Thermal imaging to phenotype traditional maize landraces for drought tolerance

Costa, Joaquim Miguel; Tejero, Ivan Francisco Garcia; Zuazo, Victor Hugo Duran; Lima, Roberta Samara Nunes da; Chaves, Maria Manuela; Vaz Patto, Maria Carlota

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dc.creator	Costa, Joaquim Miguel
dc.creator	Tejero, Ivan Francisco Garcia
dc.creator	Zuazo, Victor Hugo Duran
dc.creator	Lima, Roberta Samara Nunes da
dc.creator	Chaves, Maria Manuela
dc.creator	Vaz Patto, Maria Carlota
dc.date	2015-12-29
dc.date.accessioned	2022-03-21T20:07:36Z
dc.date.available	2022-03-21T20:07:36Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/960
dc.identifier	10.14295/cs.v6i3.960
dc.identifier.uri	http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/77747
dc.description	Searching 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.	en-US
dc.description	Searching 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.	pt-BR
dc.format	application/pdf
dc.format	application/pdf
dc.format	application/pdf
dc.language	eng
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/960/351
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/960/653
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/960/680
dc.rights	Copyright (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	en-US
dc.source	Comunicata Scientiae; Vol. 6 No. 3 (2015); 334-343	en-US
dc.source	Comunicata Scientiae; v. 6 n. 3 (2015); 334-343	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.source	10.14295/cs.v6i3
dc.subject	maize	en-US
dc.subject	genotypes	en-US
dc.subject	water stress	en-US
dc.subject	leaf temperature	en-US
dc.subject	fast plant screening	en-US
dc.subject	maize	pt-BR
dc.subject	genotypes	pt-BR
dc.subject	water stress	pt-BR
dc.subject	leaf temperature	pt-BR
dc.subject	fast plant screening	pt-BR
dc.title	Thermal imaging to phenotype traditional maize landraces for drought tolerance	en-US
dc.title	Thermal imaging to phenotype traditional maize landraces for drought tolerance	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion