Impact of water deficit in the relationship among alfalfa traits

Detalhes bibliográficos
Autor(a) principal: Santos, Iara Gonçalves dos
Data de Publicação: 2020
Outros Autores: Teodoro, Paulo Eduardo, Cruz, Cosme Damião, Ferreira, Reinaldo de Paula
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Bioscience journal (Online)
Texto Completo: https://seer.ufu.br/index.php/biosciencejournal/article/view/41869
Resumo: This study aimed to evaluate the relationship among traits related to yield and nutritive value of alfalfa genotypes grown under deficit and full irrigation conditions. Seventy-seven alfalfa genotypes were evaluated in two different cuts, the first one with full irrigation, and the second, with water deficit. A randomized block design with three replications was used. The evaluated traits were vigor, plant height, dry matter biomass, stem-to-leaf ratio, dry matter percentage, leaf and stem protein contents, in vitro dry matter digestibility, neutral detergent fiber, acid detergent fiber, and lignin. Significant interaction between genotypes and environments was reported for vigor, plant height, and lignin. The correlation between traits and path analysis of dry matter biomass was performed for each cut, aiming to identify auxiliary traits for indirect selection. Water availability did not alter the phenotypic and genotypic correlations, only their magnitudes. Regardless of the environment, plant height is one of the most promising traits for the selection of alfalfa genotypes with higher dry matter biomass since it showed a high direct effect in the same sense of its phenotypic correlations. However, the coefficient of determination obtained by the model applied to full irrigation was higher than that of the water-deficit environment, indicating the importance of variables not included in this study in the determination of alfalfa dry matter biomass under dry conditions.
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spelling Impact of water deficit in the relationship among alfalfa traitsImpacto do déficit de água na relação entre caracteres de alfalfaMedicago sativapath analysiscorrelationsdry matter biomass.Agricultural SciencesMedicago sativaAnálise de trilhaCorrelaçõesBiomassa de matéria secaThis study aimed to evaluate the relationship among traits related to yield and nutritive value of alfalfa genotypes grown under deficit and full irrigation conditions. Seventy-seven alfalfa genotypes were evaluated in two different cuts, the first one with full irrigation, and the second, with water deficit. A randomized block design with three replications was used. The evaluated traits were vigor, plant height, dry matter biomass, stem-to-leaf ratio, dry matter percentage, leaf and stem protein contents, in vitro dry matter digestibility, neutral detergent fiber, acid detergent fiber, and lignin. Significant interaction between genotypes and environments was reported for vigor, plant height, and lignin. The correlation between traits and path analysis of dry matter biomass was performed for each cut, aiming to identify auxiliary traits for indirect selection. Water availability did not alter the phenotypic and genotypic correlations, only their magnitudes. Regardless of the environment, plant height is one of the most promising traits for the selection of alfalfa genotypes with higher dry matter biomass since it showed a high direct effect in the same sense of its phenotypic correlations. However, the coefficient of determination obtained by the model applied to full irrigation was higher than that of the water-deficit environment, indicating the importance of variables not included in this study in the determination of alfalfa dry matter biomass under dry conditions.Este estudo objetivou avaliar a relação entre características relacionadas à produção e o valor nutritivo de genótipos de alfafa cultivados em condições de déficit e irrigação total. Setenta e sete genótipos de alfafa foram avaliados em dois cortes diferentes, o primeiro com irrigação total e o segundo com déficit hídrico. O delineamento experimental foi em blocos casualizados, com três repetições. As características avaliadas foram: vigor, altura de planta, biomassa de matéria seca, razão colmo-folha, porcentagem de matéria seca, teores foliar e foliar de proteína, digestibilidade in vitro da matéria seca, fibra em detergente neutro, fibra em detergente ácido e lignina. Houve interação significativa entre genótipos e ambientes para vigor, altura de planta e lignina. A correlação entre características e análise de trilha da biomassa da matéria seca foi realizada para cada corte, visando identificar características auxiliares para a seleção indireta. A disponibilidade de água não alterou as correlações fenotípicas e genotípicas, apenas suas magnitudes. Independentemente do ambiente, a altura das plantas é um dos caracteres mais promissores para a seleção de genótipos de alfafa com maior biomassa de matéria seca, uma vez que apresentou alto efeito direto no mesmo sentido de suas correlações fenotípicas. Entretanto, o coeficiente de determinação obtido pelo modelo aplicado à irrigação total foi superior àquele do ambiente com déficit hídrico, indicando a importância de variáveis ​​não incluídas neste estudo na determinação da biomassa de matéria seca de alfafa em condições secas.EDUFU2020-04-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/4186910.14393/BJ-v36n3a2020-41869Bioscience Journal ; Vol. 36 No. 3 (2020): May/June; 905-913Bioscience Journal ; v. 36 n. 3 (2020): Maio/Junho; 905-9131981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/41869/28633Brazil; ContemporaryCopyright (c) 2020 Iara Gonçalves dos Santos, Paulo Eduardo Teodoro, Cosme Damião Cruz, Reinaldo de Paula Ferreirahttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessSantos, Iara Gonçalves dos Teodoro, Paulo EduardoCruz, Cosme DamiãoFerreira, Reinaldo de Paula2022-06-20T13:02:35Zoai:ojs.www.seer.ufu.br:article/41869Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-06-20T13:02:35Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Impact of water deficit in the relationship among alfalfa traits
Impacto do déficit de água na relação entre caracteres de alfalfa
title Impact of water deficit in the relationship among alfalfa traits
spellingShingle Impact of water deficit in the relationship among alfalfa traits
Santos, Iara Gonçalves dos
Medicago sativa
path analysis
correlations
dry matter biomass.
Agricultural Sciences
Medicago sativa
Análise de trilha
Correlações
Biomassa de matéria seca
title_short Impact of water deficit in the relationship among alfalfa traits
title_full Impact of water deficit in the relationship among alfalfa traits
title_fullStr Impact of water deficit in the relationship among alfalfa traits
title_full_unstemmed Impact of water deficit in the relationship among alfalfa traits
title_sort Impact of water deficit in the relationship among alfalfa traits
author Santos, Iara Gonçalves dos
author_facet Santos, Iara Gonçalves dos
Teodoro, Paulo Eduardo
Cruz, Cosme Damião
Ferreira, Reinaldo de Paula
author_role author
author2 Teodoro, Paulo Eduardo
Cruz, Cosme Damião
Ferreira, Reinaldo de Paula
author2_role author
author
author
dc.contributor.author.fl_str_mv Santos, Iara Gonçalves dos
Teodoro, Paulo Eduardo
Cruz, Cosme Damião
Ferreira, Reinaldo de Paula
dc.subject.por.fl_str_mv Medicago sativa
path analysis
correlations
dry matter biomass.
Agricultural Sciences
Medicago sativa
Análise de trilha
Correlações
Biomassa de matéria seca
topic Medicago sativa
path analysis
correlations
dry matter biomass.
Agricultural Sciences
Medicago sativa
Análise de trilha
Correlações
Biomassa de matéria seca
description This study aimed to evaluate the relationship among traits related to yield and nutritive value of alfalfa genotypes grown under deficit and full irrigation conditions. Seventy-seven alfalfa genotypes were evaluated in two different cuts, the first one with full irrigation, and the second, with water deficit. A randomized block design with three replications was used. The evaluated traits were vigor, plant height, dry matter biomass, stem-to-leaf ratio, dry matter percentage, leaf and stem protein contents, in vitro dry matter digestibility, neutral detergent fiber, acid detergent fiber, and lignin. Significant interaction between genotypes and environments was reported for vigor, plant height, and lignin. The correlation between traits and path analysis of dry matter biomass was performed for each cut, aiming to identify auxiliary traits for indirect selection. Water availability did not alter the phenotypic and genotypic correlations, only their magnitudes. Regardless of the environment, plant height is one of the most promising traits for the selection of alfalfa genotypes with higher dry matter biomass since it showed a high direct effect in the same sense of its phenotypic correlations. However, the coefficient of determination obtained by the model applied to full irrigation was higher than that of the water-deficit environment, indicating the importance of variables not included in this study in the determination of alfalfa dry matter biomass under dry conditions.
publishDate 2020
dc.date.none.fl_str_mv 2020-04-13
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://seer.ufu.br/index.php/biosciencejournal/article/view/41869
10.14393/BJ-v36n3a2020-41869
url https://seer.ufu.br/index.php/biosciencejournal/article/view/41869
identifier_str_mv 10.14393/BJ-v36n3a2020-41869
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/41869/28633
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Brazil; Contemporary
dc.publisher.none.fl_str_mv EDUFU
publisher.none.fl_str_mv EDUFU
dc.source.none.fl_str_mv Bioscience Journal ; Vol. 36 No. 3 (2020): May/June; 905-913
Bioscience Journal ; v. 36 n. 3 (2020): Maio/Junho; 905-913
1981-3163
reponame:Bioscience journal (Online)
instname:Universidade Federal de Uberlândia (UFU)
instacron:UFU
instname_str Universidade Federal de Uberlândia (UFU)
instacron_str UFU
institution UFU
reponame_str Bioscience journal (Online)
collection Bioscience journal (Online)
repository.name.fl_str_mv Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)
repository.mail.fl_str_mv biosciencej@ufu.br||
_version_ 1797069079621664768

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