Abstract
Soil salinity is a major constraint to food production because it limits crop yield. In this study, effect of applied NaCl on growth, proline, sugar content, leaf water potential, photosynthetic pigment concentrations and components of yield of five cowpea plant (Vigna unguiculata L. Walp) P1, P7, P13, P17 and P23was investigated. The experiment was carried out in pots under glasshouse at École Nationale Supérieure Agronomique, Algeria during 2023. The soil used was irrigated with NaCl and the rates of 1.93, 3.8, 4.7 and 6.0. dS m-1 NaCl. Salt stress was started 20 days after the start of the experiment and during 2 months. Growth (height, number of leaves and leaf area) and yield (number of pods / plant, length of pods / plant, weight of 100 seeds and number of seeds / pods) of the cowpea plants was inhibited by salinity. Application of NaCl significantly decreased leaf water potential, photosynthetic pigment (such as chlorophyll a, chlorophyll b, total chlorophyll and carotenoid). However, it could stimulate traits that could lead to the survival of cowpea plant in saline environment due to proline and sugar accumulations that increased as a result of salt stress. However, the effects vary depending on the level of salt and the population concerned. P1, P7 and P17 were less affected by salt than the sensitive cultivars P13 and P17.Our results suggests that the NaCl tolerance of this cultivars is supported by better yield, the less pigment and leaf water potential and a higher osmotic adjustment.
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Claims 9
Claim · model-written summary
Salinity inhibited cowpea height, leaf number and leaf area.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- salinitye0
- Outcome
- height, number of leaves and leaf areae0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth (height, number of leaves and leaf area) and yield (number of pods / plant, length of pods / plant, weight of 100 seeds and number of seeds / pods) of the cowpea plants was inhibited by salinity”
Claim · model-written summary
Salinity inhibited cowpea pod number, pod length and 100-seed weight.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- salinitye0
- Outcome
- number of pods / plant, length of pods / plant, weight of 100 seedse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield (number of pods / plant, length of pods / plant, weight of 100 seeds and number of seeds / pods) of the cowpea plants was inhibited by salinity”
Claim · model-written summary
Salinity inhibited cowpea seed number per pod.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- salinitye0
- Outcome
- number of seeds / podse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of seeds / pods) of the cowpea plants was inhibited by salinity”
Claim · model-written summary
NaCl significantly decreased cowpea leaf water potential.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- NaCle0
- Outcome
- leaf water potentiale0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of NaCl significantly decreased leaf water potential, photosynthetic pigment (such as chlorophyll a, chlorophyll b, total chlorophyll and carotenoid)”
t0“COWPEA”
Claim · model-written summary
NaCl significantly decreased cowpea chlorophyll a, chlorophyll b and total chlorophyll.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- NaCle0
- Outcome
- chlorophyll a, chlorophyll b, total chlorophylle0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of NaCl significantly decreased leaf water potential, photosynthetic pigment (such as chlorophyll a, chlorophyll b, total chlorophyll and carotenoid)”
t0“COWPEA”
Claim · model-written summary
NaCl significantly decreased cowpea carotenoids.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- NaCle0
- Outcome
- carotenoide0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of NaCl significantly decreased leaf water potential, photosynthetic pigment (such as chlorophyll a, chlorophyll b, total chlorophyll and carotenoid)”
t0“COWPEA”
Claim · model-written summary
Salt stress increased cowpea proline and sugar accumulation.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- salt stresse0
- Outcome
- proline and sugar accumulationse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline and sugar accumulations that increased as a result of salt stress”
e1“cowpea plant in saline environment”
Claim · model-written summary
Salinity effects varied with salt level and cowpea population.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- level of salte0
- Outcome
- effectse0
- Direction
- varye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects vary depending on the level of salt and the population concerned”
e1“cowpea plant in saline environment”
Claim · model-written summary
Cowpea populations P1 and P7 were less affected by salt than P13.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- P1, P7e0
- Outcome
- affected by salte0
- Direction
- less affectede0
- Comparator
- P13e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P1, P7 and P17 were less affected by salt than the sensitive cultivars P13 and P17”
e1“cowpea plant in saline environment”
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See all 8 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.