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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Unidades Centrais. |
Data corrente: |
05/12/2012 |
Data da última atualização: |
16/09/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ALVAREZ, R. de C. F.; CRUSCIOL, C. A. C.; NASCENTE, A. S.; RODRIGUES, J. D.; HABERMANN, G. |
Afiliação: |
RITA DE CÁSSIA FÉLIX ALVAREZ, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; CARLOS ALEXANDRE COSTA CRUSCIOL, UNESP, Botucatu-SP; ADRIANO STEPHAN NASCENTE, CNPAF; JOÃO DOMINGOS RODRIGUES, UNESP, Botucatu-SP; GUSTAVO HABERMANN, UNESP, Rio Claro-SP. |
Título: |
Gas exchange rates, plant height, yield components, and productivity of upland rice as affected by plant regulators. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, v. 47, n. 10, p. 1455-1461, out. 2012. |
Idioma: |
Inglês |
Conteúdo: |
The objective of this work was to evaluate gas exchange rates, plant height, yield components, and productivity of upland rice, as affected by type and application time of plant growth regulators. A randomized block design, in a 4x2 factorial arrangement, with four replicates was used. Treatments consisted of three growth regulators (mepiquat chloride, trinexapac.ethyl, and paclobutrazol), besides a control treatment applied at two different phenological stages: early tillering or panicle primordial differentiation. The experiment was performed under sprinkler.irrigated field conditions. Net CO2 assimilation, stomatal conductance, plant transpiration, and water.use efficiency were measured four times in Primavera upland rice cultivar, between booting and milky grain phenophases. Gas exchange rates were neither influenced by growth regulators nor by application time. There was, however, interaction between these factors on the other variables. Application of trinexapac.ethyl at both tillering and differentiation stages reduced plant height and negatively affected yield components and rice productivity. However, paclobutrazol and mepiquat chloride applied at tillering, reduced plant height without affecting rice yield. Mepiquat chloride acted as a growth stimulator when applied at the differentiation stage, and significantly increased plant height, panicle number, and grain yield of upland rice. |
Palavras-Chave: |
Condutância estomática; Eficiência de uso da água; Estatura da planta; Net photosynthesis; Water?use efficiency. |
Thesagro: |
Arroz; Estatura de planta; Fotossíntese; Gas; Oryza Sativa; Transpiração vegetal. |
Thesaurus Nal: |
Stomatal conductance; Transpiration. |
Categoria do assunto: |
-- F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/71475/1/gas.pdf
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Marc: |
LEADER 02400naa a2200325 a 4500 001 1941332 005 2022-09-16 008 2012 bl uuuu u00u1 u #d 100 1 $aALVAREZ, R. de C. F. 245 $aGas exchange rates, plant height, yield components, and productivity of upland rice as affected by plant regulators. 260 $c2012 520 $aThe objective of this work was to evaluate gas exchange rates, plant height, yield components, and productivity of upland rice, as affected by type and application time of plant growth regulators. A randomized block design, in a 4x2 factorial arrangement, with four replicates was used. Treatments consisted of three growth regulators (mepiquat chloride, trinexapac.ethyl, and paclobutrazol), besides a control treatment applied at two different phenological stages: early tillering or panicle primordial differentiation. The experiment was performed under sprinkler.irrigated field conditions. Net CO2 assimilation, stomatal conductance, plant transpiration, and water.use efficiency were measured four times in Primavera upland rice cultivar, between booting and milky grain phenophases. Gas exchange rates were neither influenced by growth regulators nor by application time. There was, however, interaction between these factors on the other variables. Application of trinexapac.ethyl at both tillering and differentiation stages reduced plant height and negatively affected yield components and rice productivity. However, paclobutrazol and mepiquat chloride applied at tillering, reduced plant height without affecting rice yield. Mepiquat chloride acted as a growth stimulator when applied at the differentiation stage, and significantly increased plant height, panicle number, and grain yield of upland rice. 650 $aStomatal conductance 650 $aTranspiration 650 $aArroz 650 $aEstatura de planta 650 $aFotossíntese 650 $aGas 650 $aOryza Sativa 650 $aTranspiração vegetal 653 $aCondutância estomática 653 $aEficiência de uso da água 653 $aEstatura da planta 653 $aNet photosynthesis 653 $aWater?use efficiency 700 1 $aCRUSCIOL, C. A. C. 700 1 $aNASCENTE, A. S. 700 1 $aRODRIGUES, J. D. 700 1 $aHABERMANN, G. 773 $tPesquisa Agropecuária Brasileira$gv. 47, n. 10, p. 1455-1461, out. 2012.
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Embrapa Arroz e Feijão (CNPAF) |
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1. | | ALVAREZ, R. de C. F.; CRUSCIOL, C. A. C.; NASCENTE, A. S.; RODRIGUES, J. D.; HABERMANN, G. Gas exchange rates, plant height, yield components, and productivity of upland rice as affected by plant regulators. Pesquisa Agropecuária Brasileira, v. 47, n. 10, p. 1455-1461, out. 2012.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Arroz e Feijão; Embrapa Unidades Centrais. |
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