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Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
10/09/2013 |
Data da última atualização: |
06/08/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SOUZA, T. C. de; CASTRO, E. M. de; MAGALHAES, P. C.; LINO, L. de O.; ALVES, E. T.; ALBUQUERQUE, P. E. P. de. |
Afiliação: |
PAULO CESAR MAGALHAES, CNPMS; PAULO EMILIO PEREIRA DE ALBUQUERQUE, CNPMS. |
Título: |
Morphophysiology, morphoanatomy, and grain yield under field conditions for two maize hybrids with contrasting response to drought stress. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Acta Physiologiae Plantarum, v. 35, p. 3201-3211, 2013. |
DOI: |
10.1007/s11738-013-1355-1 |
Idioma: |
Inglês |
Conteúdo: |
In the northern region of the state of Minas Gerais, lack of rainfall limits crop production in the field, which is possible only with irrigation. Agricultural and physiological practices have been intensively searched to overcome drought effects and consequently increase production. In this context, the objective of this study was to characterize morphophysiological and morphoanatomical changes and evaluate the attributes of grain yield under field conditions in two hybrids contrasting for drought tolerance. The experiment was carried out for 2 years (2010 and 2011) and the water deficit was imposed by stopping irrigation for 22 days at the pre-flowering stage. At the end of the stress treatment, leaf and root anatomy and morphophysiological characteristics (leaf water potential, chlorophyll content, percentage of dry leaves, leaf area, stomatal conductance, chlorophyll fluorescence, and anthesis-silking interval) were evaluated. For a better interpretation of tolerance of the hybrids in the evaluated characteristics, an index was used stress index. Hybrid DKB 390 (tolerant) surpassed hybrid BRS 1030 (sensitive) in grain yield. Furthermore, it presented lower percentage of dry leaves, higher flowering synchronization, higher stomatal conductance, and higher Fv/Fm relationship. In the root, DKB 390 showed higher amount of aerenchyma in the cortex, an increase of exodermis width, and numerous metaxylem with smaller diameter. In the leaf, it presented higher number of stomata and smaller distance between the vascular bundles in the leaf blade. The study concluded that significant morphophysiological and morphoanatomical changes, which are related to drought tolerance, occurred in DKB 390, leading to a higher yield in the field. MenosIn the northern region of the state of Minas Gerais, lack of rainfall limits crop production in the field, which is possible only with irrigation. Agricultural and physiological practices have been intensively searched to overcome drought effects and consequently increase production. In this context, the objective of this study was to characterize morphophysiological and morphoanatomical changes and evaluate the attributes of grain yield under field conditions in two hybrids contrasting for drought tolerance. The experiment was carried out for 2 years (2010 and 2011) and the water deficit was imposed by stopping irrigation for 22 days at the pre-flowering stage. At the end of the stress treatment, leaf and root anatomy and morphophysiological characteristics (leaf water potential, chlorophyll content, percentage of dry leaves, leaf area, stomatal conductance, chlorophyll fluorescence, and anthesis-silking interval) were evaluated. For a better interpretation of tolerance of the hybrids in the evaluated characteristics, an index was used stress index. Hybrid DKB 390 (tolerant) surpassed hybrid BRS 1030 (sensitive) in grain yield. Furthermore, it presented lower percentage of dry leaves, higher flowering synchronization, higher stomatal conductance, and higher Fv/Fm relationship. In the root, DKB 390 showed higher amount of aerenchyma in the cortex, an increase of exodermis width, and numerous metaxylem with smaller diameter. In the leaf, it presented higher number of stomata ... Mostrar Tudo |
Palavras-Chave: |
Estresse hídrico; Índice de colheita. |
Thesagro: |
Milho; Zea mays. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02528naa a2200241 a 4500 001 1965966 005 2021-08-06 008 2013 bl uuuu u00u1 u #d 024 7 $a10.1007/s11738-013-1355-1$2DOI 100 1 $aSOUZA, T. C. de 245 $aMorphophysiology, morphoanatomy, and grain yield under field conditions for two maize hybrids with contrasting response to drought stress.$h[electronic resource] 260 $c2013 520 $aIn the northern region of the state of Minas Gerais, lack of rainfall limits crop production in the field, which is possible only with irrigation. Agricultural and physiological practices have been intensively searched to overcome drought effects and consequently increase production. In this context, the objective of this study was to characterize morphophysiological and morphoanatomical changes and evaluate the attributes of grain yield under field conditions in two hybrids contrasting for drought tolerance. The experiment was carried out for 2 years (2010 and 2011) and the water deficit was imposed by stopping irrigation for 22 days at the pre-flowering stage. At the end of the stress treatment, leaf and root anatomy and morphophysiological characteristics (leaf water potential, chlorophyll content, percentage of dry leaves, leaf area, stomatal conductance, chlorophyll fluorescence, and anthesis-silking interval) were evaluated. For a better interpretation of tolerance of the hybrids in the evaluated characteristics, an index was used stress index. Hybrid DKB 390 (tolerant) surpassed hybrid BRS 1030 (sensitive) in grain yield. Furthermore, it presented lower percentage of dry leaves, higher flowering synchronization, higher stomatal conductance, and higher Fv/Fm relationship. In the root, DKB 390 showed higher amount of aerenchyma in the cortex, an increase of exodermis width, and numerous metaxylem with smaller diameter. In the leaf, it presented higher number of stomata and smaller distance between the vascular bundles in the leaf blade. The study concluded that significant morphophysiological and morphoanatomical changes, which are related to drought tolerance, occurred in DKB 390, leading to a higher yield in the field. 650 $aMilho 650 $aZea mays 653 $aEstresse hídrico 653 $aÍndice de colheita 700 1 $aCASTRO, E. M. de 700 1 $aMAGALHAES, P. C. 700 1 $aLINO, L. de O. 700 1 $aALVES, E. T. 700 1 $aALBUQUERQUE, P. E. P. de 773 $tActa Physiologiae Plantarum$gv. 35, p. 3201-3211, 2013.
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4. | | TULLIO, L. D.; PAULITSCH, F.; REICHERT, P. R. S.; KLEPA, M. S.; KLEPA, M. S.; PILEGGI, M.; GOMES, D. F.; HUNGRIA, M.; BATISTA, J. S. S. Proteomic analysis of Rhizobium freirei PRF 81 responses to low pH. In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 28.; SIMPÓSIO DE FERMENTAÇÃO ALCOÓLICA, 3.; SIMPÓSIO DE MICRORGANISMOS FOTOSSINTETIZANTES, 3.; SIMPÓSIO DE ESCHERICHIA COLI LUIZ RACHID TRABULSI, 4., 2015, Florianópolis. Anais... [São Paulo]: Sociedade Brasileira de Microbiologia, 2015. Res. 1407-2.Tipo: Resumo em Anais de Congresso |
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12. | | PROTACHEVICZ, A. P.; PAULITSCH, F.; KLEPA, M. S.; HAINOSZ, J.; OLCHANHESKI, L. R.; HUNGRIA, M.; BATISTA, J. S. da S. Pioneering Desmodium spp. are nodulated by natural populations of stress‑tolerant alpha‑ and beta‑rhizobia. Brazilian Journal of Microbiology, v. 54, p. 3127–3135, 2023.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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