Morphophysiology of cowpea under salt stress and application of carbon-based nanobiostimulant in the vegetative stage
ABSTRACT Several technologies have been implemented to improve plant performance in irrigated crops, and one of them is the use of nanobiostimulants. Therefore, the aim of the present study was to explore the effects of applying different concentrations of a carbon-based biostimulant on the morphoph...
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Universidade Federal de Campina Grande
2024-03-01
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| Series: | Revista Brasileira de Engenharia Agrícola e Ambiental |
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| author | Letícia K. B. de Oliveira Rafael S. da Costa Johny de S. Silva Bruna A. da Silva Késsia V. G. de Lima Maria B. dos S. Pinto Ana B. P. Batista Felipe J. L. da Silva Toshik I. da Silva Rosilene O. Mesquita |
| author_facet | Letícia K. B. de Oliveira Rafael S. da Costa Johny de S. Silva Bruna A. da Silva Késsia V. G. de Lima Maria B. dos S. Pinto Ana B. P. Batista Felipe J. L. da Silva Toshik I. da Silva Rosilene O. Mesquita |
| author_sort | Letícia K. B. de Oliveira |
| collection | DOAJ |
| description | ABSTRACT Several technologies have been implemented to improve plant performance in irrigated crops, and one of them is the use of nanobiostimulants. Therefore, the aim of the present study was to explore the effects of applying different concentrations of a carbon-based biostimulant on the morphophysiology of cowpea plants subjected to varying electrical conductivities of irrigation water. The experiment was performed in a completely randomized design, in a 2 × 6 factorial scheme, with two electrical conductivities of irrigation water (ECw: 0.35 and 4.0 dS m-1) and six concentrations of nanobiostimulant applied through the leaves (0, 80, 160, 240, 320, and 400 mg L-1), with four replications. Growth and gas exchange variables were evaluated 31 days after sowing (V9 stage). Concentrations between 240 and 320 mg L-1 of carbon-based nanobiostimulant promoted greater increases in growth and physiological variables, but they caused decreases in non-photochemical quenching. Water electrical conductivity of 4.0 dS m-1 reduced the number of leaves (17.1%), stem diameter (10.0%), SPAD index (10.3%), net photosynthesis (10.9%), stomatal conductance (46.4%), transpiration (34.5%), instantaneous carboxylation efficiency (22.4%), and photochemical quenching (4.5%); in contrast, it increased the ratio between internal and ambient CO2 concentration (18.0%), leaf temperature (2.9%), water use efficiency (32.5%), and non-photochemical quenching (12.4%). Concentrations of 240 to 320 mg L-1 of the nanobiostimulant enhance the development and gas exchange of cowpea plants under non-stress conditions, whereas the concentration of 240 mg L-1 promotes the maximum increase in plant height under salinity. |
| format | Article |
| id | doaj-art-79d1db0b12c44dd6ba7cf3257e736bf1 |
| institution | DOAJ |
| issn | 1807-1929 |
| language | English |
| publishDate | 2024-03-01 |
| publisher | Universidade Federal de Campina Grande |
| record_format | Article |
| series | Revista Brasileira de Engenharia Agrícola e Ambiental |
| spelling | doaj-art-79d1db0b12c44dd6ba7cf3257e736bf12025-08-20T03:07:02ZengUniversidade Federal de Campina GrandeRevista Brasileira de Engenharia Agrícola e Ambiental1807-19292024-03-0128410.1590/1807-1929/agriambi.v28n4e279070Morphophysiology of cowpea under salt stress and application of carbon-based nanobiostimulant in the vegetative stageLetícia K. B. de Oliveirahttps://orcid.org/0000-0001-5744-1016Rafael S. da Costahttps://orcid.org/0000-0002-3158-2117Johny de S. Silvahttps://orcid.org/0000-0001-5673-7114Bruna A. da Silvahttps://orcid.org/0000-0002-2481-2463Késsia V. G. de Limahttps://orcid.org/0000-0003-1413-1346Maria B. dos S. Pintohttps://orcid.org/0009-0002-1052-2833Ana B. P. Batistahttps://orcid.org/0000-0002-1180-4237Felipe J. L. da Silvahttps://orcid.org/0000-0003-4599-9332Toshik I. da Silvahttps://orcid.org/0000-0003-0704-2046Rosilene O. Mesquitahttps://orcid.org/0000-0002-6310-8196ABSTRACT Several technologies have been implemented to improve plant performance in irrigated crops, and one of them is the use of nanobiostimulants. Therefore, the aim of the present study was to explore the effects of applying different concentrations of a carbon-based biostimulant on the morphophysiology of cowpea plants subjected to varying electrical conductivities of irrigation water. The experiment was performed in a completely randomized design, in a 2 × 6 factorial scheme, with two electrical conductivities of irrigation water (ECw: 0.35 and 4.0 dS m-1) and six concentrations of nanobiostimulant applied through the leaves (0, 80, 160, 240, 320, and 400 mg L-1), with four replications. Growth and gas exchange variables were evaluated 31 days after sowing (V9 stage). Concentrations between 240 and 320 mg L-1 of carbon-based nanobiostimulant promoted greater increases in growth and physiological variables, but they caused decreases in non-photochemical quenching. Water electrical conductivity of 4.0 dS m-1 reduced the number of leaves (17.1%), stem diameter (10.0%), SPAD index (10.3%), net photosynthesis (10.9%), stomatal conductance (46.4%), transpiration (34.5%), instantaneous carboxylation efficiency (22.4%), and photochemical quenching (4.5%); in contrast, it increased the ratio between internal and ambient CO2 concentration (18.0%), leaf temperature (2.9%), water use efficiency (32.5%), and non-photochemical quenching (12.4%). Concentrations of 240 to 320 mg L-1 of the nanobiostimulant enhance the development and gas exchange of cowpea plants under non-stress conditions, whereas the concentration of 240 mg L-1 promotes the maximum increase in plant height under salinity.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662024000400212&tlng=encarbon dotsgrowthgas exchangesalinityVigna unguiculata L. |
| spellingShingle | Letícia K. B. de Oliveira Rafael S. da Costa Johny de S. Silva Bruna A. da Silva Késsia V. G. de Lima Maria B. dos S. Pinto Ana B. P. Batista Felipe J. L. da Silva Toshik I. da Silva Rosilene O. Mesquita Morphophysiology of cowpea under salt stress and application of carbon-based nanobiostimulant in the vegetative stage Revista Brasileira de Engenharia Agrícola e Ambiental carbon dots growth gas exchange salinity Vigna unguiculata L. |
| title | Morphophysiology of cowpea under salt stress and application of carbon-based nanobiostimulant in the vegetative stage |
| title_full | Morphophysiology of cowpea under salt stress and application of carbon-based nanobiostimulant in the vegetative stage |
| title_fullStr | Morphophysiology of cowpea under salt stress and application of carbon-based nanobiostimulant in the vegetative stage |
| title_full_unstemmed | Morphophysiology of cowpea under salt stress and application of carbon-based nanobiostimulant in the vegetative stage |
| title_short | Morphophysiology of cowpea under salt stress and application of carbon-based nanobiostimulant in the vegetative stage |
| title_sort | morphophysiology of cowpea under salt stress and application of carbon based nanobiostimulant in the vegetative stage |
| topic | carbon dots growth gas exchange salinity Vigna unguiculata L. |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662024000400212&tlng=en |
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