Thermal imaging to phenotype traditional maize landraces for drought tolerance

Thermal imaging to phenotype traditional maize landraces for drought tolerance

dc.creatorCosta, Joaquim Miguel
dc.creatorTejero, Ivan Francisco Garcia
dc.creatorZuazo, Victor Hugo Duran
dc.creatorLima, Roberta Samara Nunes da
dc.creatorChaves, Maria Manuela
dc.creatorVaz Patto, Maria Carlota
dc.date2015-12-29
dc.date2022-03-21T20:07:36Z
dc.date2022-03-21T20:07:36Z
dc.date.accessioned2023-08-23T16:10:17Z
dc.date.available2023-08-23T16:10:17Z
dc.identifierhttps://comunicatascientiae.com.br/comunicata/article/view/960
dc.identifier10.14295/cs.v6i3.960
dc.identifierhttp://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/77747
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8368082
dc.descriptionSearching and identification of new crops or varieties with higher adaptation or resistance to water stress is one of the strategies to make agriculture profitable and more sustainable. Especially en arid and semi areas with limiting water resources. This study establishes a practical, fast and replicable protocol to select maize genotypes for its capability to respond to water stress. Eight Portuguese maize landraces (LD), traditionally grown in areas with different altitude and subjected to potentially different degrees of water stress (low altitude = potentially lower stress; high altitude = potentially higher stress) was used. Seedlings were subjected to continuous watering (FI) or forced to water withholding (non-irrigated) for a period of 7-8 days followed by re-watering (NI). Leaf temperature was determined every 48 h by thermal imaging and the temperature difference between NI and FI plants (ΔTNI-FI) was calculated. We found that those genotypes that traditionally had been grown at higher altitudes kept more stable leaf temperature values under dry or wet conditions (small ΔTNI-FI) even under severe water stress. These results will help to optimize a screening protocol for maize seedlings and select novel genotypes or LDs better adapted to water stress, especially in regions where irrigation water is scarce.
dc.descriptionSearching and identification of new crops or varieties with higher adaptation or resistance to water stress is one of the strategies to make agriculture profitable and more sustainable. Especially en arid and semi areas with limiting water resources. This study establishes a practical, fast and replicable protocol to select maize genotypes for its capability to respond to water stress. Eight Portuguese maize landraces (LD), traditionally grown in areas with different altitude and subjected to potentially different degrees of water stress (low altitude = potentially lower stress; high altitude = potentially higher stress) was used. Seedlings were subjected to continuous watering (FI) or forced to water withholding (non-irrigated) for a period of 7-8 days followed by re-watering (NI). Leaf temperature was determined every 48 h by thermal imaging and the temperature difference between NI and FI plants (ΔTNI-FI) was calculated. We found that those genotypes that traditionally had been grown at higher altitudes kept more stable leaf temperature values under dry or wet conditions (small ΔTNI-FI) even under severe water stress. These results will help to optimize a screening protocol for maize seedlings and select novel genotypes or LDs better adapted to water stress, especially in regions where irrigation water is scarce.
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherFederal University of Piauí
dc.relationhttps://comunicatascientiae.com.br/comunicata/article/view/960/351
dc.relationhttps://comunicatascientiae.com.br/comunicata/article/view/960/653
dc.relationhttps://comunicatascientiae.com.br/comunicata/article/view/960/680
dc.rightsCopyright (c) 2016 Joaquim Miguel Costa, Ivan Francisco Garcia Tejero, Victor Hugo Duran zuazo, Roberta Samara Nunes da Lima, Maria Manuela Chaves, Maria Carlota Vaz Patto
dc.sourceComunicata Scientiae; Vol. 6 No. 3 (2015); 334-343
dc.sourceComunicata Scientiae; v. 6 n. 3 (2015); 334-343
dc.source2177-5133
dc.source2176-9079
dc.source10.14295/cs.v6i3
dc.subjectmaize
dc.subjectgenotypes
dc.subjectwater stress
dc.subjectleaf temperature
dc.subjectfast plant screening
dc.subjectmaize
dc.subjectgenotypes
dc.subjectwater stress
dc.subjectleaf temperature
dc.subjectfast plant screening
dc.titleThermal imaging to phenotype traditional maize landraces for drought tolerance
dc.titleThermal imaging to phenotype traditional maize landraces for drought tolerance
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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