Foliar carbohydrate content in maize hybrids submitted to water restriction
Main Author: | |
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Publication Date: | 2019 |
Other Authors: | , |
Format: | Article |
Language: | por |
Source: | Evidência - Ciência e Biotecnologia - Interdisciplinar |
Download full: | https://periodicos.unoesc.edu.br/evidencia/article/view/20201 |
Summary: | Water deficit is one of the main problems of agriculture and the ability of plants to overcome this stress is of great importance for the development of cultivars in breeding programs, especially in crops such as maize. The objectives of this work was to study the response of the carbohydrate content in the leaves and to verify the performance of the biometric characters in contrasting maize hybrids as to the drought tolerance during the water deficit in two phenological stages of the crop. The hybrids used in the study were DAS2B707 and DAS2B710 considered drought tolerant, due to hight performance and yield when submitted to water shortage conditions and FT510 and AS1522, considered sensitive according to results in the regional maize trials in second season at São Paulo state. A split plots design was used with three replications. The plots consisted of the three water regimens: (a) control – plants irrigated throughout the cycle; (b) water deficit from the vegetative stage (V5); and (c) water deficit from the flowering stage (R1), while the subplots consisted of the four hybrids. In general, the water deficit in the two phenological stages of the crop reduced leaf carbohydrate content, plant height, stem diameter, grain mass and total dry mass of practically all evaluated hybrids. The DAS2B707 showed a higher grain yield when there was a water deficit from the vegetative stage, indicating a higher potential under drought conditions. AS1522 was considered drought tolerant from the flowering stage due to the high content of sucrose obtained under water deficit conditions, characterizing an osmotic adjustment. |
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Foliar carbohydrate content in maize hybrids submitted to water restrictionConteúdo de carboidrato foliar em híbridos de milho submetidos à restrição hídricaTolerância à secaAjustamento OsmóticoProdutividadeDrought toleranceOsmotic adjustmentGrain yieldWater deficit is one of the main problems of agriculture and the ability of plants to overcome this stress is of great importance for the development of cultivars in breeding programs, especially in crops such as maize. The objectives of this work was to study the response of the carbohydrate content in the leaves and to verify the performance of the biometric characters in contrasting maize hybrids as to the drought tolerance during the water deficit in two phenological stages of the crop. The hybrids used in the study were DAS2B707 and DAS2B710 considered drought tolerant, due to hight performance and yield when submitted to water shortage conditions and FT510 and AS1522, considered sensitive according to results in the regional maize trials in second season at São Paulo state. A split plots design was used with three replications. The plots consisted of the three water regimens: (a) control – plants irrigated throughout the cycle; (b) water deficit from the vegetative stage (V5); and (c) water deficit from the flowering stage (R1), while the subplots consisted of the four hybrids. In general, the water deficit in the two phenological stages of the crop reduced leaf carbohydrate content, plant height, stem diameter, grain mass and total dry mass of practically all evaluated hybrids. The DAS2B707 showed a higher grain yield when there was a water deficit from the vegetative stage, indicating a higher potential under drought conditions. AS1522 was considered drought tolerant from the flowering stage due to the high content of sucrose obtained under water deficit conditions, characterizing an osmotic adjustment.O déficit hídrico é um dos principais problemas da agricultura e a habilidade das plantas superarem esse estresse é de grande importância para o desenvolvimento de cultivares em programas de melhoramento genético, principalmente em culturas como a do milho. O objetivo do trabalho foi estudar a resposta do teor de carboidrato nas folhas e verificar o desempenho dos caracteres biométricos em híbridos de milho contrastantes quanto à tolerância à seca, durante o déficit hídrico, em dois estádios fenológicos da cultura. Para isso, foram utilizados os híbridos DAS2B707 e DAS2B710, considerados tolerantes segundo informações da empresa e resultados de experimentos de avaliação de cultivares, e os híbridos FT510 e AS1522, considerados sensíveis pelas observações em experimentos de Safrinha no Estado de São Paulo. O delineamento empregado foi o de blocos casualizados, com parcelas subdivididas e três repetições. As parcelas constituíram-se nos tratamentos hídricos impostos: (a) controle – plantas irrigadas durante todo o ciclo; (b) déficit hídrico a partir do estádio vegetativo (V5); e (c) déficit hídrico a partir do estádio de florescimento (R1). De maneira geral, o déficit hídrico nos dois estádios fenológicos da cultura reduziu o conteúdo de carboidrato foliar, a altura da planta, o diâmetro do colmo, a massa de grãos e a massa seca total de praticamente todos os híbridos avaliados. O DAS2B707 se destacou por apresentar maior produtividade de grãos quando houve déficit hídrico a partir do estádio vegetativo, indicando um maior potencial produtivo em condições de seca nesse período. O AS1522 foi considerado tolerante à seca a partir do estádio de florescimento em razão do elevado teor de sacarose obtido em condições de déficit hídrico, caracterizando um ajustamento osmótico.Universidade do Oeste de Santa Catarina2019-07-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.unoesc.edu.br/evidencia/article/view/2020110.18593/eba.v19i1.20201Evidence; Vol. 19 No. 2 (2019): Evidência - Ciência e Biotecnologia; 93-112Evidência; v. 19 n. 2 (2019): Evidência - Ciência e Biotecnologia; 93-1122236-60591519-528710.18593/eba.v19i2reponame:Evidência - Ciência e Biotecnologia - Interdisciplinarinstname:Universidade do Oeste de Santa Catarina (UNOESC)instacron:UNOESCporhttps://periodicos.unoesc.edu.br/evidencia/article/view/20201/14000Copyright (c) 2019 Evidência - Ciência e Biotecnologiainfo:eu-repo/semantics/openAccessde Souza Guimarães, PaulaSarto Rocha, DanielPaterniani, Maria Elisa Ayres Guidetti Zagatto2020-10-16T20:56:40Zoai:ojs.periodicos.unoesc.edu.br:article/20201Revistahttp://editora.unoesc.edu.br/index.php/evidenciaPUBhttp://editora.unoesc.edu.br/index.php/evidencia/oaieditora@unoesc.edu.br||evidencia@unoesc.edu.br||jane.gelinski@unoesc.edu.br|| debora.pereira@unoesc.edu.br2236-60591519-5287opendoar:2020-10-16T20:56:40Evidência - Ciência e Biotecnologia - Interdisciplinar - Universidade do Oeste de Santa Catarina (UNOESC)false |
dc.title.none.fl_str_mv |
Foliar carbohydrate content in maize hybrids submitted to water restriction Conteúdo de carboidrato foliar em híbridos de milho submetidos à restrição hídrica |
title |
Foliar carbohydrate content in maize hybrids submitted to water restriction |
spellingShingle |
Foliar carbohydrate content in maize hybrids submitted to water restriction de Souza Guimarães, Paula Tolerância à seca Ajustamento Osmótico Produtividade Drought tolerance Osmotic adjustment Grain yield |
title_short |
Foliar carbohydrate content in maize hybrids submitted to water restriction |
title_full |
Foliar carbohydrate content in maize hybrids submitted to water restriction |
title_fullStr |
Foliar carbohydrate content in maize hybrids submitted to water restriction |
title_full_unstemmed |
Foliar carbohydrate content in maize hybrids submitted to water restriction |
title_sort |
Foliar carbohydrate content in maize hybrids submitted to water restriction |
author |
de Souza Guimarães, Paula |
author_facet |
de Souza Guimarães, Paula Sarto Rocha, Daniel Paterniani, Maria Elisa Ayres Guidetti Zagatto |
author_role |
author |
author2 |
Sarto Rocha, Daniel Paterniani, Maria Elisa Ayres Guidetti Zagatto |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
de Souza Guimarães, Paula Sarto Rocha, Daniel Paterniani, Maria Elisa Ayres Guidetti Zagatto |
dc.subject.por.fl_str_mv |
Tolerância à seca Ajustamento Osmótico Produtividade Drought tolerance Osmotic adjustment Grain yield |
topic |
Tolerância à seca Ajustamento Osmótico Produtividade Drought tolerance Osmotic adjustment Grain yield |
description |
Water deficit is one of the main problems of agriculture and the ability of plants to overcome this stress is of great importance for the development of cultivars in breeding programs, especially in crops such as maize. The objectives of this work was to study the response of the carbohydrate content in the leaves and to verify the performance of the biometric characters in contrasting maize hybrids as to the drought tolerance during the water deficit in two phenological stages of the crop. The hybrids used in the study were DAS2B707 and DAS2B710 considered drought tolerant, due to hight performance and yield when submitted to water shortage conditions and FT510 and AS1522, considered sensitive according to results in the regional maize trials in second season at São Paulo state. A split plots design was used with three replications. The plots consisted of the three water regimens: (a) control – plants irrigated throughout the cycle; (b) water deficit from the vegetative stage (V5); and (c) water deficit from the flowering stage (R1), while the subplots consisted of the four hybrids. In general, the water deficit in the two phenological stages of the crop reduced leaf carbohydrate content, plant height, stem diameter, grain mass and total dry mass of practically all evaluated hybrids. The DAS2B707 showed a higher grain yield when there was a water deficit from the vegetative stage, indicating a higher potential under drought conditions. AS1522 was considered drought tolerant from the flowering stage due to the high content of sucrose obtained under water deficit conditions, characterizing an osmotic adjustment. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-07-17 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.unoesc.edu.br/evidencia/article/view/20201 10.18593/eba.v19i1.20201 |
url |
https://periodicos.unoesc.edu.br/evidencia/article/view/20201 |
identifier_str_mv |
10.18593/eba.v19i1.20201 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.unoesc.edu.br/evidencia/article/view/20201/14000 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Evidência - Ciência e Biotecnologia info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 Evidência - Ciência e Biotecnologia |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade do Oeste de Santa Catarina |
publisher.none.fl_str_mv |
Universidade do Oeste de Santa Catarina |
dc.source.none.fl_str_mv |
Evidence; Vol. 19 No. 2 (2019): Evidência - Ciência e Biotecnologia; 93-112 Evidência; v. 19 n. 2 (2019): Evidência - Ciência e Biotecnologia; 93-112 2236-6059 1519-5287 10.18593/eba.v19i2 reponame:Evidência - Ciência e Biotecnologia - Interdisciplinar instname:Universidade do Oeste de Santa Catarina (UNOESC) instacron:UNOESC |
instname_str |
Universidade do Oeste de Santa Catarina (UNOESC) |
instacron_str |
UNOESC |
institution |
UNOESC |
reponame_str |
Evidência - Ciência e Biotecnologia - Interdisciplinar |
collection |
Evidência - Ciência e Biotecnologia - Interdisciplinar |
repository.name.fl_str_mv |
Evidência - Ciência e Biotecnologia - Interdisciplinar - Universidade do Oeste de Santa Catarina (UNOESC) |
repository.mail.fl_str_mv |
editora@unoesc.edu.br||evidencia@unoesc.edu.br||jane.gelinski@unoesc.edu.br|| debora.pereira@unoesc.edu.br |
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