Physiological indices and production of sesame under salt stress and nitrate/ammonium proportions
In semi-arid regions, the occurrence of water with high concentration of salts is common, which compromises the growth and consequently the production of crops. Thus, this study aimed to evaluate the gas exchanges and production of sesame, cv. CNPA G3, irrigated with saline water and fertilized wit...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Uberlândia
2017-05-01
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| Series: | Bioscience Journal |
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| Online Access: | https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/36528 |
| _version_ | 1818156955744600064 |
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| author | Adaan Sudario Dias Geovani Soares de Lima Lauriane Almeida dos Anjos Soares Hans Raj Gheyi Reginaldo Gomes Nobre João Batista dos Santos Francisco Vanies da Silva Sá |
| author_facet | Adaan Sudario Dias Geovani Soares de Lima Lauriane Almeida dos Anjos Soares Hans Raj Gheyi Reginaldo Gomes Nobre João Batista dos Santos Francisco Vanies da Silva Sá |
| author_sort | Adaan Sudario Dias |
| collection | DOAJ |
| description |
In semi-arid regions, the occurrence of water with high concentration of salts is common, which compromises the growth and consequently the production of crops. Thus, this study aimed to evaluate the gas exchanges and production of sesame, cv. CNPA G3, irrigated with saline water and fertilized with different proportions of nitrate and ammonium, in an experiment conducted using lysimeters in a greenhouse in the municipality of Campina Grande-PB, Brazil. The treatments were arranged in randomized blocks and analyzed in a 5 x 5 factorial scheme, with three replicates, relative to five levels of electrical conductivity of the irrigation water - ECw (0.6, 1.2, 1.8, 2.4 and 3.0 dS m-1) and five proportions of nitrate/ammonium - NO3-/NH4+ (200/0, 150/50, 100/100, 50/150 and 0/200 mg of N kg-1 of soil). Irrigation with water of salinity level higher than 0.6 dS m-1 promoted negative effect on gas exchanges and production components of the sesame cv. CNPA G3. Fertilization with N exclusively in the form of NH4+ promoted increment in CO2 concentration and reduction in its assimilation rate and instantaneous carboxylation efficiency. The highest rate of CO2 assimilation, transpiration and instantaneous carboxylation efficiency were obtained when the plants were irrigated with water of 0.6 dS m-1 and fertilization with 200/0 of NO3-/NH4+. Increasing levels of water salinity promoted a decrease in the total seed mass, regardless of the proportion of NO3-/NH4+. The sesame cv. CNPA G3 is classified as sensitive to salt stress from the electrical conductivity of water of 0.6 dS m-1.
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| first_indexed | 2024-12-11T15:06:31Z |
| format | Article |
| id | doaj.art-cedbd48f32244376a28682be7284f03f |
| institution | Directory Open Access Journal |
| issn | 1981-3163 |
| language | English |
| last_indexed | 2024-12-11T15:06:31Z |
| publishDate | 2017-05-01 |
| publisher | Universidade Federal de Uberlândia |
| record_format | Article |
| series | Bioscience Journal |
| spelling | doaj.art-cedbd48f32244376a28682be7284f03f2022-12-22T01:00:52ZengUniversidade Federal de UberlândiaBioscience Journal1981-31632017-05-01333Physiological indices and production of sesame under salt stress and nitrate/ammonium proportions Adaan Sudario Dias0Geovani Soares de Lima1Lauriane Almeida dos Anjos Soares2Hans Raj Gheyi3Reginaldo Gomes Nobre4João Batista dos Santos5Francisco Vanies da Silva Sá6Universidade Federal de Campina Grande/Centro de Tecnologia e Recursos Naturais.Universidade Federal de Campina Grande/Centro de Tecnologia e Recursos Naturais.Universidade Federal de Campina Grande/Centro de Tecnologia e Recursos Naturais.Universidade Federal do Recôncavo da Bahia/Centro de Ciências Agrárias, Ambientais e BiológicasUniversidade Federal de Campina Grande/Centro de Ciências e Tecnologia AgroalimentarUniversidade Federal de Campina Grande/Centro de Ciências e Tecnologia AgroalimentarUniversidade Federal de Campina Grande/Centro de Tecnologia e Recursos Naturais. In semi-arid regions, the occurrence of water with high concentration of salts is common, which compromises the growth and consequently the production of crops. Thus, this study aimed to evaluate the gas exchanges and production of sesame, cv. CNPA G3, irrigated with saline water and fertilized with different proportions of nitrate and ammonium, in an experiment conducted using lysimeters in a greenhouse in the municipality of Campina Grande-PB, Brazil. The treatments were arranged in randomized blocks and analyzed in a 5 x 5 factorial scheme, with three replicates, relative to five levels of electrical conductivity of the irrigation water - ECw (0.6, 1.2, 1.8, 2.4 and 3.0 dS m-1) and five proportions of nitrate/ammonium - NO3-/NH4+ (200/0, 150/50, 100/100, 50/150 and 0/200 mg of N kg-1 of soil). Irrigation with water of salinity level higher than 0.6 dS m-1 promoted negative effect on gas exchanges and production components of the sesame cv. CNPA G3. Fertilization with N exclusively in the form of NH4+ promoted increment in CO2 concentration and reduction in its assimilation rate and instantaneous carboxylation efficiency. The highest rate of CO2 assimilation, transpiration and instantaneous carboxylation efficiency were obtained when the plants were irrigated with water of 0.6 dS m-1 and fertilization with 200/0 of NO3-/NH4+. Increasing levels of water salinity promoted a decrease in the total seed mass, regardless of the proportion of NO3-/NH4+. The sesame cv. CNPA G3 is classified as sensitive to salt stress from the electrical conductivity of water of 0.6 dS m-1. https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/36528Sesamum indicum L.CNPA G3water scarcitynitrogen. |
| spellingShingle | Adaan Sudario Dias Geovani Soares de Lima Lauriane Almeida dos Anjos Soares Hans Raj Gheyi Reginaldo Gomes Nobre João Batista dos Santos Francisco Vanies da Silva Sá Physiological indices and production of sesame under salt stress and nitrate/ammonium proportions Bioscience Journal Sesamum indicum L. CNPA G3 water scarcity nitrogen. |
| title | Physiological indices and production of sesame under salt stress and nitrate/ammonium proportions |
| title_full | Physiological indices and production of sesame under salt stress and nitrate/ammonium proportions |
| title_fullStr | Physiological indices and production of sesame under salt stress and nitrate/ammonium proportions |
| title_full_unstemmed | Physiological indices and production of sesame under salt stress and nitrate/ammonium proportions |
| title_short | Physiological indices and production of sesame under salt stress and nitrate/ammonium proportions |
| title_sort | physiological indices and production of sesame under salt stress and nitrate ammonium proportions |
| topic | Sesamum indicum L. CNPA G3 water scarcity nitrogen. |
| url | https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/36528 |
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