| Registro completo |
| Provedor de dados: |
196
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| País: |
Brazil
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| Título: |
PHOTOSYNTHETIC EFFICIENCY OF TOMATO PLANTS SUBMITTED TO CALCIUM SILICATE APPLICATION
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| 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
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| Data: |
2020-11-30
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| Ano: |
2020
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| 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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://periodicosonline.uems.br/index.php/agrineo/article/view/4495
10.32404/rean.v7i4.4495
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| Editor: |
Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Cassilândia
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| Relação: |
http://periodicosonline.uems.br/index.php/agrineo/article/view/4495/3794
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| Formato: |
application/pdf
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| 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
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| Direitos: |
Copyright (c) 2020 REVISTA DE AGRICULTURA NEOTROPICAL
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