Light Intensity Modulates the Accumulation of Carbohydrates, Antioxidant Enzymes and Production of Iceberg Lettuce under Tropical Conditions
High solar radiation in tropical regions can affect the development, physiology, and biochemistry of plants. Our aim with this research was to evaluate the biochemical responses and production of iceberg lettuce cultivars under environments with different shadings. An experiment under field conditio...
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MDPI AG
2021-12-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/7/12/553 |
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| author | Eduardo Santana Aires Carlos Alberto Aragão Bárbara França Dantas João Domingos Rodrigues Elizabeth Orika Ono |
| author_facet | Eduardo Santana Aires Carlos Alberto Aragão Bárbara França Dantas João Domingos Rodrigues Elizabeth Orika Ono |
| author_sort | Eduardo Santana Aires |
| collection | DOAJ |
| description | High solar radiation in tropical regions can affect the development, physiology, and biochemistry of plants. Our aim with this research was to evaluate the biochemical responses and production of iceberg lettuce cultivars under environments with different shadings. An experiment under field conditions was installed in a 4 × 4 factorial scheme. Four cultivars of iceberg lettuce (Great Lakes, Winslow, Delicia, and Balsamo) and four environments with different shadings (three types of shading screens: red, ChromatiNet<sup>®</sup>, and black; and treatment under the full sun) were evaluated. Forty-five days after transplanting, the plants were harvested, and the biomass was weighed to obtain the fresh consumable part (FCP) and the biochemical parameters: total soluble sugar (TSS), reducing sugar (RS), and the activity of SOD, CAT, and POD. We found that shading modulates biochemical and productive responses of iceberg lettuce, and the main microclimatic factor related to these responses was solar radiation. We observed a negative correlation between RS and FCP. The solar radiation between 16 and 18 MJ·m<sup>−2</sup>·day<sup>−1</sup>, observed in the environments with a black screen and ChromatiNet<sup>®</sup>, promoted the highest activity of the SOD enzyme and average levels of TSS and RS, providing higher FCP of the cultivars Delícia and Balsamo in high temperatures period. |
| first_indexed | 2024-03-10T03:59:57Z |
| format | Article |
| id | doaj.art-ea8de1bdbb9046e3825e6fae1bdb3158 |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-10T03:59:57Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-ea8de1bdbb9046e3825e6fae1bdb31582023-11-23T08:38:08ZengMDPI AGHorticulturae2311-75242021-12-0171255310.3390/horticulturae7120553Light Intensity Modulates the Accumulation of Carbohydrates, Antioxidant Enzymes and Production of Iceberg Lettuce under Tropical ConditionsEduardo Santana Aires0Carlos Alberto Aragão1Bárbara França Dantas2João Domingos Rodrigues3Elizabeth Orika Ono4Department of Horticulture, School of Agronomy, São Paulo State University, Botucatu 18618-000, BrazilDepartment of Technology and Social Sciences, Bahia State University, Juazeiro 48900-000, BrazilSeeds Lab, Embrapa Semiárido, Petrolina 56302-970, BrazilDepartment of Botany, Institute of Biosciences, São Paulo State University, Botucatu 18618-000, BrazilDepartment of Botany, Institute of Biosciences, São Paulo State University, Botucatu 18618-000, BrazilHigh solar radiation in tropical regions can affect the development, physiology, and biochemistry of plants. Our aim with this research was to evaluate the biochemical responses and production of iceberg lettuce cultivars under environments with different shadings. An experiment under field conditions was installed in a 4 × 4 factorial scheme. Four cultivars of iceberg lettuce (Great Lakes, Winslow, Delicia, and Balsamo) and four environments with different shadings (three types of shading screens: red, ChromatiNet<sup>®</sup>, and black; and treatment under the full sun) were evaluated. Forty-five days after transplanting, the plants were harvested, and the biomass was weighed to obtain the fresh consumable part (FCP) and the biochemical parameters: total soluble sugar (TSS), reducing sugar (RS), and the activity of SOD, CAT, and POD. We found that shading modulates biochemical and productive responses of iceberg lettuce, and the main microclimatic factor related to these responses was solar radiation. We observed a negative correlation between RS and FCP. The solar radiation between 16 and 18 MJ·m<sup>−2</sup>·day<sup>−1</sup>, observed in the environments with a black screen and ChromatiNet<sup>®</sup>, promoted the highest activity of the SOD enzyme and average levels of TSS and RS, providing higher FCP of the cultivars Delícia and Balsamo in high temperatures period.https://www.mdpi.com/2311-7524/7/12/553bolting<i>Lactuca sativa</i> L.sugarsshadingphysiologyproduction |
| spellingShingle | Eduardo Santana Aires Carlos Alberto Aragão Bárbara França Dantas João Domingos Rodrigues Elizabeth Orika Ono Light Intensity Modulates the Accumulation of Carbohydrates, Antioxidant Enzymes and Production of Iceberg Lettuce under Tropical Conditions Horticulturae bolting <i>Lactuca sativa</i> L. sugars shading physiology production |
| title | Light Intensity Modulates the Accumulation of Carbohydrates, Antioxidant Enzymes and Production of Iceberg Lettuce under Tropical Conditions |
| title_full | Light Intensity Modulates the Accumulation of Carbohydrates, Antioxidant Enzymes and Production of Iceberg Lettuce under Tropical Conditions |
| title_fullStr | Light Intensity Modulates the Accumulation of Carbohydrates, Antioxidant Enzymes and Production of Iceberg Lettuce under Tropical Conditions |
| title_full_unstemmed | Light Intensity Modulates the Accumulation of Carbohydrates, Antioxidant Enzymes and Production of Iceberg Lettuce under Tropical Conditions |
| title_short | Light Intensity Modulates the Accumulation of Carbohydrates, Antioxidant Enzymes and Production of Iceberg Lettuce under Tropical Conditions |
| title_sort | light intensity modulates the accumulation of carbohydrates antioxidant enzymes and production of iceberg lettuce under tropical conditions |
| topic | bolting <i>Lactuca sativa</i> L. sugars shading physiology production |
| url | https://www.mdpi.com/2311-7524/7/12/553 |
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