Abstract
Salt (NaCl)-induced regulation of some key physio-biochemical characteristics in two okra (Abelmoschus esculentus L.) cultivars (Nirali and Posa Sawni) was examined under greenhouse conditions. Plants of both cultivars were subjected for 30 days to sand culture salinized with four salt levels [0 (control), 50, 100 and 150 mm NaCl] in Hoagland’s nutrient solution. Salt stress significantly reduced the shoot and root fresh weights, transpiration rate, chlorophyll b content, net CO2 assimilation (A), transpiration rate (E), while enhanced leaf and root Na+ and Cl– concentrations in both cultivars. In contrast, chlorophyll a content, stomatal conductance (gs), leaf internal CO2 (Ci), Ci/Ca ratio, water-use efficiency (A/E) and fluorescence characteristics such as photochemical quenching (qP), non-photochemical quenching (NPQ), efficiency of PS-II (Fv/Fm), proline contents, and leaf and root K+, Ca2 + and N contents remained almost unaffected in both lines due to salt stress. The efficiency of PSII (Fv/Fm), A, chlorophyll b, root fresh weight and root N were higher in relatively salt tolerant cv. Nirali, whereas leaf Na+ and root Cl– were higher in cv. Posa Sawni. The relatively more reduction in growth in the cv. Posa Sawni was found to be associated with higher accumulation of Na+ in its leaves and Cl– in roots.
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Claims 11
Claim · model-written summary
Salt stress significantly reduced shoot and root fresh weights of okra.
- Taxon
- Abelmoschus esculentus
.jpg?width=60)
Abelmoschus esculentust0 - Treatment
- Salt stresse1
- Outcome
- shoot and root fresh weightse1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Okra (Abelmoschus esculentus L.)”
e1“Salt stress significantly reduced the shoot and root fresh weights, transpiration rate, chlorophyll b content, net CO2 assimilation (A)”
Claim · model-written summary
Salt stress significantly reduced transpiration rate, chlorophyll b content and net CO2 assimilation (A) of okra.
- Taxon
- Abelmoschus esculentusAbelmoschus esculentust0
- Treatment
- Salt stresse1
- Outcome
- transpiration rate, chlorophyll b content, net CO2 assimilation (A)e1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Okra (Abelmoschus esculentus L.)”
e1“Salt stress significantly reduced the shoot and root fresh weights, transpiration rate, chlorophyll b content, net CO2 assimilation (A)”
Claim · model-written summary
Salt stress increased leaf and root Na+ and Cl- concentrations of okra in both cultivars.
- Taxon
- Abelmoschus esculentusAbelmoschus esculentust0
- Treatment
- Salt stresse1
- Outcome
- leaf and root Na+e3
- Direction
- enhancede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Okra (Abelmoschus esculentus L.)”
e1“Salt stress significantly reduced the shoot and root fresh weights, transpiration rate, chlorophyll b content, net CO2 assimilation (A)”
e3“enhanced leaf and root Na+”
Claim · model-written summary
Salt stress left chlorophyll a content, stomatal conductance and leaf internal CO2 of okra almost unaffected.
- Taxon
- Abelmoschus esculentusAbelmoschus esculentust0
- Treatment
- salt stresse7
- Outcome
- chlorophyll a content, stomatal conductance (gs), leaf internal CO2 (Ci)e4
- Direction
- remained almost unaffectede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Okra (Abelmoschus esculentus L.)”
e4“chlorophyll a content, stomatal conductance (gs), leaf internal CO2 (Ci)”
e7“remained almost unaffected in both lines due to salt stress”
Claim · model-written summary
Salt stress left the Ci/Ca ratio and water-use efficiency (A/E) of okra almost unaffected.
- Taxon
- Abelmoschus esculentusAbelmoschus esculentust0
- Treatment
- salt stresse7
- Outcome
- Ci/Ca ratio, water-use efficiency (A/E)e5
- Direction
- remained almost unaffectede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Okra (Abelmoschus esculentus L.)”
e5“Ci/Ca ratio, water-use efficiency (A/E)”
e7“remained almost unaffected in both lines due to salt stress”
Claim · model-written summary
Salt stress left fluorescence characteristics of okra almost unaffected.
- Taxon
- Abelmoschus esculentusAbelmoschus esculentust0
- Treatment
- salt stresse7
- Outcome
- fluorescence characteristicse6
- Direction
- remained almost unaffectede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Okra (Abelmoschus esculentus L.)”
e6“fluorescence characteristics such as photochemical quenching (qP), non-photochemical quenching (NPQ), efficiency of PS-II (Fv/Fm)”
e7“remained almost unaffected in both lines due to salt stress”
Claim · model-written summary
Salt stress left proline contents of okra almost unaffected.
- Taxon
- Abelmoschus esculentusAbelmoschus esculentust0
- Treatment
- salt stresse7
- Outcome
- proline contentse7
- Direction
- remained almost unaffectede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Okra (Abelmoschus esculentus L.)”
e7“proline contents, and leaf and root K+, Ca2 + and N contents remained almost unaffected in both lines due to salt stress”
Claim · model-written summary
Salt stress left leaf and root K+, Ca2+ and N contents of okra almost unaffected.
- Taxon
- Abelmoschus esculentusAbelmoschus esculentust0
- Treatment
- salt stresse7
- Outcome
- K+, Ca2 + and N contentse7
- Direction
- remained almost unaffectede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Okra (Abelmoschus esculentus L.)”
e7“proline contents, and leaf and root K+, Ca2 + and N contents remained almost unaffected in both lines due to salt stress”
Claim · model-written summary
Cultivar Nirali had higher Fv/Fm, net CO2 assimilation (A) and chlorophyll b than cultivar Posa Sawni under salt stress.
- Taxon
- Abelmoschus esculentusAbelmoschus esculentust0
- Material
- cv. Niralie1
- Outcome
- efficiency of PSII (Fv/Fm), A, chlorophyll be1
- Direction
- highere1
- Qualifier
- relatively salt tolerante1
- Comparator
- cv. Posa Sawnie2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Okra (Abelmoschus esculentus L.)”
e1“The efficiency of PSII (Fv/Fm), A, chlorophyll b, root fresh weight and root N were higher in relatively salt tolerant cv. Nirali”
e2“were higher in cv. Posa Sawni”
Claim · model-written summary
Cultivar Nirali had higher root fresh weight and root N than cultivar Posa Sawni under salt stress.
- Taxon
- Abelmoschus esculentusAbelmoschus esculentust0
- Material
- cv. Niralie1
- Outcome
- root fresh weight and root Ne1
- Direction
- highere1
- Qualifier
- relatively salt tolerante1
- Comparator
- cv. Posa Sawnie2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Okra (Abelmoschus esculentus L.)”
e1“The efficiency of PSII (Fv/Fm), A, chlorophyll b, root fresh weight and root N were higher in relatively salt tolerant cv. Nirali”
e2“were higher in cv. Posa Sawni”
Claim · model-written summary
The greater growth reduction of cultivar Posa Sawni was associated with higher Na+ accumulation in its leaves.
- Taxon
- Abelmoschus esculentusAbelmoschus esculentust0
- Material
- cv. Posa Sawnie1
- Compound
- Na+e1
- Outcome
- growthe1
- Direction
- more reductione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Okra (Abelmoschus esculentus L.)”
e1“The relatively more reduction in growth in the cv. Posa Sawni was found to be associated with higher accumulation of Na+ in its leaves”
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