Abstract
Salinity is a serious problem affecting one third of the irrigation land and limiting the yield potential of modern rice (Oryza sativa L.) varieties. To increase our understanding of salt tolerance mechanisms in rice for better production, knowledge of salinity effects on rice seedling growth and yield components is inevitable. Despite of large number of studies on salinity tolerance of rice, we have very limited knowledge on the overall effect of salinity on rice seedlings growth. The experiment was carried out to assess the responses of salinity on the growth, nutrient accumulation and yield of rice genotypes BRRI dhan29 (salt-sensitive) and BINA dhan-10 (salt-tolerant). The pot experiment was conveyed at the net house to evaluate the response of two rice genotypes at five levels of salt stresses (0, 25, 50, 75, 100 mM NaCl) at the vegetative stage. After harvesting of rice, electrical conductivity of soil was analyzed. Growth, yield components, grain and straw yields were evaluated. Binadhan-10 showed a higher salt tolerance in physiological parameters of rice than BRRI dhan29. A significant reduction of growth, yield components, grain and straw yields of both rice genotypes was found in response to salt stress. At different salt stress conditions nutrient uptake (NPS) and K+/Na+ ratio was significantly decreased in both rice genotypes. Yet, K+/Na+ ratio was more in salt-tolerant variety than salt-sensitive variety. Asian J. Med. Biol. Res. 2022, 8 (4), 230-239
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Claims 6
Claim · model-written summary
BINA dhan-10 had higher physiological salt tolerance than BRRI dhan29.
- Taxon
- rice
Oryza sativae0 - Material
- Binadhan-10e0
- Outcome
- salt tolerance in physiological parameterse0
- Direction
- highere0
- Comparator
- BRRI dhan29e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Binadhan-10 showed a higher salt tolerance in physiological parameters of rice than BRRI dhan29.”
Claim · model-written summary
Salt stress significantly reduced growth of both rice genotypes.
- Taxon
- riceOryza sativae0
- Treatment
- salt stresse0
- Outcome
- growthe0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant reduction of growth, yield components, grain and straw yields of both rice genotypes was found in response to salt stress.”
Claim · model-written summary
Salt stress significantly reduced yield components and grain and straw yields.
- Taxon
- riceOryza sativae0
- Treatment
- salt stresse0
- Outcome
- yield components, grain and straw yieldse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant reduction of growth, yield components, grain and straw yields of both rice genotypes was found in response to salt stress.”
Claim · model-written summary
Salt stress significantly decreased nutrient uptake in both rice genotypes.
- Taxon
- riceOryza sativae0
- Treatment
- salt stress conditionse0
- Outcome
- nutrient uptake (NPS)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At different salt stress conditions nutrient uptake (NPS) and K+/Na+ ratio was significantly decreased in both rice genotypes.”
Claim · model-written summary
Salt stress significantly decreased K+/Na+ ratio in both rice genotypes.
- Taxon
- riceOryza sativae0
- Treatment
- salt stress conditionse0
- Outcome
- K+/Na+ ratioe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At different salt stress conditions nutrient uptake (NPS) and K+/Na+ ratio was significantly decreased in both rice genotypes.”
Claim · model-written summary
The salt tolerant variety had a higher K+/Na+ ratio.
- Taxon
- riceOryza sativat0
- Outcome
- K+/Na+ ratioe0
- Direction
- moree0
- Comparator
- salt-sensitive varietye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yet, K+/Na+ ratio was more in salt-tolerant variety than salt-sensitive variety.”
t0“rice”
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