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Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Pecuária Sudeste. |
Data corrente: |
03/05/2024 |
Data da última atualização: |
10/05/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FERREIRA, J. P.; MARQUES, D. M.; KARAM, D.; BORGHI, E.; MAGALHAES, P. C.; SOUZA, K. R. D. de; ARANTES, S. D.; SOUZA, T. C. de. |
Afiliação: |
JANAÍNA PIZA FERREIRA, UNIVERSIDADE FEDERAL DE ALFENAS; DANIELE MARIA MARQUES, UNIVERSIDADE FEDERAL DE ALFENAS; DECIO KARAM, CNPMS; EMERSON BORGHI, CPPSE; PAULO CESAR MAGALHAES, CNPMS; KAMILA REZENDE DÁZIO DE SOUZA, UNIVERSIDADE FEDERAL DE ALFENAS; SARA DOUSSEAU ARANTES, INSTITUTO CAPIXABA DE PESQUISA; THIAGO CORRÊA DE SOUZA, UNIVERSIDADE FEDERAL DE ALFENAS. |
Título: |
How does early defoliation influence the morphophysiology and biochemical characteristics of maize? |
Ano de publicação: |
2024 |
Fonte/Imprenta: |
Plant Growth Regulation, 2024. |
DOI: |
https://doi.org/10.1007/s10725-024-01145-x |
Idioma: |
Inglês |
Notas: |
First online. |
Conteúdo: |
Defoliation is a type of mechanical stress, and few studies have investigated this process in the early stages of maize development. Pest attacks, hail and machinery traffic have increased in recent decades, thus increasing this stress and potentially leading to losses. Furthermore, there are corn production systems in Brazil where early defoliation naturally occurs. Thus, the objective of this study was to determine the morphophysiological and biochemical changes in maize subjected to early defoliation and their effects on recovery from this stress. The experiment was performed in pots, and the plants were subjected to two treatments at the four fully expanded leaf stage: without defoliation (control) and with defoliation. Morphometric parameters, such as gas exchange, leaf pigment and biomolecule content, phytohormone con- tent, root morphology and leaf anatomy, were evaluated at seven and fourteen days after defoliation. Compared with the control plants, the defoliated corn plants were shorter in height, stem diameter, length, surface area, root diameter and volume, dry biomass and leaf anatomy. However, photosynthesis, chlorophyll content and nutrient content were similar in both treatments. After seven days of treatment, the amino acid content increased in the defoliated plants, and after fourteen days, the reducing sugars, amino acids and proteins decreased in these plants. The levels of gibberellins and salicylic acid were greater in plants subjected to defoliation. The reestablishment of corn plants after defoliation occurred through the action of gibberellins and salicylic acid, which promoted the growth of aboveground biomass, maintenance of chlorophylls and gas exchange. The reallocation of amino acids and reducing sugars also contributes to the formation of new leaf primordia in defoliated plants. MenosDefoliation is a type of mechanical stress, and few studies have investigated this process in the early stages of maize development. Pest attacks, hail and machinery traffic have increased in recent decades, thus increasing this stress and potentially leading to losses. Furthermore, there are corn production systems in Brazil where early defoliation naturally occurs. Thus, the objective of this study was to determine the morphophysiological and biochemical changes in maize subjected to early defoliation and their effects on recovery from this stress. The experiment was performed in pots, and the plants were subjected to two treatments at the four fully expanded leaf stage: without defoliation (control) and with defoliation. Morphometric parameters, such as gas exchange, leaf pigment and biomolecule content, phytohormone con- tent, root morphology and leaf anatomy, were evaluated at seven and fourteen days after defoliation. Compared with the control plants, the defoliated corn plants were shorter in height, stem diameter, length, surface area, root diameter and volume, dry biomass and leaf anatomy. However, photosynthesis, chlorophyll content and nutrient content were similar in both treatments. After seven days of treatment, the amino acid content increased in the defoliated plants, and after fourteen days, the reducing sugars, amino acids and proteins decreased in these plants. The levels of gibberellins and salicylic acid were greater in plants subjected to defoliation. T... Mostrar Tudo |
Palavras-Chave: |
Anatomia foliar; Fitohormônio. |
Thesagro: |
Açúcar; Desfolha; Fotossíntese; Milho; Zea Mays. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1164068/1/How-does-early-defoliation-influence-the-morphophysiology.pdf
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Marc: |
LEADER 02716naa a2200313 a 4500 001 2164068 005 2024-05-10 008 2024 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s10725-024-01145-x$2DOI 100 1 $aFERREIRA, J. P. 245 $aHow does early defoliation influence the morphophysiology and biochemical characteristics of maize?$h[electronic resource] 260 $c2024 500 $aFirst online. 520 $aDefoliation is a type of mechanical stress, and few studies have investigated this process in the early stages of maize development. Pest attacks, hail and machinery traffic have increased in recent decades, thus increasing this stress and potentially leading to losses. Furthermore, there are corn production systems in Brazil where early defoliation naturally occurs. Thus, the objective of this study was to determine the morphophysiological and biochemical changes in maize subjected to early defoliation and their effects on recovery from this stress. The experiment was performed in pots, and the plants were subjected to two treatments at the four fully expanded leaf stage: without defoliation (control) and with defoliation. Morphometric parameters, such as gas exchange, leaf pigment and biomolecule content, phytohormone con- tent, root morphology and leaf anatomy, were evaluated at seven and fourteen days after defoliation. Compared with the control plants, the defoliated corn plants were shorter in height, stem diameter, length, surface area, root diameter and volume, dry biomass and leaf anatomy. However, photosynthesis, chlorophyll content and nutrient content were similar in both treatments. After seven days of treatment, the amino acid content increased in the defoliated plants, and after fourteen days, the reducing sugars, amino acids and proteins decreased in these plants. The levels of gibberellins and salicylic acid were greater in plants subjected to defoliation. The reestablishment of corn plants after defoliation occurred through the action of gibberellins and salicylic acid, which promoted the growth of aboveground biomass, maintenance of chlorophylls and gas exchange. The reallocation of amino acids and reducing sugars also contributes to the formation of new leaf primordia in defoliated plants. 650 $aAçúcar 650 $aDesfolha 650 $aFotossíntese 650 $aMilho 650 $aZea Mays 653 $aAnatomia foliar 653 $aFitohormônio 700 1 $aMARQUES, D. M. 700 1 $aKARAM, D. 700 1 $aBORGHI, E. 700 1 $aMAGALHAES, P. C. 700 1 $aSOUZA, K. R. D. de 700 1 $aARANTES, S. D. 700 1 $aSOUZA, T. C. de 773 $tPlant Growth Regulation, 2024.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
01/12/1999 |
Data da última atualização: |
06/06/2022 |
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
Autoria: |
NUNES, R. F. de M.; QUEIROZ, M. A. de; PEREIRA, F. M.; DAMIAO FILHO, C. F.; MALHEIROS, E. B. |
Afiliação: |
REGINA FERRO DE MELO NUNES, CPATSA; MANOEL ABÍLIO DE QUEIROZ, CPATSA; FERNAMDO MENDES PEREIRA; CARLOS FERREIRA DAMIÃO FILHO; EUCLIDES BRAGA MALHEIROS. |
Título: |
Utilizacao da embriogenese somatica no processo de melhoramento da tamareira. |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
In: QUEIROZ, M. A. de; GOEDERT, C. O.; RAMOS, S. R. R. (Ed.). Recursos genéticos e melhoramento de plantas para o Nordeste brasileiro. Petrolina: Embrapa Semi-Árido; Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 1999. |
Páginas: |
Np. |
ISBN: |
85-7405-001-6 |
Idioma: |
Português |
Conteúdo: |
A tamareira Phoenix dactilifera L. é uma palmeira do gênero Phoenix que produz frutos comestíveis que fazem parte de uma dieta básica de povos devários países do Oriente Médio (Bailey, 1944). Suas flores frescas são a base para uma bebida destilada (tora water). Uma goma medicional (kukm chil) é feita de seu palmito, sendo de comprovada eficácia em doenças do aparelho respiratório. |
Palavras-Chave: |
Date palm; Embryonic development; Phoenix dactilifera. |
Thesagro: |
Embriogénese; Melhoramento; Tâmara. |
Thesaurus NAL: |
plant breeding. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/107451/1/Regina.pdf
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Marc: |
LEADER 01356naa a2200277 a 4500 001 1133708 005 2022-06-06 008 1999 bl uuuu u00u1 u #d 020 $a85-7405-001-6 100 1 $aNUNES, R. F. de M. 245 $aUtilizacao da embriogenese somatica no processo de melhoramento da tamareira.$h[electronic resource] 260 $c1999 300 $aNp. 520 $aA tamareira Phoenix dactilifera L. é uma palmeira do gênero Phoenix que produz frutos comestíveis que fazem parte de uma dieta básica de povos devários países do Oriente Médio (Bailey, 1944). Suas flores frescas são a base para uma bebida destilada (tora water). Uma goma medicional (kukm chil) é feita de seu palmito, sendo de comprovada eficácia em doenças do aparelho respiratório. 650 $aplant breeding 650 $aEmbriogénese 650 $aMelhoramento 650 $aTâmara 653 $aDate palm 653 $aEmbryonic development 653 $aPhoenix dactilifera 700 1 $aQUEIROZ, M. A. de 700 1 $aPEREIRA, F. M. 700 1 $aDAMIAO FILHO, C. F. 700 1 $aMALHEIROS, E. B. 773 $tIn: QUEIROZ, M. A. de; GOEDERT, C. O.; RAMOS, S. R. R. (Ed.). Recursos genéticos e melhoramento de plantas para o Nordeste brasileiro. Petrolina: Embrapa Semi-Árido; Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 1999.
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