Data/hora: 02/06/2024 02:33:13

Biblioteca(s): | Embrapa Semiárido.
Data corrente: | 18/01/2017
Data da última atualização: | 26/01/2017
Autoria: | SOUZA, M. A. de; MESQUITA, A. C.; SIMOES, W. L.; FERREITA, K. M.; ARAÚJO, E. F. J.
Afiliação: | MOISÉS ALVES DE SOUZA; ALESSANDRO CARLOS MÉSQUITA, Universidade do Estado da Bahia, Departamento de Tecnologia e Ciências Sociais, Juazeiro, BA; WELSON LIMA SIMOES, CPATSA; KALLINE MENDES FERREIRA, Universidade do Estado da Bahia, Departamento de Tecnologia e Ciências Sociais, Juazeiro, BA; EMANOEL FERNADO JUREMA ARAUJO.
Título: | Physiological and biochemical characterization of mango tree with paclobutrazol application via irrigation.
Ano de publicação: | 2016
Fonte/Imprenta: | Pesquisa Agropecuária Tropical, Goiânia, v. 46, n. 4, p. 442-449, oct./dec. 2016.
ISSN: | 1983-4063
DOI: | 10.1590/1983-40632016v4642829
Idioma: | Inglês
Conteúdo: | Paclobutrazol application in mango tree floral induction is followed by changes in the hormonal balance and carbohydrates production. This study aimed at evaluating the physiological and biochemical variables of mango tree (Palmer cultivar) by applying paclobutrazol doses via irrigation. The experimental design was randomized blocks, with five paclobutrazol doses (0.7 g, 1.0 g, 1.3 g, 1.6 g and 1.9 g of a.i. per linear meter of canopy) and one additional treatment, with one dose in the conventional form of application (1.9 g of a.i. per linear meter of canopy), and four replicates. The variables analyzed were: photosynthesis rate; stomatal conductance; transpiration; leaf temperature; CO2 ratio; total protein content; reducing, nonreducing and total soluble sugars in leaf tissue and fruit; and nitrate reductase enzyme. The lowest values for photosynthesis rate and stomatal conductance were obtained with paclobutrazol applied via irrigation. The highest values for gas exchange were obtained with the lowest paclobutrazol doses applied via irrigation, showing that this kind of application is efficient and that it is possible to reduce the application dose via irrigation system. The highest carbohydrate contents in the leaf tissue were observed for the doses of 1.06 g and 1.09 g of a.i. per linear meter of canopy, applied via irrigation. The carbohydrate contents in fruits decreased in response to the paclobutrazol dose. The application methods and doses applied via irrigation did not influence the nitrate reductase activity.
Palavras-Chave: | Enzima redutase; Floral induction; Indução floral; Mango; Reductase enzyme.
Thesagro: | Irrigação; Manga; Mangifera Indica; Regulador de crescimento.
Thesaurus Nal: | Paclobutrazol.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/153492/1/Welson-1.pdf
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (56298-1) - UPC - AP - DD -  -  -  - DIS