Pre-germination treatments of Paricá (Schizolobium amazonicum) seeds

  • Estefânia Martins Bardiviesso Departamento de Horticultura, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista "Júlio de Mesquita Filho"
  • Thiago Barbosa Batista Department of Crop science, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista "Júlio de Mesquita Filho"
  • Flávio Ferreira da Silva Binotti Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Cassilândia
  • Edilson Costa Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Cassilândia
  • Tiago Alexandre da Silva Department of Crop science, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista "Júlio de Mesquita Filho"
  • Natália de Brito Lima Lanna Departamento de Horticultura, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista "Júlio de Mesquita Filho"
Keywords: Gibberellin, Cytokinin, Pre-soaking, Mechanical scarification

Abstract

Paricá seeds have dormancy and, even after mechanical scarification, these seeds show slow and uneven germination. Pre-germination treatments can be used to increase seed germination performance. Thus, the aimed to evaluate the physiological potential and initial growth of paricá seeds after pre-germination treatments, using different substances as plant regulators and nutrients, in addition to mechanical scarification. The experimental design was completely randomized, in a 2x7 factorial scheme, consisting of the following pre-germination treatments: mechanical scarification (10% and 50% of the seed coat) and seed pre-soaking [control-water, KNO3 ­0.2%, Ca(NO3)2 0.2%, gibberellin 0.02%, cytokinin 0.02%, and mixture of gibberellin + cytokinin (1:1)] besides a control group without pre-soaking, with four replicates. The study evaluated germination and emergence rates, germination and emergence speed indices, collar diameter, plant height, seedling dry mass, hypocotyl and seedling length, and electrical conductivity. It was observed that pre-soaking the seeds in gibberellin after mechanical scarification at 50% as a pre-germination treatment resulted in seeds with higher vigor expression and greater initial seedling growth.

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Published
2020-03-16
How to Cite
Bardiviesso, E. M., Batista, T. B., Binotti, F. F. da S., Costa, E., Silva, T. A. da, & Lanna, N. de B. L. (2020). Pre-germination treatments of Paricá (Schizolobium amazonicum) seeds. Bioscience Journal, 36(4). https://doi.org/10.14393/BJ-v36n4a2020-41791
Section
Agricultural Sciences