Unraveling Ecophysiological Mechanisms in Potatoes under Different Irrigation Methods: A Preliminary Field Evaluation

Potatoes—a global food security and staple crop—is threatened by dry spells in drought-prone areas. The use of physiological thresholds to save water while maintaining a reasonable tuber yield has been proposed, but their effects on physiological performances and usefulness under different irrigatio...

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Autores principales:	Silva-Díaz, Cecilia, Ramírez, David A., Rodríguez-Delfín, Alfredo, Mendiburu, Felipe de, Rinza, Javier, Ninanya, Johan, Loayza, Hildo, Quiroz, Roberto
Formato:	Artículo
Lenguaje:	Inglés
Publicado:	2020
Materias:	SOLANUM TUBEROSUM TUBERCULO PAPA ESTACIÓN SECA SEQUIA RIEGO POR GOTEO RENDIMIENTO DE CULTIVOS ESCASEZ DE AGUA ESTRES HIDRICO SENESCENCIA
Acceso en línea:	https://repositorio.catie.ac.cr/handle/11554/9473 https://doi.org/10.3390/agronomy10060827

id	RepoCATIE9473
record_format	dspace
spelling	RepoCATIE94732023-11-16T16:22:52Z Unraveling Ecophysiological Mechanisms in Potatoes under Different Irrigation Methods: A Preliminary Field Evaluation Silva-Díaz, Cecilia Ramírez, David A. Rodríguez-Delfín, Alfredo Mendiburu, Felipe de Rinza, Javier Ninanya, Johan Loayza, Hildo Quiroz, Roberto SOLANUM TUBEROSUM TUBERCULO PAPA ESTACIÓN SECA SEQUIA RIEGO POR GOTEO RENDIMIENTO DE CULTIVOS ESCASEZ DE AGUA ESTRES HIDRICO SENESCENCIA Potatoes—a global food security and staple crop—is threatened by dry spells in drought-prone areas. The use of physiological thresholds to save water while maintaining a reasonable tuber yield has been proposed, but their effects on physiological performances and usefulness under different irrigation methods are yet to be evaluated. In this study, photosynthetic traits were monitored to assess the effect of water restriction and rewatering under drip (DI) and furrow (FI) irrigations. The treatments consisted of two maximum light-saturated stomatal conductance (g s_max ) irrigation thresholds (T2: 0.15 and T3: 0.05 mol H2O m −2 s −1 ) compared with a fully irrigated control (g s_max > 0.3 mol H2O m −2 s −1 ). DI used less water than FI but promoted early senescence and low percentage of maximum assimilation rate (PMA) at late developmental stages. FI caused no yield penalization in T2 and higher recovery of carbon isotope discrimination and PMA than DI. It is suggested that moderate water quantities of early and frequently water pulses in the irrigation, promote short-term water stress memory improvement, senescence delay and more capability of recovery at late stages. MDPI : Basel (Switzerland) 2020-07-01T02:18:43Z 2020-07-01T02:18:43Z 2020 Artículo Silva-Diaz, C.; Ramírez, D.; Rodríguez-Delfín, A.; Mendiburu, F. de; Rinza, J.; Ninanya, J.; Loayza, H.; Quiroz, R. 2020. Unraveling ecophysiological mechanisms in potatoes under different irrigation methods: A preliminary field evaluation. Agronomy. ISSN 2073-4395. 10(6), 827 2073-4395 https://repositorio.catie.ac.cr/handle/11554/9473 https://doi.org/10.3390/agronomy10060827 en Agronomy info:eu-repo/semantics/openAccess application/pdf
institution	Centro Agronómico Tropical de Investigación y Enseñanza
collection	Repositorio CATIE
language	Inglés
topic	SOLANUM TUBEROSUM TUBERCULO PAPA ESTACIÓN SECA SEQUIA RIEGO POR GOTEO RENDIMIENTO DE CULTIVOS ESCASEZ DE AGUA ESTRES HIDRICO SENESCENCIA
spellingShingle	SOLANUM TUBEROSUM TUBERCULO PAPA ESTACIÓN SECA SEQUIA RIEGO POR GOTEO RENDIMIENTO DE CULTIVOS ESCASEZ DE AGUA ESTRES HIDRICO SENESCENCIA Silva-Díaz, Cecilia Ramírez, David A. Rodríguez-Delfín, Alfredo Mendiburu, Felipe de Rinza, Javier Ninanya, Johan Loayza, Hildo Quiroz, Roberto Unraveling Ecophysiological Mechanisms in Potatoes under Different Irrigation Methods: A Preliminary Field Evaluation
description	Potatoes—a global food security and staple crop—is threatened by dry spells in drought-prone areas. The use of physiological thresholds to save water while maintaining a reasonable tuber yield has been proposed, but their effects on physiological performances and usefulness under different irrigation methods are yet to be evaluated. In this study, photosynthetic traits were monitored to assess the effect of water restriction and rewatering under drip (DI) and furrow (FI) irrigations. The treatments consisted of two maximum light-saturated stomatal conductance (g s_max ) irrigation thresholds (T2: 0.15 and T3: 0.05 mol H2O m −2 s −1 ) compared with a fully irrigated control (g s_max > 0.3 mol H2O m −2 s −1 ). DI used less water than FI but promoted early senescence and low percentage of maximum assimilation rate (PMA) at late developmental stages. FI caused no yield penalization in T2 and higher recovery of carbon isotope discrimination and PMA than DI. It is suggested that moderate water quantities of early and frequently water pulses in the irrigation, promote short-term water stress memory improvement, senescence delay and more capability of recovery at late stages.
format	Artículo
author	Silva-Díaz, Cecilia Ramírez, David A. Rodríguez-Delfín, Alfredo Mendiburu, Felipe de Rinza, Javier Ninanya, Johan Loayza, Hildo Quiroz, Roberto
author_facet	Silva-Díaz, Cecilia Ramírez, David A. Rodríguez-Delfín, Alfredo Mendiburu, Felipe de Rinza, Javier Ninanya, Johan Loayza, Hildo Quiroz, Roberto
author_sort	Silva-Díaz, Cecilia
title	Unraveling Ecophysiological Mechanisms in Potatoes under Different Irrigation Methods: A Preliminary Field Evaluation
title_short	Unraveling Ecophysiological Mechanisms in Potatoes under Different Irrigation Methods: A Preliminary Field Evaluation
title_full	Unraveling Ecophysiological Mechanisms in Potatoes under Different Irrigation Methods: A Preliminary Field Evaluation
title_fullStr	Unraveling Ecophysiological Mechanisms in Potatoes under Different Irrigation Methods: A Preliminary Field Evaluation
title_full_unstemmed	Unraveling Ecophysiological Mechanisms in Potatoes under Different Irrigation Methods: A Preliminary Field Evaluation
title_sort	unraveling ecophysiological mechanisms in potatoes under different irrigation methods: a preliminary field evaluation
publishDate	2020
url	https://repositorio.catie.ac.cr/handle/11554/9473 https://doi.org/10.3390/agronomy10060827
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Unraveling Ecophysiological Mechanisms in Potatoes under Different Irrigation Methods: A Preliminary Field Evaluation

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