Data/hora: 04/06/2024 10:06:57

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 14/08/2018
Data da última atualização: | 14/08/2018
Autoria: | GUIMARÃES, C. M.; STONE, L. F.; CARVALHO, M. da C. S.; COLOMBARI FILHO, J. M.
Afiliação: | CLEBER MORAIS GUIMARAES, CNPAF; LUIS FERNANDO STONE, CNPAF; MARIA DA CONCEICAO SANTANA CARVALHO, CNPAF; JOSE MANOEL COLOMBARI FILHO, CNPAF.
Título: | Performance of low phosphorus tolerant rice genotypes under drought stress.
Ano de publicação: | 2018
Fonte/Imprenta: | Revista Ceres, v. 65, n. 3, p. 253-260, maio/jun. 2018.
DOI: | 10.1590/0034-737X201865030005
Idioma: | Inglês
Conteúdo: | The identification of genotypes more tolerant to water deficit and more efficient in the use of nutrients little available in the soil is an important low-cost strategy to promote sustainable agriculture in marginalized regions. In this sense, a study was carried out in the SITIS Phenotyping Platform of the Embrapa Arroz e Feijão, with the objective of evaluating the drought tolerance of upland rice genotypes tolerant to phosphorus (P) deficiency. The experimental design was performed in a randomized complete block with split-split plots and two replications. In the plots were established two water regimes (with and without water deficit), in the subplots two soil phosphorus contents (25 and 200 mg dm-3) and in sub-subplots 48 upland rice genotypes. The water deficit had more impact on grain yield than the phosphorus supply. The genotypes AB 062037, AB 062041, AB 062138, Arroz Mato Grosso, BRA 02601, BRA 052045, CNA 4098, CNA 6187, Guapa, Guaporé and Rio Paranaíba were classified in the most productive group under both water regimes. The most productive genotypes under water deficit showed higher root density in the deeper soil layers. The most productive genotypes in the two water regimes were also those that showed the highest transpiration.
Thesagro: | Arroz; Deficiência Hídrica; Evapotranspiração; Fósforo; Genótipo; Oryza Sativa; Sistema Radicular; Stress.
Thesaurus Nal: | Abiotic stress; Evapotranspiration; Phosphorus; Rice; Root systems.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/181425/1/CNPAF-2018-rc.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (35232-1) - UPC - AP - DD - 2018 -  - 2018 - DIS