Abstract
Cowpea suffers signifi cant production losses when subjected to salt stress, but the response varies among genotypes.The objective of this study was to evaluate the phenology and production of traditional cowpea seeds under saline water irrigation.The experiment was conducted in two stages, the fi rst one in a greenhouse to evaluate the phenology and production of cowpeagenotypes and the second one in the laboratory to assess the viability and vigor of the seeds produced in the fi rst stage. The treatmentsresulted from the combination of two salinity levels of the irrigation water (0.5 and 4.5 dS m-1) and 14 traditional cowpea varieties(Boquinha, Ceará, Costela-de-vaca, Lisão, Canário, Pingo-de-ouro, Roxão, Branco, Canapum-branco, Canapum-miúdo, Baêta, Coruja,Paulistinha, and Sempre-verde) acquired from traditional farmers in the western region of Rio Grande do Norte, Brazil. Canário, Baêta,and Coruja varieties have a higher number of fl owers per plant and earlier fl owering. Salinity reduced the number of fl owers per plant,increased abortion in all traditional varieties and reduced production in the early varieties Branco, Canapum-miúdo, Baêta, and Coruja.Cultivation under saline water irrigation did not affect the viability of the seeds from the second generation of cowpea, but reducedthe vigor of the seeds of the varieties Lisão, Pingo-de-ouro, Roxão, Branco, Canapum-branco, Canapum-miúdo, Baêta and Coruja.The traditional varieties Boquinha, Ceará, Costela-de-vaca, Canário, Paulistinha and Sempre-verde are indicated for the production ofcowpea seeds under irrigation with saline water.
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Claims 8
Claim · model-written summary
Canário, Baêta and Coruja had more flowers per plant.
- Taxon
- cowpea
Vigna unguiculatat0 - Material
- Canário, Baêta,and Corujae0
- Outcome
- number of fl owers per plante0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea”
e0“Canário, Baêta,and Coruja varieties have a higher number of fl owers per plant and earlier fl owering”
Claim · model-written summary
Canário, Baêta and Coruja flowered earlier.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- Canário, Baêta,and Corujae0
- Outcome
- fl oweringe0
- Direction
- earliere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea”
e0“Canário, Baêta,and Coruja varieties have a higher number of fl owers per plant and earlier fl owering”
Claim · model-written summary
Salinity reduced flowers per plant.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Salinitye0
- Outcome
- number of fl owers per plante0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea”
e0“Salinity reduced the number of fl owers per plant,increased abortion in all traditional varieties and reduced production in the early varieties Branco, Canapum-miúdo, Baêta, and Coruja”
Claim · model-written summary
Salinity increased abortion in all traditional varieties.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Salinitye0
- Outcome
- abortione0
- Direction
- increasede0
- Qualifier
- all traditional varietiese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea”
e0“Salinity reduced the number of fl owers per plant,increased abortion in all traditional varieties and reduced production in the early varieties Branco, Canapum-miúdo, Baêta, and Coruja”
Claim · model-written summary
Salinity reduced production in four early varieties.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- Branco, Canapum-miúdo, Baêta, and Corujae0
- Treatment
- Salinitye0
- Outcome
- productione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea”
e0“Salinity reduced the number of fl owers per plant,increased abortion in all traditional varieties and reduced production in the early varieties Branco, Canapum-miúdo, Baêta, and Coruja”
Claim · model-written summary
Saline irrigation did not affect second-generation seed viability.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- saline water irrigatione0
- Outcome
- viability of the seedse0
- Direction
- did not affecte0
- Qualifier
- second generatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea”
e0“Cultivation under saline water irrigation did not affect the viability of the seeds from the second generation of cowpea”
Claim · model-written summary
Saline irrigation reduced seed vigor in eight named varieties.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- Lisão, Pingo-de-ouro, Roxão, Branco, Canapum-branco, Canapum-miúdo, Baêta and Corujae0
- Treatment
- saline water irrigatione0
- Outcome
- vigor of the seedse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea”
e0“Cultivation under saline water irrigation did not affect the viability of the seeds from the second generation of cowpea, but reducedthe vigor of the seeds of the varieties Lisão, Pingo-de-ouro, Roxão, Branco, Canapum-branco, Canapum-miúdo, Baêta and Coruja”
Claim · model-written summary
Six traditional varieties were recommended for seed production under saline irrigation.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- Boquinha, Ceará, Costela-de-vaca, Canário, Paulistinha and Sempre-verdee0
- Outcome
- production ofcowpea seeds under irrigation with saline watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea”
e0“The traditional varieties Boquinha, Ceará, Costela-de-vaca, Canário, Paulistinha and Sempre-verde are indicated for the production ofcowpea seeds under irrigation with saline water”
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