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Registro Completo |
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Biblioteca(s): |
Embrapa Soja; Embrapa Tabuleiros Costeiros. |
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Data corrente: |
28/07/2025 |
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Data da última atualização: |
28/07/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, O. B. da; CASTRO, E. M. de; PEREIRA, M. P.; BORGES, I. A.; CANDIDO, E. L.; CARVALHO, C. G. P.; CARVALHO, L. M. de. |
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Afiliação: |
ORIVALDO BENEDITO DA SILVA, UNIVERSIDADE FEDERAL DE LAVRAS; EVARISTO MAURO DE CASTRO, UNIVERSIDADE FEDERAL DE LAVRAS; MARCIO PAULO PEREIRA, UNIVERSIDAE FEDERAL DE LAVRAS; ISABELLA ANDRADE BORGES, UNIVERSIDADE FEDERAL DE LAVRAS; EDILSON LUIZ CANDIDO, UNIVERSIDADE FEDERAL DE LAVRAS; CLAUDIO GUILHERME PORTELA DE CARVALHO, CNPSO; LUCIANA MARQUES DE CARVALHO, CPATC. |
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Título: |
Leaf morphoanatomical and physiological characteristics of sunflower genotypes under water deficit. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
South African Journal of Botany, n. 178, p. 244-256, 2025. |
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DOI: |
https://doi.org/10.1016/j.sajb.2025.01.018 |
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Idioma: |
Inglês |
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Conteúdo: |
Sunflower (Helianthus annuus L., Asteraceae) is a drought-tolerant crop whose yield is compromised when there is water scarcity during the flowering period. The objective of the present study was to evaluate, under controlled conditions, the morphoanatomical and physiological aspects of four sunflower genotypes grown under water deficit conditions. The experiment was conducted using a completely randomized design in a 2£4 factorial scheme (two water conditions and four genotypes), with six replicates of one plant per rhizotron pot, totalling 48 plants. The water conditions evaluated included plants under well-watered conditions (field capacity) and plants under water deficit conditions (40 % field capacity). The studied sunflower genotypes included OLISUN03, AGUARA06, BRS323, and HELIO250. Water deficit induced developmental delay, reduced shoot and root dry mass, and changed stomatal morphology and density, which were reflected by reduced stomatal conductance, transpiration, and internal CO2 concentrations. Changes in the areas of intercellular spaces and substomatal chambers, increased collenchyma area and proline leaf content were also observed. It was concluded that the four sunflower genotypes had reduced growth under water deficit, in addition to morphoanatomical changes. |
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Palavras-Chave: |
Sunflower. |
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Thesagro: |
Disponibilidade de Água; Girassol; Morfologia Vegetal. |
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Thesaurus Nal: |
Gas exchange; Soil water deficit. |
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Categoria do assunto: |
--
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02155naa a2200277 a 4500
001 2177517
005 2025-07-28
008 2025 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.sajb.2025.01.018$2DOI
100 1 $aSILVA, O. B. da
245 $aLeaf morphoanatomical and physiological characteristics of sunflower genotypes under water deficit.$h[electronic resource]
260 $c2025
520 $aSunflower (Helianthus annuus L., Asteraceae) is a drought-tolerant crop whose yield is compromised when there is water scarcity during the flowering period. The objective of the present study was to evaluate, under controlled conditions, the morphoanatomical and physiological aspects of four sunflower genotypes grown under water deficit conditions. The experiment was conducted using a completely randomized design in a 2£4 factorial scheme (two water conditions and four genotypes), with six replicates of one plant per rhizotron pot, totalling 48 plants. The water conditions evaluated included plants under well-watered conditions (field capacity) and plants under water deficit conditions (40 % field capacity). The studied sunflower genotypes included OLISUN03, AGUARA06, BRS323, and HELIO250. Water deficit induced developmental delay, reduced shoot and root dry mass, and changed stomatal morphology and density, which were reflected by reduced stomatal conductance, transpiration, and internal CO2 concentrations. Changes in the areas of intercellular spaces and substomatal chambers, increased collenchyma area and proline leaf content were also observed. It was concluded that the four sunflower genotypes had reduced growth under water deficit, in addition to morphoanatomical changes.
650 $aGas exchange
650 $aSoil water deficit
650 $aDisponibilidade de Água
650 $aGirassol
650 $aMorfologia Vegetal
653 $aSunflower
700 1 $aCASTRO, E. M. de
700 1 $aPEREIRA, M. P.
700 1 $aBORGES, I. A.
700 1 $aCANDIDO, E. L.
700 1 $aCARVALHO, C. G. P.
700 1 $aCARVALHO, L. M. de
773 $tSouth African Journal of Botany$gn. 178, p. 244-256, 2025.
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Registro original: |
Embrapa Tabuleiros Costeiros (CPATC) |
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