Early selection of drought-tolerant Coffea arabica genotypes at the seedling stage using functional divergence:
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/72412 |
Resumo: | The development of more drought-tolerant cultivars is essential for the maintenance of global agricultural production. This study aimed to perform an early selection of drought-tolerant Coffea arabica genotypes by evaluating their functional divergence using morphological, anatomical and physiological analyses. Seedlings of 14 genotypes were subjected to the drought stress imposed by irrigation for 18 days. Growth and anatomical parameters, leaf water potential and gas exchanges were measured. Under irrigated conditions and prolonged drought (18 days), the divergence among the genotypes was determined mainly by morphological traits, such as leaf area, stem diameter and, consequently, shoot dry mass. Under moderate drought (14 days), parameters such as water potential, cuticle thickness, stomatal density, number of xylem vessels and water-use efficiency were important for the divergence of the group with the highest ability to maintain its water status. The genotypes 1, 2, 4, 11 and 12 have characteristics that contributed to the maintenance of water status, such as greater cuticle thickness, stomatal density, smaller number of xylem vessels and phloem thickness, bigger root length and greater water-use efficiency. The functional divergence combining morphological, anatomical and physiological analyses in response to the moderate drought indicated the early selection of the genotypes 1, 2, 4, 11 and 12 as more drought tolerant during the seedling stage. KEYWORDS: Coffee, water-use efficiency, leaf water potential. |
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Early selection of drought-tolerant Coffea arabica genotypes at the seedling stage using functional divergence: Seleção precoce de genótipos de Coffea arabica tolerantes à seca em estágio de mudas utilizando-se divergência funcional: The development of more drought-tolerant cultivars is essential for the maintenance of global agricultural production. This study aimed to perform an early selection of drought-tolerant Coffea arabica genotypes by evaluating their functional divergence using morphological, anatomical and physiological analyses. Seedlings of 14 genotypes were subjected to the drought stress imposed by irrigation for 18 days. Growth and anatomical parameters, leaf water potential and gas exchanges were measured. Under irrigated conditions and prolonged drought (18 days), the divergence among the genotypes was determined mainly by morphological traits, such as leaf area, stem diameter and, consequently, shoot dry mass. Under moderate drought (14 days), parameters such as water potential, cuticle thickness, stomatal density, number of xylem vessels and water-use efficiency were important for the divergence of the group with the highest ability to maintain its water status. The genotypes 1, 2, 4, 11 and 12 have characteristics that contributed to the maintenance of water status, such as greater cuticle thickness, stomatal density, smaller number of xylem vessels and phloem thickness, bigger root length and greater water-use efficiency. The functional divergence combining morphological, anatomical and physiological analyses in response to the moderate drought indicated the early selection of the genotypes 1, 2, 4, 11 and 12 as more drought tolerant during the seedling stage. KEYWORDS: Coffee, water-use efficiency, leaf water potential.O desenvolvimento de cultivares mais tolerantes à seca é essencial para a manutenção da produção agrícola mundial. Objetivou-se realizar uma seleção precoce de genótipos de Coffea arabica tolerantes à seca, avaliando-se sua divergência funcional por meio de análises morfológicas, anatômicas e fisiológicas. Mudas de 14 genótipos foram submetidas ao estresse hídrico imposto pela irrigação por 18 dias. Foram medidos parâmetros de crescimento e anatômicos, potencial hídrico foliar e trocas gasosas. Em condições irrigadas e seca prolongada (18 dias), a divergência entre os genótipos foi determinada principalmente por características morfológicas, como área foliar, diâmetro do caule e, consequentemente, massa seca da parte aérea. Sob seca moderada (14 dias), parâmetros como potencial hídrico, espessura da cutícula, densidade estomática, número de vasos do xilema e eficiência do uso da água foram importantes para a divergência do grupo com maior capacidade de manter seu estado hídrico. Os genótipos 1, 2, 4, 11 e 12 possuem características que contribuíram para a manutenção do estado hídrico, como maior espessura de cutícula, densidade estomática, menor número de vasos xilemáticos e espessura do floema, maior comprimento de raiz e maior eficiência de uso de água. A divergência funcional combinando análises morfológicas, anatômicas e fisiológicas em resposta à seca moderada indicou a seleção precoce dos genótipos 1, 2, 4, 11 e 12 como mais tolerantes à seca durante a fase de muda. PALAVRAS-CHAVE: Café, eficiência do uso de água, potencial hídrico foliar.Escola de Agronomia - Universidade Federal de Goiás2022-06-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistas.ufg.br/pat/article/view/72412Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; Vol. 52 (2022); e72412Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); Vol. 52 (2022); e72412Pesquisa Agropecuária Tropical; v. 52 (2022); e724121983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/72412/38458Copyright (c) 2022 Pesquisa Agropecuária Tropicalinfo:eu-repo/semantics/openAccessReis, André MoraesMendes, Antônio Nazareno Guimarães Abrahão, Juliana Costa de Rezende Santos, Meline de Oliveira Silva, Vânia Aparecida 2022-06-29T17:48:13Zoai:ojs.revistas.ufg.br:article/72412Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:35.722488Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
Early selection of drought-tolerant Coffea arabica genotypes at the seedling stage using functional divergence: Seleção precoce de genótipos de Coffea arabica tolerantes à seca em estágio de mudas utilizando-se divergência funcional: |
title |
Early selection of drought-tolerant Coffea arabica genotypes at the seedling stage using functional divergence: |
spellingShingle |
Early selection of drought-tolerant Coffea arabica genotypes at the seedling stage using functional divergence: Reis, André Moraes |
title_short |
Early selection of drought-tolerant Coffea arabica genotypes at the seedling stage using functional divergence: |
title_full |
Early selection of drought-tolerant Coffea arabica genotypes at the seedling stage using functional divergence: |
title_fullStr |
Early selection of drought-tolerant Coffea arabica genotypes at the seedling stage using functional divergence: |
title_full_unstemmed |
Early selection of drought-tolerant Coffea arabica genotypes at the seedling stage using functional divergence: |
title_sort |
Early selection of drought-tolerant Coffea arabica genotypes at the seedling stage using functional divergence: |
author |
Reis, André Moraes |
author_facet |
Reis, André Moraes Mendes, Antônio Nazareno Guimarães Abrahão, Juliana Costa de Rezende Santos, Meline de Oliveira Silva, Vânia Aparecida |
author_role |
author |
author2 |
Mendes, Antônio Nazareno Guimarães Abrahão, Juliana Costa de Rezende Santos, Meline de Oliveira Silva, Vânia Aparecida |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Reis, André Moraes Mendes, Antônio Nazareno Guimarães Abrahão, Juliana Costa de Rezende Santos, Meline de Oliveira Silva, Vânia Aparecida |
description |
The development of more drought-tolerant cultivars is essential for the maintenance of global agricultural production. This study aimed to perform an early selection of drought-tolerant Coffea arabica genotypes by evaluating their functional divergence using morphological, anatomical and physiological analyses. Seedlings of 14 genotypes were subjected to the drought stress imposed by irrigation for 18 days. Growth and anatomical parameters, leaf water potential and gas exchanges were measured. Under irrigated conditions and prolonged drought (18 days), the divergence among the genotypes was determined mainly by morphological traits, such as leaf area, stem diameter and, consequently, shoot dry mass. Under moderate drought (14 days), parameters such as water potential, cuticle thickness, stomatal density, number of xylem vessels and water-use efficiency were important for the divergence of the group with the highest ability to maintain its water status. The genotypes 1, 2, 4, 11 and 12 have characteristics that contributed to the maintenance of water status, such as greater cuticle thickness, stomatal density, smaller number of xylem vessels and phloem thickness, bigger root length and greater water-use efficiency. The functional divergence combining morphological, anatomical and physiological analyses in response to the moderate drought indicated the early selection of the genotypes 1, 2, 4, 11 and 12 as more drought tolerant during the seedling stage. KEYWORDS: Coffee, water-use efficiency, leaf water potential. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-06-29 |
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://revistas.ufg.br/pat/article/view/72412 |
url |
https://revistas.ufg.br/pat/article/view/72412 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/72412/38458 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Pesquisa Agropecuária Tropical info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Pesquisa Agropecuária Tropical |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; Vol. 52 (2022); e72412 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); Vol. 52 (2022); e72412 Pesquisa Agropecuária Tropical; v. 52 (2022); e72412 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
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1799874821458231296 |