Abstract
Cowpea is an important food crop in underdeveloped regions, mainly for arid and semi-arid regions, where water scarcity and salinity are limiting factors. The identification of salt-tolerant varieties can assist the crop expansion and yield increase. Thus, the objective of this study was to assess the germination and vigor of seeds from cowpea cultivars (Vigna unguiculata L. Walp.), under salt stress. For this, the experiment was carried out at the Seed Analysis Laboratory, Federal Rural University of the Semiarid (UFERSA), Mossoró, RN, Brazil,from October to November, 2014. Ten cowpea cultivars (BRS Guariba; BRS Potengi; BRS Itain; BRS 17 Gurguéia; BRS Aracê; Paulistinha; Pingo de Ouro; BRS Maratanã; Costela de Vaca and Canapu Branco) were studied using a 10x2 factorial design under two water salinity levels (0.0 = control and 8.0 dS m-1), in four replications with 50 seeds each. Germination and vigor were assessed through first count and standard test, root and hypocotyl length and total dry matter accumulation, in addition to salt tolerance index. Salt stress promoted growth reduction on cowpea cultivars and decreased the germination of the cultivars BRS Itain, Pingo de Ouro and Costela de Vaca. The BRS Aracê, Paulistinha and Canapu Branco cultivars are the most tolerant to salinity, while BRS Itain, BRS Gurguéia, Costela de Vaca and BRS Maratanã are the most sensitive to this stress during the germination phase.
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Claims 5
Claim · model-written summary
Salt stress reduced growth of cowpea cultivars compared with the control.
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- Salt stresse1
- Outcome
- growthe1
- Direction
- reductione1
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Salt stress promoted growth reduction on cowpea cultivars”
e2“(0.0 = control and 8.0 dS m-1)”
Claim · model-written summary
Salt stress decreased the germination of cowpea cultivars BRS Itain, Pingo de Ouro and Costela de Vaca compared with the control.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- BRS Itain, Pingo de Ouro and Costela de Vacae3
- Treatment
- Salt stresse1
- Outcome
- germinatione3
- Direction
- decreasede3
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Salt stress promoted growth reduction on cowpea cultivars”
e3“decreased the germination of the cultivars BRS Itain, Pingo de Ouro and Costela de Vaca”
e2“(0.0 = control and 8.0 dS m-1)”
Claim · model-written summary
BRS Aracê, Paulistinha and Canapu Branco are the most salinity-tolerant cowpea cultivars.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- BRS Aracê, Paulistinha and Canapu Brancoe4
- Outcome
- tolerant to salinitye4
- Direction
- most tolerante4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Salt stress promoted growth reduction on cowpea cultivars”
e4“The BRS Aracê, Paulistinha and Canapu Branco cultivars are the most tolerant to salinity”
Claim · model-written summary
BRS Itain, BRS Gurguéia and Costela de Vaca are the most salt-sensitive cowpea cultivars during germination.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- BRS Itain, BRS Gurguéia, Costela de Vacae5
- Organ / stage
- germination phasee5
- Outcome
- sensitive to this stresse5
- Direction
- most sensitivee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Salt stress promoted growth reduction on cowpea cultivars”
e5“BRS Itain, BRS Gurguéia, Costela de Vaca and BRS Maratanã are the most sensitive to this stress during the germination phase”
Claim · model-written summary
BRS Maratanã is among the most salt-sensitive cowpea cultivars during germination.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- BRS Maratanãe5
- Organ / stage
- germination phasee5
- Outcome
- sensitive to this stresse5
- Direction
- most sensitivee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Salt stress promoted growth reduction on cowpea cultivars”
e5“BRS Itain, BRS Gurguéia, Costela de Vaca and BRS Maratanã are the most sensitive to this stress during the germination phase”
The same questions in other papers
salinity · growth · Vigna unguiculata (cowpea)Results differ
56 papers in the same direction as this paper · 6 in the opposite direction
- negative
- no effect
- negative
59 papers more in this group
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.