Abstract
Cowpea (Vigna unguiculata (L.) Walp.) is one of the most important grain legumes in sub-Saharian regions. It contributes to man food security by providing a protein-rich diet. However, its production is limited by abiotic stresses such as salinity. This study aims to evaluate the salt tolerance of 15 cowpea cultivars, at germination stage. The seed germination process consisted of sowing them in agarified water (8 g·L(-1)) supplemented with 6 different concentrations of NaCl (0, 10, 50, 100, 150, and 200 mM). Results highlighted that high salt concentrations drastically reduced germination and significantly delayed the process for all varieties. A cowpea varietal effect towards the salt tolerance was noticed. Genotypes Diongoma, 58-78, and 58-191 were more salt-tolerant cultivars while Mougne and Yacine were more salt-sensitive ones as confirmed in the three groups of the dendrogram. NaCl effects on the early vegetative growth of seedlings were assessed with a tolerant (58-191) and a susceptible (Yacine) cultivar. Morphological (length and dry biomass) and physiological (chlorophyll and proline contents) parameter measurements revealed a negative effect of high (NaCl). However, 58-191 was much more salt tolerant, and the chlorophyll and proline contents were higher than those of Yacine genotype at increasing salt concentrations.
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Claims 9
Claim · model-written summary
High NaCl concentrations drastically reduced cowpea germination.
- Taxon
- Cowpea
Vigna unguiculatae0 - Treatment
- high salt concentrationse1
- Outcome
- germinatione1
- Direction
- drastically reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“high salt concentrations drastically reduced germination”
e0“Cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
High NaCl concentrations significantly delayed the cowpea germination process.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- high salt concentrationse2
- Outcome
- the processe2
- Direction
- significantly delayede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“high salt concentrations drastically reduced germination and significantly delayed the process for all varieties”
e0“Cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
Cowpea salt tolerance at germination differed among varieties.
- Taxon
- cowpeaVigna unguiculatae3
- Outcome
- salt tolerancee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“A cowpea varietal effect towards the salt tolerance was noticed”
e0“Cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
Cowpea genotypes Diongoma, 58-78 and 58-191 were more salt-tolerant cultivars.
- Taxon
- CowpeaVigna unguiculatae0
- Material
- Diongoma, 58-78, and 58-191e4
- Outcome
- salt-tolerant cultivarse4
- Direction
- more salt-tolerante4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Genotypes Diongoma, 58-78, and 58-191 were more salt-tolerant cultivars while Mougne and Yacine were more salt-sensitive ones”
e0“Cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
Cowpea genotypes Mougne and Yacine were more salt-sensitive.
- Taxon
- CowpeaVigna unguiculatae0
- Material
- Mougne and Yacinee4
- Outcome
- salt-sensitive onese4
- Direction
- more salt-sensitivee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Genotypes Diongoma, 58-78, and 58-191 were more salt-tolerant cultivars while Mougne and Yacine were more salt-sensitive ones”
e0“Cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
High NaCl had a negative effect on cowpea seedling length and dry biomass.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- high (NaCl)e5
- Outcome
- length and dry biomasse5
- Direction
- negative effecte5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Morphological (length and dry biomass) and physiological (chlorophyll and proline contents) parameter measurements revealed a negative effect of high (NaCl)”
e0“Cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
High NaCl had a negative effect on cowpea chlorophyll and proline contents.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- high (NaCl)e5
- Outcome
- chlorophyll and proline contentse5
- Direction
- negative effecte5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Morphological (length and dry biomass) and physiological (chlorophyll and proline contents) parameter measurements revealed a negative effect of high (NaCl)”
e0“Cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
Cowpea genotype 58-191 was much more salt tolerant than Yacine.
- Taxon
- CowpeaVigna unguiculatae0
- Material
- 58-191e7
- Outcome
- salt tolerante7
- Direction
- much more salt tolerante7
- Comparator
- Yacine genotypee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“However, 58-191 was much more salt tolerant, and the chlorophyll and proline contents were higher than those of Yacine genotype at increasing salt concentrations”
e0“Cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
Cowpea genotype 58-191 had higher chlorophyll and proline contents than Yacine at increasing salt concentrations.
- Taxon
- CowpeaVigna unguiculatae0
- Material
- 58-191e7
- Treatment
- increasing salt concentrationse7
- Outcome
- chlorophyll and proline contentse7
- Direction
- highere7
- Comparator
- Yacine genotypee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“However, 58-191 was much more salt tolerant, and the chlorophyll and proline contents were higher than those of Yacine genotype at increasing salt concentrations”
e0“Cowpea (Vigna unguiculata (L.) Walp.)”
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See all 63 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.