Data/hora: 02/06/2024 15:53:20

Provedor de dados: | 196
País: | Brazil
Título: | PHOTOSYNTHETIC EFFICIENCY OF TOMATO PLANTS SUBMITTED TO CALCIUM SILICATE APPLICATION
Autores: | Coutinho, Pablo Wenderson Ribeiro; Echer, Márcia de Moraes; Guimarães, Vandeir Francisco; Lana, Maria do Carmo; Inagaki, Adriano Mitio; Brito, Tauane Santos; Alves, Thatiane Nepomuceno.
Data: | 2020-11-30
Ano: | 2020
Resumo: | The objective was to evaluate the effect of calcium silicate on the chlorophyll content and gas exchange of two tomato hybrids. The design used was in randomized blocks in a 2x5 factorial scheme, with four replications. The first factor was composed of two tomato hybrids: Ivety and Natália, and the second factor was composed of five doses of calcium silicate (0, 150, 300, 450, and 600 kg ha-1), applied to the substrate before planting the seedlings. Gas exchange: net CO2 assimilation rate (A), leaf transpiration rate (E), stomatal conductance (gs), internal CO2 concentration (Ci), water-use efficiency (WUE), intrinsic efficiency water use (iWUE), and instant carboxylation efficiency (ACi); SPAD index and the levels of chlorophylls a, b, and total were evaluated. The analyzes were performed in the stages of first flowering (17 days after transplanting - DAT), full flowering (58 DAT), and full fruiting (78 DAT). At 17 DAT, no difference was observed for gas exchange variables and photosynthetic pigments. The application of calcium silicate reduced gas exchange and photosynthetic pigments at 58 DAT. The hybrid Natália had the highest A, WUE, iWUE, and ACi at 78 DAT. However, the hybrid Ivety in the same growth stage, in full fruiting, was superior only for the internal concentration of CO2 and SPAD index, with no difference for photosynthetic pigments.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicosonline.uems.br/index.php/agrineo/article/view/4495

10.32404/rean.v7i4.4495

Editor: | Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Cassilândia
Relação: | http://periodicosonline.uems.br/index.php/agrineo/article/view/4495/3794
Formato: | application/pdf

Fonte:

Revista de Agricultura Neotropical; v. 7 n. 4 (2020): Revista de Agricultura Neotropical; 49-58

REVISTA DE AGRICULTURA NEOTROPICAL; Vol. 7 No. 4 (2020): REVISTA DE AGRICULTURA NEOTROPICAL; 49-58

2358-6303

10.32404/rean.v7i4

Fonte: | Copyright (c) 2020 REVISTA DE AGRICULTURA NEOTROPICAL