Abstract
Cowpea is an important source of protein, being the main subsistence crop in the northeast region of Brazil, where water restriction and salinity are limiting factors. Identification of saline stress tolerant varieties can aid crop expansion and improve crop yields. The objective was to study the tolerance of traditional varieties of cowpea to the salinity of irrigation water in the emergency and initial growth phase. The experiment was carried out in a greenhouse using a completely randomized design (DIC), in a 23 x 2 factorial scheme, composed of 23 cowpea varieties (Canapu Vermelho, Boquinha, Pingo de Ouro, Sempre Verde, Ceará, Baeta, Manteiga, Roxão, Costela de Vaca, Feijão Branco, Coruja, Rabo de Peba Branco, Sopinha, Canapu Branco, Lisão, Canapu Miúdo, Sempre Verde Ligeiro, Vagem Roxa, Ovo de Peru, Rabo de Peba Miúdo, Feijão Azul, Canário, and Paulistinha) and two levels of salinity of irrigation water (S1 = 0.5 and S2 = 5.5 dS m-1), with four repetitions of 50 seeds. The seedlings were evaluated for emergence, vigor, salinity tolerance index, and dissimilarity. Increased salinity of irrigation water reduced emergence, vigor and dry matter accumulation of cowpea varieties. The cowpea varieties ‘Lisão’, ‘Costela de Vaca’, ‘Canário’, ‘Feijão Branco’, ‘Ceará’, and ‘Boquinha’ are the most tolerant to salinity, while the varieties ‘Sempre Verde’ and ‘Manteiga’ are the most sensitive to salinity in the emergency and initial growth phase.
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Claims 5
Claim · model-written summary
Higher irrigation salinity reduced cowpea emergence, vigor.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- Increased salinity of irrigation watere0
- Outcome
- emergence, vigore0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased salinity of irrigation water reduced emergence, vigor and dry matter accumulation of cowpea varieties”
Claim · model-written summary
Higher irrigation salinity reduced cowpea dry matter accumulation.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- Increased salinity of irrigation watere0
- Outcome
- dry matter accumulatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased salinity of irrigation water reduced emergence, vigor and dry matter accumulation of cowpea varieties”
Claim · model-written summary
Lisão, Costela de Vaca and Canário were among the most salt tolerant.
- Taxon
- cowpeaVigna unguiculatae0
- Material
- ‘Lisão’, ‘Costela de Vaca’, ‘Canário’e0
- Outcome
- most tolerant to salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cowpea varieties ‘Lisão’, ‘Costela de Vaca’, ‘Canário’, ‘Feijão Branco’, ‘Ceará’, and ‘Boquinha’ are the most tolerant to salinity”
Claim · model-written summary
Feijão Branco, Ceará and Boquinha were among the most salt tolerant.
- Taxon
- cowpeaVigna unguiculatae0
- Material
- ‘Feijão Branco’, ‘Ceará’, and ‘Boquinha’e0
- Outcome
- most tolerant to salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cowpea varieties ‘Lisão’, ‘Costela de Vaca’, ‘Canário’, ‘Feijão Branco’, ‘Ceará’, and ‘Boquinha’ are the most tolerant to salinity”
Claim · model-written summary
Sempre Verde and Manteiga were most sensitive to salinity during early growth.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- ‘Sempre Verde’ and ‘Manteiga’e0
- Organ / stage
- emergency and initial growth phasee0
- Outcome
- most sensitive to salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the varieties ‘Sempre Verde’ and ‘Manteiga’ are the most sensitive to salinity in the emergency and initial growth phase”
t0“cowpea”
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