Abstract
The present study evaluated the role of foliar applied proline to enhance salt tolerance of two rice cultivars with contrasting salt tolerance: Super basmati (salt susceptible) and Shaheen basmati (salt tolerant) in both nursery and field conditions. For pot experiment, salinity stress was imposed by applying 50 mM of NaCl solution to the soil daily for three continuing days, and applications of proline (0, 25, 50, 75 and 100 mM) was applied 25 DAS. For field experiment, the same cultivars were grown in a saline soil (EC = 5.05 d Sm-1) for two growth seasons with or without 50 mM proline applied at seedling stage (15 days after transplanting, DAT), vegetative state (50 DAT) or at both stages. Results from pot experiment revealed that foliar applied 50 mM proline significantly improved the seedling growth under saline stress by reducing electrolyte leakage and improving the water related (relative water contents and water potential), and biochemical attributes(SOD, CAT, MDA, EL and T CHL). Under field conditions, exogenous application of optimized dose of proline both at seedling establishment and vegetative stage significantly improved the performance of rice cultivars by improving tillering dynamics, plant water-relations, chlorophyll pigments, photosynthetic pigments, morphological and yield related traits of rice cultivars. Proline application improved the efficiency of salt tolerance of rice cultivars, Shaheen basmati showed better response in terms of yield than Super basmati. In crux, foliar applications of 50 mM proline at seedling and vegetative stages are more effective for achieving the best kernel yield under saline conditions.
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Claims 10
Claim · model-written summary
Under pot salinity, 50 mM foliar proline improved rice seedling growth.
- Taxon
- rice
Oryza sativat0 - Treatment
- foliar applied 50 mM prolinee0
- Outcome
- seedling growthe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar applied 50 mM proline significantly improved the seedling growth under saline stress”
t0“Rice”
Claim · model-written summary
Under pot salinity, 50 mM foliar proline reduced electrolyte leakage.
- Taxon
- riceOryza sativat0
- Treatment
- foliar applied 50 mM prolinee0
- Outcome
- electrolyte leakagee0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar applied 50 mM proline significantly improved the seedling growth under saline stress by reducing electrolyte leakage”
t0“Rice”
Claim · model-written summary
Under pot salinity, proline improved relative water content and water potential.
- Taxon
- riceOryza sativat0
- Treatment
- foliar applied 50 mM prolinee0
- Outcome
- relative water contents and water potentiale0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar applied 50 mM proline significantly improved the seedling growth under saline stress by reducing electrolyte leakage and improving the water related (relative water contents and water potential)”
t0“Rice”
Claim · model-written summary
Under pot salinity, proline improved the listed biochemical attributes.
- Taxon
- riceOryza sativat0
- Treatment
- foliar applied 50 mM prolinee0
- Outcome
- SOD, CAT, MDAe0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar applied 50 mM proline significantly improved the seedling growth under saline stress by reducing electrolyte leakage and improving the water related (relative water contents and water potential), and biochemical attributes(SOD, CAT, MDA, EL and T CHL)”
t0“Rice”
Claim · model-written summary
Under pot salinity, proline improved EL and T CHL.
- Taxon
- riceOryza sativat0
- Treatment
- foliar applied 50 mM prolinee0
- Outcome
- EL and T CHLe0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar applied 50 mM proline significantly improved the seedling growth under saline stress by reducing electrolyte leakage and improving the water related (relative water contents and water potential), and biochemical attributes(SOD, CAT, MDA, EL and T CHL)”
t0“Rice”
Claim · model-written summary
Field proline at both stages improved rice tillering dynamics and water relations.
- Taxon
- riceOryza sativat0
- Treatment
- proline both at seedling establishment and vegetative stagee0
- Outcome
- tillering dynamics, plant water-relationse0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous application of optimized dose of proline both at seedling establishment and vegetative stage significantly improved the performance of rice cultivars by improving tillering dynamics, plant water-relations”
t0“Rice”
Claim · model-written summary
Field proline at both stages improved chlorophyll and photosynthetic pigments.
- Taxon
- riceOryza sativat0
- Treatment
- proline both at seedling establishment and vegetative stagee0
- Outcome
- chlorophyll pigments, photosynthetic pigmentse0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous application of optimized dose of proline both at seedling establishment and vegetative stage significantly improved the performance of rice cultivars by improving tillering dynamics, plant water-relations, chlorophyll pigments, photosynthetic pigments”
t0“Rice”
Claim · model-written summary
Field proline at both stages improved rice morphology and yield traits.
- Taxon
- riceOryza sativat0
- Treatment
- proline both at seedling establishment and vegetative stagee0
- Outcome
- morphological and yield related traitse0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous application of optimized dose of proline both at seedling establishment and vegetative stage significantly improved the performance of rice cultivars by improving tillering dynamics, plant water-relations, chlorophyll pigments, photosynthetic pigments, morphological and yield related traits of rice cultivars”
t0“Rice”
Claim · model-written summary
Shaheen basmati had a better yield response to proline than Super basmati.
Verbatim
e0“Shaheen basmati showed better response in terms of yield than Super basmati”
Claim · model-written summary
The authors recommend 50 mM foliar proline at seedling and vegetative stages for kernel yield under saline conditions.
- Taxon
- riceOryza sativat0
- Treatment
- foliar applications of 50 mM proline at seedling and vegetative stagese0
- Outcome
- kernel yielde0
- Direction
- more effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar applications of 50 mM proline at seedling and vegetative stages are more effective for achieving the best kernel yield under saline conditions”
t0“Rice”
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