Germination performance of Syagrus romanzoffiana seeds subjected to water and salt stress

Authors

DOI:

https://doi.org/10.5433/1679-0359.2024v45n5p1563

Keywords:

Arecaceae, Abiotic stress, NaCl, PEG 6000, Osmotic potential, Stress tolerance.

Abstract

Queen palm (Syagrus romanzoffiana) reproduces through seeds, which typically germinate slowly and unevenly. These seeds face various abiotic stresses, including water and salt stress, which hinder water uptake and germination. This study aimed to assess the germination of queen palm seeds under water and salt stress conditions. We employed a completely randomized experimental design with four replications, using a factorial arrangement (2 × 5) involving two osmoconditioning agents (NaCl and PEG 6000) and five osmotic potentials (0.0 - control, -0.3, -0.6, -0.9, and -1.2 MPa). Key outcomes measured were germination percentage, germination speed index, and mean germination time. Results showed that NaCl significantly affected germination percentage, which decreased with lowering osmotic potential. Significant declines in seed germination were observed starting from -0.6 MPa. Both germination speed index and mean germination time were adversely affected by the osmotic potentials, regardless of the osmoconditioning agent used. Under water stress induced by PEG 6000, seeds germinated later and over an extended period compared to those under NaCl stress. The study concluded that queen palm seeds exhibit tolerance to both water and salt stress, managing to germinate even at the lowest tested osmotic potential (-1.2 MPa).

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Author Biographies

Antonio Maricélio Borges de Souza, Universidade Federal de Viçosa

Doctoral Student of the Postgraduate Program in Crop Production, Universidade Federal de Viçosa, UFV, Viçosa, SP, Brazil.

Thiago Souza Campos, Universidade Estadual de Paulista

Doctoral Student of the Postgraduate Program in Agronomy (Plant Production) Universidade Estadual de Paulista, UNESP, Jaboticabal, SP, Brazil.

Guilherme Rodrigues Vieira, Universidade Estadual de Paulista

Master's Student of the Postgraduate Program in Agronomy (Plant Production) UNESP, Jaboticabal, SP, Brazil.

Mariana Martins da Silveira, Universidade Estadual de Paulista

Undergraduate Students in Agronomy, UNESP, Jaboticabal, SP, Brazil.

André Caturelli Braga, Universidade Estadual de Paulista

Undergraduate Students in Agronomy, UNESP, Jaboticabal, SP, Brazil.

Murilo Paes Patricio, Universidade Estadual de Paulista

Undergraduate Student in Agronomy, UNESP, Jaboticabal, SP, Brazil.

Renata Bachin Mazzini-Guedes, Universidade Federal do Paraná

Profa. Dra. of of the Undergraduate Course in Agronomy, Universidade Federal do Paraná, UFPR, Jandaia do Sul, PR, Brazil.

Marcos Vieira Ferraz, Faculdade de Tecnologia de São José do Rio Preto

Prof. Dr. of the Undergraduate Course in Agribusiness, Faculdade de Tecnologia de São José do Rio Preto, FATEC, São José do Rio Preto, SP, Brazil.

Kathia Fernandes Lopes Pivetta, Universidade Estadual de Paulista

Profa. .Dra. of the Undergraduate Course in Agronomy and Postgraduate Program in Agronomy (Plant Production), UNESP, Jaboticabal, SP, Brazil.

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2024-09-19

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Souza, A. M. B. de, Campos, T. S., Vieira, G. R., Silveira, M. M. da, Braga, A. C., Patricio, M. P., … Pivetta, K. F. L. (2024). Germination performance of Syagrus romanzoffiana seeds subjected to water and salt stress. Semina: Ciências Agrárias, 45(5), 1563–1578. https://doi.org/10.5433/1679-0359.2024v45n5p1563

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Vol. 45 No. 5 (2024)

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Copyright (c) 2024 Antonio Maricélio Borges de Souza, Thiago Souza Campos, Guilherme Rodrigues Vieira, Mariana Martins da Silveira, André Caturelli Braga, Murilo Paes Patricio, Renata Bachin Mazzini-Guedes, Marcos Vieira Ferraz, Kathia Fernandes Lopes Pivetta

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