Radish (Raphanus sativus L.) morphophysiology under salinity stress and ascorbic acid treatments
The use of saline or low-quality water in agriculture is an alternative to increasing water demand, especially in arid or semi-arid regions. However, the use of water with high levels of salts causes disturbances in plants, which can lead to their death; thus, alternatives to mitigate these effects are relevant in current agriculture. Currently, antioxidants are used to mitigate the effects of salts in plants, and among them ascorbic acid has been frequently mentioned. Therefore, the aim of this study was to evaluate the effect of irrigation with saline water combined with applications of ascorbic acid on the development and photosynthetic activity of radish (Raphanus sativus L.) plants. This experiment was carried out in a greenhouse with a randomized block design, with the treatments distributed in a 5.5 incomplete factorial scheme, composed of five electrical conductivities of the irrigation water (ECw): 0.50, 1.30, 3.25, 5.20 and 6.00 dS m-1, and five ascorbic acid (AA) doses: 0.00, 0.29, 1.00, 1.71, and 2.00 mM. The evaluated variables were: shoot height, leaf number, tuberous root diameter, chlorophyll a, b and total content, chlorophyll a/b ratio, initial fluorescence, maximum fluorescence, variable fluorescence and quantum yield of photosystem II. The saline water influenced the analyzed variables in the radish crop regardless of the ascorbic acid application. The ascorbic acid was not efficient in attenuating the deleterious effect of salinity in the irrigation water on the development and fluorescence of the radish. However, it was observed that the concentration of 1.00 mM of ascorbic acid promoted an increase in chlorophyll a, b and total in the saltstressed radish plants.
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Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias
2018
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Basílio, Ana Gabriela de Sousa de Sousa, Leonardo Vieira da Silva, Toshik Iarley de Moura, Joana Gomes Gonçalves, Anderson Carlos de Melo de Melo Filho, José Sebastião Leal, Ygor Henrique Dias, Thiago Jardelino |
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Basílio, Ana Gabriela de Sousa de Sousa, Leonardo Vieira da Silva, Toshik Iarley de Moura, Joana Gomes Gonçalves, Anderson Carlos de Melo de Melo Filho, José Sebastião Leal, Ygor Henrique Dias, Thiago Jardelino Radish (Raphanus sativus L.) morphophysiology under salinity stress and ascorbic acid treatments |
| author_facet |
Basílio, Ana Gabriela de Sousa de Sousa, Leonardo Vieira da Silva, Toshik Iarley de Moura, Joana Gomes Gonçalves, Anderson Carlos de Melo de Melo Filho, José Sebastião Leal, Ygor Henrique Dias, Thiago Jardelino |
| author_sort |
Basílio, Ana Gabriela de Sousa |
| title |
Radish (Raphanus sativus L.) morphophysiology under salinity stress and ascorbic acid treatments |
| title_short |
Radish (Raphanus sativus L.) morphophysiology under salinity stress and ascorbic acid treatments |
| title_full |
Radish (Raphanus sativus L.) morphophysiology under salinity stress and ascorbic acid treatments |
| title_fullStr |
Radish (Raphanus sativus L.) morphophysiology under salinity stress and ascorbic acid treatments |
| title_full_unstemmed |
Radish (Raphanus sativus L.) morphophysiology under salinity stress and ascorbic acid treatments |
| title_sort |
radish (raphanus sativus l.) morphophysiology under salinity stress and ascorbic acid treatments |
| description |
The use of saline or low-quality water in agriculture is an alternative to increasing water demand, especially in arid or semi-arid regions. However, the use of water with high levels of salts causes disturbances in plants, which can lead to their death; thus, alternatives to mitigate these effects are relevant in current agriculture. Currently, antioxidants are used to mitigate the effects of salts in plants, and among them ascorbic acid has been frequently mentioned. Therefore, the aim of this study was to evaluate the effect of irrigation with saline water combined with applications of ascorbic acid on the development and photosynthetic activity of radish (Raphanus sativus L.) plants. This experiment was carried out in a greenhouse with a randomized block design, with the treatments distributed in a 5.5 incomplete factorial scheme, composed of five electrical conductivities of the irrigation water (ECw): 0.50, 1.30, 3.25, 5.20 and 6.00 dS m-1, and five ascorbic acid (AA) doses: 0.00, 0.29, 1.00, 1.71, and 2.00 mM. The evaluated variables were: shoot height, leaf number, tuberous root diameter, chlorophyll a, b and total content, chlorophyll a/b ratio, initial fluorescence, maximum fluorescence, variable fluorescence and quantum yield of photosystem II. The saline water influenced the analyzed variables in the radish crop regardless of the ascorbic acid application. The ascorbic acid was not efficient in attenuating the deleterious effect of salinity in the irrigation water on the development and fluorescence of the radish. However, it was observed that the concentration of 1.00 mM of ascorbic acid promoted an increase in chlorophyll a, b and total in the saltstressed radish plants. |
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Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias |
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2018 |
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https://revistas.unal.edu.co/index.php/agrocol/article/view/74149 |
| work_keys_str_mv |
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oai:www.revistas.unal.edu.co:article-741492019-08-28T21:01:05Z Radish (Raphanus sativus L.) morphophysiology under salinity stress and ascorbic acid treatments Morfofisiología del rábano (Raphanus sativus L.) bajo estrés salino y tratamientos con ácido ascórbico Basílio, Ana Gabriela de Sousa de Sousa, Leonardo Vieira da Silva, Toshik Iarley de Moura, Joana Gomes Gonçalves, Anderson Carlos de Melo de Melo Filho, José Sebastião Leal, Ygor Henrique Dias, Thiago Jardelino abiotic stress growth photosynthesis vegetable crop estrés abiótico crecimiento fotosíntesis hortaliza. The use of saline or low-quality water in agriculture is an alternative to increasing water demand, especially in arid or semi-arid regions. However, the use of water with high levels of salts causes disturbances in plants, which can lead to their death; thus, alternatives to mitigate these effects are relevant in current agriculture. Currently, antioxidants are used to mitigate the effects of salts in plants, and among them ascorbic acid has been frequently mentioned. Therefore, the aim of this study was to evaluate the effect of irrigation with saline water combined with applications of ascorbic acid on the development and photosynthetic activity of radish (Raphanus sativus L.) plants. This experiment was carried out in a greenhouse with a randomized block design, with the treatments distributed in a 5.5 incomplete factorial scheme, composed of five electrical conductivities of the irrigation water (ECw): 0.50, 1.30, 3.25, 5.20 and 6.00 dS m-1, and five ascorbic acid (AA) doses: 0.00, 0.29, 1.00, 1.71, and 2.00 mM. The evaluated variables were: shoot height, leaf number, tuberous root diameter, chlorophyll a, b and total content, chlorophyll a/b ratio, initial fluorescence, maximum fluorescence, variable fluorescence and quantum yield of photosystem II. The saline water influenced the analyzed variables in the radish crop regardless of the ascorbic acid application. The ascorbic acid was not efficient in attenuating the deleterious effect of salinity in the irrigation water on the development and fluorescence of the radish. However, it was observed that the concentration of 1.00 mM of ascorbic acid promoted an increase in chlorophyll a, b and total in the saltstressed radish plants. El uso de aguas salinas en la agricultura surge como alternativa al aumento en la demanda de agua, principalmente en regiones aridas o semiaridas. Sin embargo, el uso de agua con alto contenido de sales causa disturbios en las plantas pudiendo llevar hasta la muerte de las mismas. Por esta razon, se buscan alternativas para atenuar tales efectos. Actualmente, los antioxidantes se utilizan para mitigar los efectos de las sales en las plantas; entre estos antioxidantes s el acido ascorbico ha sido frecuentemente mencionado. Basado en lo expuesto, este trabajo tuvo por objetivo evaluar el efecto del riego con aguas salinas combinado con la aplicacion de acido ascorbico, sobre el desarrollo y actividades fotosinteticas de plantas de rabano (Raphanus sativus L.). El experimento fue desarrollado en ambiente protegido en bloques al azar con esquema factorial incompleto 5.5, con cinco conductividades electricas del agua de riego (ECw: 0.50, 1.30, 3.25, 5.20 y 6.00 dS m-1) y cinco dosis de acido ascorbico (AA: 0.00, 0.29, 1.00, 1.71 y 2.00 mM). Las caracteristicas evaluadas fueron altura de plantas, numero de hojas, diametro de la raiz tuberosa, indice de clorofila a, b, y total, relacion de clorofila a/b, fluorescencia inicial, fluorescencia maxima, fluorescencia variable y rendimiento cuantico del fotosistema II. El uso de agua salina influencio todas las variables analizadas en el cultivo del rabano independiente de la utilizacion del acido ascorbico. El uso del acido ascorbico no fue eficiente como atenuante de los efectos de la salinidad del agua de riego sobre el desarrollo y la fluorescencia del cultivo del rabano. Sin embargo, se observo que la aplicacion del acido ascorbico en la dosis de hasta 1.00 mM promueve el aumento en los indices de clorofilas a, b y total del rabano sometido al estres salino. Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias 2018-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unal.edu.co/index.php/agrocol/article/view/74149 10.15446/agron.colomb.v36n3.74149 Agronomía Colombiana; Vol. 36 No. 3 (2018); 257-265 Agronomía Colombiana; Vol. 36 Núm. 3 (2018); 257-265 Agronomía Colombiana; v. 36 n. 3 (2018); 257-265 2357-3732 0120-9965 eng https://revistas.unal.edu.co/index.php/agrocol/article/view/74149/69734 Copyright (c) 2018 Agronomía Colombiana https://creativecommons.org/licenses/by-nc-sa/4.0 |