Breaking seed dormancy in Sesbania punicea (Cav.) Benth

Autores

DOI:

https://doi.org/10.18188/sap.v20i4.27330
Agências de fomento

Resumo

Sesbania punicea is a native plant of Brazil, has ornamental features inflorescences arranged in bunches of orange coloring. Its main form of propagation is through seeds, but these present integumentary dormancies, for which there is still no method of overcoming established. The objective of this study was to evaluate methods of breaking dormancy in S. punicea seeds for seedling production. The treatments used were control - no treatment, hand scarification with sandpaper grade 80 for 40 sec.; hand scarification with sandpaper grade 80 for 60 sec.; thermal treatment by soaking in water from 80ºC to room temperature and chemical treatment - stirring in 0.5 L solution of 12% sodium hypochlorite (NaClO), 3 mL of hydrochloric acid (HCl) and 20 g of commercial sodium hydroxide (NaOH) dissolved in 1 L of water, for 45 min.).After the treatments, the seeds were wrapped in rolls of autoclaved germitest paper and moistened with distilled water 2.5 times the weight of the sheet. Then, the rolls were placed in plastic bags, stored in the upright position, and incubated at 25ºC, in a 16 h photoperiod, for 14 days. A completely randomized design with four replications of 25 seeds was used. The germination percentage, average germination time, germination speed index, percentage of normal seedling formation, shoot length, root system length and percentage of hard seeds were evaluated. There was a difference for all the analyzes evaluated, except for the length of the aerial part. The dormancy breaking method through mechanical scarification using sandpaper for 60 sec., enables the propagation and formation of S. punicea seedlings.

Biografia do Autor

Gislaine Taís Grzeça, Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul

Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Bento Gonçalves, RS.

Mara Cíntia Winhelmann, Universidade Federal do Rio Grande do Sul, Departamento de Horticultura e Silvicultura, Faculdade de Agronomia

Programa de Pós-graduação em Fitotecnia, Departamento de Horticultura e Silvicultura

Aquélis Armiliato Emer, Universidade Federal do Rio Grande do Sul - UFRGS

Doutora em Fitotecnia pela Universidade Federal do Rio Grande do Sul, Porto Alegre, RS.

Marília Tedesco, Universidade Federal do Rio Grande do Sul - UFRGS

Doutora em Fitotecnia pela Universidade Federal do Rio Grande do Sul, Porto Alegre, RS.

Marília Lazarotto, Universidade Federal de Pelotas - UFPEL

Professora Adjunta do Centro de Engenharias Universidade Federal de Pelotas, Pelotas, RS.

Gilmar Schafer, Universidade Federal do Rio Grande do Sul - UFRGS

Professor adjunto da Universidade Federal do Rio Grande do Sul, Porto Alegre, RS.

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Publicado

23-12-2021

Como Citar

GRZEÇA, G. T.; WINHELMANN, M. C.; EMER, A. A.; TEDESCO, M.; LAZAROTTO, M.; SCHAFER, G. Breaking seed dormancy in Sesbania punicea (Cav.) Benth. Scientia Agraria Paranaensis, [S. l.], p. 414–418, 2021. DOI: 10.18188/sap.v20i4.27330. Disponível em: https://saber.unioeste.br/index.php/scientiaagraria/article/view/27330. Acesso em: 28 mar. 2024.

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Nota Científica