Nitrogen components, growth and gas exchange in spring wheat plants grown under interaction of silicon (Si) and nitrogen (N)

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorda Silva, Edson Santos-
Autor(es): dc.creatorPrado, Renato de Mello-
Autor(es): dc.creatordos Santos, Durvalina Maria Mathias-
Autor(es): dc.creatorCruz, Flávio José Rodrigues-
Autor(es): dc.creatorde Almeida, Hilário Júnior-
Autor(es): dc.creatorCampos, Cid Naudi Silva-
Data de aceite: dc.date.accessioned2025-08-21T20:43:27Z-
Data de disponibilização: dc.date.available2025-08-21T20:43:27Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2015-01-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/232461-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/232461-
Descrição: dc.descriptionSome studies have reported a synergistic effect between N and Si in plant growth. The effect of interaction between Si and N on the nitrogen metabolism, growth and gas exchange in spring wheat plants genotype IAC 375 was therefore investigated in the present study. Two Si doses (0 and 1.8 mmol L-1) and five N doses (1.4, 3.6, 7.1, 14.3 and 28.6 mmol L-1) were used. The concentrations of leaf (R2=0.66*) and root silicon (R2=0.24*) were influenced by the dose of 1.8 mmol L-1 of Si while unaffected by N doses. On the other hand, N doses were more decisive than Si in nitrate reductase activity, and leaf and root nitrogen content. The stomatal conductance (R2=0.91**), transpiration (R2=0.93**) and intercellular CO2 concentration (R2=0.98**) were lower in the dose of 1.8 mmol L-1 of Si, however, net photosynthesis (R2=0.98*) was higher in this Si dose. The instantaneous (R2=0.71**) and intrinsic water use efficiencies (R2=0.52**) were higher in the presence of 1.8 mmol L-1 of Si, but decreased with increasing N levels. Leaf area, shoot dry mass and root dry mass of plants grown in the presence or absence of Si were influenced by N and not by Si. Silicon was effective in improving water ratios in wheat plants, however the interaction between Si and N was not was sufficiently effective to increase N uptake and promote dry matter gains in wheat plants.-
Descrição: dc.descriptionUniversidade Estadual Paulista, Campus Jaboticabal, via de acesso Prof. Paulo Donato Castellane s/n-
Descrição: dc.descriptionUniversidade Estadual Paulista, Campus Jaboticabal, via de acesso Prof. Paulo Donato Castellane s/n-
Formato: dc.format790-798-
Idioma: dc.languageen-
Relação: dc.relationAustralian Journal of Crop Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDry mass-
Palavras-chave: dc.subjectStomatal conductance-
Palavras-chave: dc.subjectTranspiration-
Palavras-chave: dc.subjectTriticum aestivum L-
Palavras-chave: dc.subjectWater use efficiency-
Título: dc.titleNitrogen components, growth and gas exchange in spring wheat plants grown under interaction of silicon (Si) and nitrogen (N)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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