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- Title
Efeito da salinidade na germinação e desenvolvimento de plântulas de Ochroma pyramidale.
- Authors
da Silva da CRUZ, Viviane; Oscar Mitsuo YAMASHITA; Vera KARSBURG, Isane; de CARVALHO, Marco Antonio Camillo; DALLACORT, Rivanildo; Bandini ROSSI, Ana Aparecida; da SILVA, Ivone Vieira
- Abstract
In the present study, the effect of salinity on seed germination and post-seminal development of Ochroma pyramidale was evaluated through three osmotic agents (NaCl, CaCl2 and KCl) in two experiments. In the first experiment, salt stress in germination was evaluated in a factorial scheme 3 x 6, using NaCl, CaCl2 and KCl; and six osmotic potentials (0.0, -0.1, -0.2, -0.4, -0.6 and -0.8 MPa). In the second experiment, the initial development of plants, using the same osmotic agents, was studied in four osmotic potentials (0.0; -0.1; -0.2 and -0.3 MPa), in a completely randomized design 3 x 4 factorial scheme. The effect of salinity interfered on the germination of O. pyramidale seeds, with reduction as the potentials became more negative for the production of dry seedling mass, percentage of germination and germination speed. In the osmotic potential of -0.8 MPa, total inhibition occurred, evidencing that CaCl2 had a stronger inhibitory effect than NaCl, followed by KCl. In the development of plants, NaCl caused greater sensitivity when compared to CaCl2 in the highest osmotic potentials.
- Publication
Nativa, 2020, Vol 8, Issue 2, p239
- ISSN
2318-7670
- Publication type
Article
- DOI
10.31413/nativa.v8i2.8266