Physiological response of Solanum phureja under water deficit
Introduction. The parameters of physiological response to drought stress are the conjugation of a series of attributes of slow or fast action. The gas exchange variables are classified as fast-acting, and their level of occurrence or affection depends on the interaction between factors such as genotype, duration and intensity, and the phenological stage of occurrence of the stress. Objective. To identify the levels of physiological response of Solanum phureja under progressive water deficit stress. Materials and methods. The experiment was conducted between 2019 and 2020, under semi-controlled conditions at the Obonuco Research Center of the Colombian Agricultural Research Corporation, where four potato cultivars were planted, half of the trial was maintained with irrigation at field capacity and the other part was suspended to induce water deficit stress for 15 days, then rehydrated; variables of gas exchange, chlorophyll and photosynthetic efficiency were evaluated every three days. Results. Statistically significant differences were presented, with the maximum values of gas exchange in plants of the control treatment with 16.67 µmol m-2 s-1 photosynthesis rate (A); 0.34 mol m-2 s-1 stomatal conductance (gs) 5.5 mmol m-2 s-1 transpiration (E) and in stress 1.17 µmol m-2 s-1 (A); 0.013 mol m-2 s-1 (gs); 0.29 mmol m-2 s-1 (E). As for chlorophyll content, values between 451.7 and 474.69 m-2 s-1 were presented with irrigation and without irrigation, respectively. Conclusions. Stomatic closure was the earliest response to water deficit, and potato plants showed recovery of gas exchange values after the supply of irrigation following stress. Finally, three levels of physiological response were identified: mild, moderate and severe stress according to the intensity and duration of stress, which is useful for future studies and irrigation schedules.
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Universidad de Costa Rica
2024
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López-Rendón, Juan Fernando Rodríguez-Hernández, Pedro Meneses Buitrago, Diego Hernan Lopez-Peñafiel, Hyrcania-Vanessa |
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López-Rendón, Juan Fernando Rodríguez-Hernández, Pedro Meneses Buitrago, Diego Hernan Lopez-Peñafiel, Hyrcania-Vanessa Physiological response of Solanum phureja under water deficit |
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López-Rendón, Juan Fernando Rodríguez-Hernández, Pedro Meneses Buitrago, Diego Hernan Lopez-Peñafiel, Hyrcania-Vanessa |
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López-Rendón, Juan Fernando |
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Physiological response of Solanum phureja under water deficit |
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Physiological response of Solanum phureja under water deficit |
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Physiological response of Solanum phureja under water deficit |
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Physiological response of Solanum phureja under water deficit |
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Physiological response of Solanum phureja under water deficit |
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physiological response of solanum phureja under water deficit |
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Introduction. The parameters of physiological response to drought stress are the conjugation of a series of attributes of slow or fast action. The gas exchange variables are classified as fast-acting, and their level of occurrence or affection depends on the interaction between factors such as genotype, duration and intensity, and the phenological stage of occurrence of the stress. Objective. To identify the levels of physiological response of Solanum phureja under progressive water deficit stress. Materials and methods. The experiment was conducted between 2019 and 2020, under semi-controlled conditions at the Obonuco Research Center of the Colombian Agricultural Research Corporation, where four potato cultivars were planted, half of the trial was maintained with irrigation at field capacity and the other part was suspended to induce water deficit stress for 15 days, then rehydrated; variables of gas exchange, chlorophyll and photosynthetic efficiency were evaluated every three days. Results. Statistically significant differences were presented, with the maximum values of gas exchange in plants of the control treatment with 16.67 µmol m-2 s-1 photosynthesis rate (A); 0.34 mol m-2 s-1 stomatal conductance (gs) 5.5 mmol m-2 s-1 transpiration (E) and in stress 1.17 µmol m-2 s-1 (A); 0.013 mol m-2 s-1 (gs); 0.29 mmol m-2 s-1 (E). As for chlorophyll content, values between 451.7 and 474.69 m-2 s-1 were presented with irrigation and without irrigation, respectively. Conclusions. Stomatic closure was the earliest response to water deficit, and potato plants showed recovery of gas exchange values after the supply of irrigation following stress. Finally, three levels of physiological response were identified: mild, moderate and severe stress according to the intensity and duration of stress, which is useful for future studies and irrigation schedules. |
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Universidad de Costa Rica |
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2024 |
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https://revistas.ucr.ac.cr/index.php/agromeso/article/view/55692 |
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AT lopezrendonjuanfernando physiologicalresponseofsolanumphurejaunderwaterdeficit AT rodriguezhernandezpedro physiologicalresponseofsolanumphurejaunderwaterdeficit AT menesesbuitragodiegohernan physiologicalresponseofsolanumphurejaunderwaterdeficit AT lopezpenafielhyrcaniavanessa physiologicalresponseofsolanumphurejaunderwaterdeficit AT lopezrendonjuanfernando respuestafisiologicadesolanumphurejabajodeficithidrico AT rodriguezhernandezpedro respuestafisiologicadesolanumphurejabajodeficithidrico AT menesesbuitragodiegohernan respuestafisiologicadesolanumphurejabajodeficithidrico AT lopezpenafielhyrcaniavanessa respuestafisiologicadesolanumphurejabajodeficithidrico |
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oai:portal.ucr.ac.cr:article556922024-01-04T16:58:33Z Physiological response of Solanum phureja under water deficit Respuesta fisiológica de Solanum phureja bajo déficit hídrico López-Rendón, Juan Fernando Rodríguez-Hernández, Pedro Meneses Buitrago, Diego Hernan Lopez-Peñafiel, Hyrcania-Vanessa drought stress photosynthesis potato acclimatization estrés de sequía fotosíntesis papa aclimatación Introduction. The parameters of physiological response to drought stress are the conjugation of a series of attributes of slow or fast action. The gas exchange variables are classified as fast-acting, and their level of occurrence or affection depends on the interaction between factors such as genotype, duration and intensity, and the phenological stage of occurrence of the stress. Objective. To identify the levels of physiological response of Solanum phureja under progressive water deficit stress. Materials and methods. The experiment was conducted between 2019 and 2020, under semi-controlled conditions at the Obonuco Research Center of the Colombian Agricultural Research Corporation, where four potato cultivars were planted, half of the trial was maintained with irrigation at field capacity and the other part was suspended to induce water deficit stress for 15 days, then rehydrated; variables of gas exchange, chlorophyll and photosynthetic efficiency were evaluated every three days. Results. Statistically significant differences were presented, with the maximum values of gas exchange in plants of the control treatment with 16.67 µmol m-2 s-1 photosynthesis rate (A); 0.34 mol m-2 s-1 stomatal conductance (gs) 5.5 mmol m-2 s-1 transpiration (E) and in stress 1.17 µmol m-2 s-1 (A); 0.013 mol m-2 s-1 (gs); 0.29 mmol m-2 s-1 (E). As for chlorophyll content, values between 451.7 and 474.69 m-2 s-1 were presented with irrigation and without irrigation, respectively. Conclusions. Stomatic closure was the earliest response to water deficit, and potato plants showed recovery of gas exchange values after the supply of irrigation following stress. Finally, three levels of physiological response were identified: mild, moderate and severe stress according to the intensity and duration of stress, which is useful for future studies and irrigation schedules. Introducción. Los parámetros de respuesta fisiológica al estrés por sequia son la conjugación de una serie de atributos de acción lenta o rápida. Las variables de intercambio gaseoso son catalogadas como de respuesta rápida, su nivel de aparición o afección dependen de la interacción entre factores como el genotipo, duración e intensidad y la etapa fenológica de ocurrencia del estrés. Objetivo. Identificar los niveles de respuesta fisiológica que presenta Solanum phureja bajo el estrés progresivo por déficit hídrico. Materiales y métodos. El experimento se realizó entre 2019 y 2020, bajo condiciones semi-controladas en el Centro de Investigación Obonuco de la Corporación Colombiana de Investigación Agropecuaria, donde se sembraron cuatro cultivares de papa, la mitad del ensayo se mantuvo con riego a capacidad de campo y a la otra parte se le suspendió para inducir estrés por déficit hídrico durante 15 días, luego se rehidrataron; se evaluaron variables de intercambio gaseoso, clorofila y eficiencia fotosintética cada tres días. Resultados. Se presentaron diferencias significativas estadísticamente, con los valores máximos de intercambio gaseoso en plantas del tratamiento control con 16,67 µmol m-2 s-1 tasa de fotosíntesis (A); 0,34 mol m-2 s-1 conductancia estomática (gs) 5,5 mmol m-2 s-1 transpiración (E) y en estrés 1,17 µmol m-2 s-1 (A); 0,013 mol m-2 s-1 (gs); 0,29 mmol m-2 s-1 (E). En cuanto al contenido de clorofila, se presentaron valores entre 451,7 y 474,69 mg m-2 con riego y sin riego, respectivamente. Conclusiones El cierre estomático fue la respuesta más temprana al déficit hídrico, además las plantas de papa presentaron recuperación de los valores de intercambio gaseoso después del suministro de riego posterior al estrés. Finalmente se identificaron tres niveles de respuesta fisiológica, estrés leve, moderado y severo según la intensidad y duración del estrés, lo cual es de utilidad para futuros estudios y planteamientos de calendarios de riego. Universidad de Costa Rica 2024-01-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article text texto application/pdf https://revistas.ucr.ac.cr/index.php/agromeso/article/view/55692 10.15517/am.2024.55692 Agronomía Mesoamericana; 2024: Early view; 55692 Agronomía Mesoamericana; 2024: Visualización anticipada; 55692 Agronomía Mesoamericana; 2024: Early view; 55692 2215-3608 1021-7444 spa https://revistas.ucr.ac.cr/index.php/agromeso/article/view/55692/58759 Copyright (c) 2024 Juan Fernando López-Rendón, Pedro Rodríguez-Hernández, Diego Hernan Meneses Buitrago, Hyrcania-Vanessa Lopez-Peñafiel https://creativecommons.org/licenses/by-nc-nd/4.0 |