Annals of the Brazilian Congress of Plant Physiology and Ibero-latinamerican Congress of Plant Biology

EVALUATION OF GERMINATION DYNAMICS AND INITIAL GROWTH OF SEEDLINGS OF GUAPIRA OPPOSITA SEEDS

Published in 26/09/2022 - ISBN: 978-65-5941-830-5

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Paper Title
EVALUATION OF GERMINATION DYNAMICS AND INITIAL GROWTH OF SEEDLINGS OF GUAPIRA OPPOSITA SEEDS
Authors
  • Grace Francisca Panno dos Santos
  • Danielle da Silva
  • Rafael Krug Giacomini
  • Marivane Celmer Slodkowski
  • Paulo Tamaso Mioto
Modality
Abstract
Subject area
Plant Physiology
Publishing Date
26/09/2022
Country of Publishing
Brasil
Language of Publishing
en-US
Paper Page
https://www.even3.com.br/anais/cbfv2022_registration/516456-evaluation-of-germination-dynamics-and-initial-growth-of-seedlings-of-guapira-opposita-seeds
ISBN
978-65-5941-830-5
Keywords
Restinga forest, Native species, Nyctaginaceae
Summary
Guapira opposita (Vell.) Reitz (Nyctaginaceae), or maria-mole, is a native species with great importance in the restinga forest. It acts as a nucleating plant, facilitating the establishment of other species in its proximity, forming nuclei of vegetation. This work aimed to evaluate the germination dynamics of G. opposita seeds, through vigor and viability tests and initial growth of seedlings evaluation. The fruits were collected in the Natural Monument of Lagoa do Peri, Florianópolis/SC, packed in a plastic box and stored in a refrigerator at 8 ± 2 °C for 7 days. At the laboratory, the fruits pulp were removed and then, seeds were disinfected with 70% alcohol and with 2% sodium hypochlorite solution, followed by three washings in autoclaved distilled water. Subsequently, they were sown in gerbox® boxes with filter paper moistened with distilled water and incubated in a BOD-type germinator with a photoperiod of 12 hours at 25°C for 30 days. The percentage and speed of germination were evaluated. The Germination Speed Index (GVI) was calculated using the Maguire formula. The germination test had a completely randomized design with six replications of 25 seeds. After a period of 30 days, 10 random seedlings of each treatment were measured using a caliper. Germination started with the emergence of the radicle about 4 days after sowing. The seeds showed an average viability of 84 ± 14% of germination and their dynamics presented a high index, about 4.31 ± 0.89. The seedlings presented an average of 3.3 ± 1.3 cm, being 1.2 ± 0.12 cm shoots and 2.1 ± 0.64 cm roots. These data provide information on germination physiology of the species and allow us to develop new strategies to improve seeds quality and consequently seedlings production for restoration in degraded areas purpose.
Title of the Event
XVIII Brazilian Congress of Plant Physiology and I Ibero-latinoamerican Congress of Plant Biology
City of the Event
Porto Alegre
Title of the Proceedings of the event
Annals of the Brazilian Congress of Plant Physiology and Ibero-latinamerican Congress of Plant Biology
Name of the Publisher
Even3
Means of Dissemination
Meio Digital

How to cite

SANTOS, Grace Francisca Panno dos et al.. EVALUATION OF GERMINATION DYNAMICS AND INITIAL GROWTH OF SEEDLINGS OF GUAPIRA OPPOSITA SEEDS.. In: Annals of the Brazilian Congress of Plant Physiology and Ibero-latinamerican Congress of Plant Biology. Anais...Porto Alegre(RS) CEPUCRS, 2022. Available in: https//www.even3.com.br/anais/cbfv2022_registration/516456-EVALUATION-OF-GERMINATION-DYNAMICS-AND-INITIAL-GROWTH-OF-SEEDLINGS-OF-GUAPIRA-OPPOSITA-SEEDS. Access in: 03/04/2026

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