PHYSIOLOGIC DORMANCY BREAKING METHODS OF Caryocar brasiliense Camb.

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Jeferson Luiz Dallabona Dombroski Renato Paiva João Mauricio Cavalcante Alves Breno Regis Santos Rairys Cravo Nogueira Patrícia Duarte de Oliveira Paiva Sandro Barbosa

Abstract

Caryocar brasiliense is a native species from Brazilian cerrado that has a considerable economic potential. The aim of this work was verifying the effect of substances with potential for seed germination stimulation. Seeds were extracted from the endocarps and set to germinate in paper rolls moistened with the following solutions: distilled water (Control); 2mmol L-1 KNO3 (Nitrate); 2mmol L-1 Etephon (ET); 1mmol L-1 GA3 (GA), 1mmol L-1 GA3 + 2mmol L-1 Etephon (GA + ET). The germination and the germination mean time were, respectively, 54.0% and 9.3 days in the GA treatment, 47.3% and 11.0 days in the GA + ET treatment, 32.0% and 12.2 days in the Control treatment, 30.7% and 13.1 days in the Etephon treatment, and 20.1% and 13.1 days in the Nitrate treatment. Low germination rates were observed in the GA + ET treatment up to the ninth day from sowing, when compared to the GA treatment, what indicates a possible seed germination inhibition due to ethylene presence.

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How to Cite
DOMBROSKI, Jeferson Luiz Dallabona et al. PHYSIOLOGIC DORMANCY BREAKING METHODS OF Caryocar brasiliense Camb.. CERNE, [S.l.], v. 16, n. 2, p. 131–136, may 2015. ISSN 2317-6342. Available at: <http://cerne.ufla.br/site/index.php/CERNE/article/view/148>. Date accessed: 17 sep. 2019.
Keywords
Caryocaraceae, dormancy breaking, germination mean time
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Article