Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

QUEBRA DE DORMÊNCIA EM SEMENTES DE Schefflera morototoni (Aubl.) Maguire et al.

2019; Centro Científico Knowing; Volume: 16; Issue: 29 Linguagem: Inglês

10.18677/encibio_2019a115

2317-2606

Marcella Karoline Cardoso Vilarinho, Vitor Sales, J. M. L. Nascimento, Daniela Soares Alves Caldeira, W.L. Loza de Souza,

Agricultural and Food Sciences

The species Schefflera morototoni (Aubl.)Maguire, Steyerm.& Frodin, belongs to the family Araliaceae, popularly known as morototó.The species presents a low germination rate, supposedly due to its integument being rigid, or embryo related problems.Therefore, the objective of this study was to evaluate the seed dormancy breaking of Schefflera morototoni.The study was conducted in the Laboratory of Seeds of the Agronomy course at the State University of Mato Grosso, Cáceres -MT campus.Before the installation of the experiment the seeds presented an average of 6.54% of water content.The experimental design adopted was completely randomized, with 11 treatments and 4 repetitions.The treatments used were: 100ºC for 1 second and in ambient temperature water, 100ºC for 10 seconds and in ambient temperature water, 100ºC for 1 second and in cold water, 100ºC for 10 seconds and in cold water, 100ºC for 1 second + hypochlorite / 1 minute , 100 ° C for 10 seconds + hypochlorite / 1 minute, 100 ° C for 1 second, 100 ° C for 10 seconds, acetic acid for 10 minutes, acetic acid for 15 minutes and control seeds.The germination speed index, the germination index and the first germination count were evaluated.After the 42 days of the experiment, it was observed that, for all evaluated parameters, no germination occurred in any of the proposed treatments.The treatments used to evaluate the dormancy breaking of Schefflera morototoni seeds were not efficient, possibly the storage time and the water content influenced the seeds not to germinate.