.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- salinity stresse0
- Outcome
- agronomic characteristicse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e0“Measured agronomic characteristics were influenced by salinity stress with the extent differing with salt treatments”
Claim · model-written summary
The 2:1 molar salt ratio had the greatest effect on rice germination compared with the other salt compositions.
- Taxon
- riceOryza sativae0
- Treatment
- 2:1 molar ratioe0
- Outcome
- rice germinatione0
- Direction
- greatest effecte0
- Comparator
- the other salt compositionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 2:1 molar ratio compared to the other salt compositions showed the greatest effect on rice germination”
Claim · model-written summary
Chloride toxicity effects on rice decreased as sulfate increased in the solution.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- SO 4 2increased in the solutione0
- Outcome
- Cl toxicity effectse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e0“The results also confirmed that Cl toxicity effects decreased as SO 4 2increased in the solution”
Claim · model-written summary
No significant relationship was found between water content and proline accumulation in the rice genotypes.
- Taxon
- rice genotypesOryza sativat0
- Outcome
- relationship between water content and proline accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e0“There was a non-significant relationship between water content and proline accumulation”
Claim · model-written summary
The anion associated with sodium may play a functional role in rice seedling responses and in the degree of proline synthesis under stress.
- Taxon
- rice seedlingsOryza sativae0
- Compound
- anion associated with Nae0
- Outcome
- degree of proline synthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The anion associated with Na may play a functional role in the responses of rice seedlings and the degree of proline synthesis in stressed plants”
Claim · model-written summary
Based on mean germination time and germination index, Tarom-e-Hashemi can be classified as salt sensitive.
- Taxon
- rice genotypesOryza sativat0
- Material
- Tarom-e-Hashemie0
- Outcome
- salt sensitivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e0“According to mean germination time and germination index, Tarom-e-Hashemi and Shirodi can be classified into salt sensitive and salt tolerant groups, respectively”
Claim · model-written summary
Based on mean germination time and germination index, Shirodi can be classified as salt tolerant.
- Taxon
- rice genotypesOryza sativat0
- Material
- Shirodie0
- Outcome
- salt tolerante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e0“According to mean germination time and germination index, Tarom-e-Hashemi and Shirodi can be classified into salt sensitive and salt tolerant groups, respectively”
The same questions in other papers
salinity · growth · Oryza sativa (rice)Positive and negative results
258 papers in the same direction as this paper · 37 in the opposite direction
- positive
- negative
- negative
292 papers more in this group
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