Abstract
Salinity causes cellular damage, limiting crop productivity. Accumulation of proline is one of the main adaptive mechanisms to salinity in plants. The main objective of this study was to mitigate the adverse effects of soil salinity in boro rice by exogenous application of proline. The field experiment was conducted at the farmer’s field of Botiaghata, Khulna with Boro rice. The soil was silty clay loam having pH 7.2, EC 6.6 dS/m, CEC 26 meq/100 g soil and organic matter content 0.84%. Two rice varieties (salt-sensitive; BRRI dhan29 and salt-tolerant; BINA dhan-8) were used as test crops. There were ten treatment combinations with different concentrations of proline applied at seedling and/or vegetative stages. Recommended doses of N, P, K, S and Zn fertilizers were applied to the all experimental plots. The experiments were laid out in a randomized complete block design with three replications. Soil salinity caused a significant reduction in growth and yield of both salt-sensitive and salt-tolerant rice. Salt-tolerant rice produced higher grain and straw yields than salt-sensitive rice. Application of proline significantly increased growth, and grain and straw yields of boro rice under saline condition. There were no considerable variations in growth and yield of rice due to the different doses of proline. Increased nutrient uptake and K+/Na+ ratio in boro rice were observed due to proline application. The present study suggests that exogenous proline improves salt tolerance in rice by increasing K+/Na+ ratio and nutrient uptake. Progressive Agriculture 29 (4): 295-303, 2018
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Claims 6
Claim · model-written summary
Soil salinity significantly reduced growth and yield of both salt-sensitive and salt-tolerant boro rice.
- Taxon
- rice
Oryza sativae1 - Material
- salt-sensitive and salt-tolerant ricee1
- Treatment
- Soil salinitye1
- Outcome
- growth and yielde1
- Direction
- reductione1
- Setting
- Botiaghata, Khulnae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted at the farmer’s field of Botiaghata, Khulna with Boro rice”
e1“Soil salinity caused a significant reduction in growth and yield of both salt-sensitive and salt-tolerant rice”
Claim · model-written summary
Salt-tolerant rice produced higher grain and straw yields than salt-sensitive rice.
- Taxon
- riceOryza sativae2
- Material
- Salt-tolerant ricee2
- Outcome
- grain and straw yieldse2
- Direction
- highere2
- Comparator
- salt-sensitive ricee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Salt-tolerant rice produced higher grain and straw yields than salt-sensitive rice”
Claim · model-written summary
Application of proline significantly increased growth, grain and straw yields of boro rice under saline condition.
- Taxon
- boro ricee3
- Treatment
- Application of prolinee3
- Outcome
- growth, and grain and straw yieldse3
- Direction
- increasede3
- Qualifier
- under saline conditione3
Not reportedComparator
Verbatim
e3“Application of proline significantly increased growth, and grain and straw yields of boro rice under saline condition”
Claim · model-written summary
Different doses of proline caused no considerable variation in growth and yield of rice.
- Taxon
- riceOryza sativae4
- Treatment
- different doses of prolinee4
- Outcome
- growth and yielde4
- Direction
- no considerable variationse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“There were no considerable variations in growth and yield of rice due to the different doses of proline”
Claim · model-written summary
Proline application increased nutrient uptake and the K+/Na+ ratio in boro rice.
- Taxon
- boro ricee5
- Treatment
- proline applicatione5
- Outcome
- nutrient uptake and K+/Na+ ratioe5
- Direction
- Increasede5
Not reportedComparator
Verbatim
e5“Increased nutrient uptake and K+/Na+ ratio in boro rice were observed due to proline application”
Claim · model-written summary
Exogenous proline may improve salt tolerance in rice by increasing the K+/Na+ ratio and nutrient uptake.
- Taxon
- riceOryza sativae6
- Treatment
- exogenous prolinee6
- Outcome
- salt tolerancee6
- Qualifier
- by increasing K+/Na+ ratio and nutrient uptakee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The present study suggests that exogenous proline improves salt tolerance in rice by increasing K+/Na+ ratio and nutrient uptake”
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