Abstract
Soil salinity is one of the abiotic factors affecting crop production worldwide. Introducing salt tolerant genotypes is considered as an economical strategy for increasing the production of agricultural crops in salt affected soils. In this study, morphological and biochemical changes of twenty three cowpea genotypes from India were evaluated for salt tolerance using seven days old seedlings treated with 0 and 75mM sodium chloride solutions. Chlorophyll, sugar, proline, soluble protein, sodium (Na+), potassium (K+), K+/Na+ ratio, shoot length, root length and fresh weight were determined and all observations were converted to salt tolerance indices (STI). Chlorophyll content, K+/Na+ ratio, and growth parameters decreased on exposure to salt stress; whereas sugar, proline and soluble protein contents increased. To improve the selection efficiency of salt tolerant genotypes, STI values of all parameters were subjected to hierarchical clustering and the 23 genotypes were grouped into three clusters. Nine salt tolerant genotypes (KBC2, IVT-VCP-09-013, VBN1, VBN2, CO(CP)7, VCP-09-001, DC15, PGCP5 and VCP-09-030) were identified by hierarchical clustering. Correlation studies showed that soluble protein content and K+/Na+ ratio positively correlated with all the growth parameters indicating their major contribution towards salt tolerance.
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Claims 10
Claim · model-written summary
Salt stress decreased chlorophyll content in cowpea.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- salt stresse0
- Outcome
- Chlorophyll contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll content, K+/Na+ ratio, and growth parameters decreased on exposure to salt stress”
t0“Selection of Salt Tolerant Cowpea Genotypes Based on Salt Tolerant Indices of Morpho-biochemical Traits”
Claim · model-written summary
Salt stress decreased the K+/Na+ ratio in cowpea.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- salt stresse0
- Outcome
- K+/Na+ ratioe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll content, K+/Na+ ratio, and growth parameters decreased on exposure to salt stress”
t0“Selection of Salt Tolerant Cowpea Genotypes Based on Salt Tolerant Indices of Morpho-biochemical Traits”
Claim · model-written summary
Salt stress decreased cowpea growth parameters.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- salt stresse0
- Outcome
- growth parameterse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll content, K+/Na+ ratio, and growth parameters decreased on exposure to salt stress”
t0“Selection of Salt Tolerant Cowpea Genotypes Based on Salt Tolerant Indices of Morpho-biochemical Traits”
Claim · model-written summary
Salt stress increased sugar content in cowpea.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- salt stresse1
- Outcome
- sugare0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas sugar, proline and soluble protein contents increased”
t0“Selection of Salt Tolerant Cowpea Genotypes Based on Salt Tolerant Indices of Morpho-biochemical Traits”
e1“Chlorophyll content, K+/Na+ ratio, and growth parameters decreased on exposure to salt stress”
Claim · model-written summary
Salt stress increased proline content in cowpea.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- salt stresse1
- Outcome
- prolinee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas sugar, proline and soluble protein contents increased”
t0“Selection of Salt Tolerant Cowpea Genotypes Based on Salt Tolerant Indices of Morpho-biochemical Traits”
e1“Chlorophyll content, K+/Na+ ratio, and growth parameters decreased on exposure to salt stress”
Claim · model-written summary
Salt stress increased soluble protein content in cowpea.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- salt stresse1
- Outcome
- soluble protein contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas sugar, proline and soluble protein contents increased”
t0“Selection of Salt Tolerant Cowpea Genotypes Based on Salt Tolerant Indices of Morpho-biochemical Traits”
e1“Chlorophyll content, K+/Na+ ratio, and growth parameters decreased on exposure to salt stress”
Claim · model-written summary
Trait indices grouped 23 cowpea genotypes into three clusters.
- Taxon
- cowpeaVigna unguiculatat0
- Outcome
- three clusterse0
- Value
- three clusterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“STI values of all parameters were subjected to hierarchical clustering and the 23 genotypes were grouped into three clusters”
t0“Selection of Salt Tolerant Cowpea Genotypes Based on Salt Tolerant Indices of Morpho-biochemical Traits”
Claim · model-written summary
Clustering identified nine salt tolerant cowpea genotypes.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- KBC2, IVT-VCP-09-013, VBN1, VBN2, CO(CP)7, VCP-09-001, DC15, PGCP5 and VCP-09-030e0
- Outcome
- salt tolerant genotypese0
- Value
- Ninee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nine salt tolerant genotypes (KBC2, IVT-VCP-09-013, VBN1, VBN2, CO(CP)7, VCP-09-001, DC15, PGCP5 and VCP-09-030) were identified by hierarchical clustering”
t0“Selection of Salt Tolerant Cowpea Genotypes Based on Salt Tolerant Indices of Morpho-biochemical Traits”
Claim · model-written summary
Soluble protein content positively correlated with all cowpea growth parameters.
- Taxon
- cowpeaVigna unguiculatat0
- Compound
- soluble protein contente0
- Outcome
- growth parameterse0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soluble protein content and K+/Na+ ratio positively correlated with all the growth parameters”
t0“Selection of Salt Tolerant Cowpea Genotypes Based on Salt Tolerant Indices of Morpho-biochemical Traits”
Claim · model-written summary
K+/Na+ ratio positively correlated with all cowpea growth parameters.
- Taxon
- cowpeaVigna unguiculatat0
- Compound
- K+/Na+ ratioe0
- Outcome
- growth parameterse0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soluble protein content and K+/Na+ ratio positively correlated with all the growth parameters”
t0“Selection of Salt Tolerant Cowpea Genotypes Based on Salt Tolerant Indices of Morpho-biochemical Traits”
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See all 10 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.