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Substrate effect and different pre-germinative treatments on seed germination of Tento – Ormosia paraensis Ducke (Fabaceae)

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Author(s): Cândida Lahís Mews | Divino Vicente Silvério | Henrique Augusto Mews | Roberta Thays dos Santos Cury

Journal: Biotemas
ISSN 0103-1643

Volume: 25;
Issue: 1;
Start page: 11;
Date: 2012;
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Keywords: Dormancy-break | Forest nurseries | Mechanical scarification | Reforestation

ABSTRACT
The aim of this study was to evaluate the efficacy of pre-germinative treatments in different substrates for dormancy-break of Ormosia paraensis Ducke seeds. Four pre-germinative treatments were evaluated: 1) mechanical scarification, 2) mechanical scarification and water soaking, 3) heat shock, and 4) control. The seeds treated were planted in different substrates: sand, sawdust, and forest soil. In each substrate, three replicas of 50 seeds for each pre-germinative treatment (total of 1,800 seeds) were used. To assess possible differences and interaction between the pre-germinative treatments and the substrates a factorial ANOVA was used. Furthermore, the Tukey test (p0.05). The treatments with higher germination rates were mechanical scarification (28.4%) and mechanical scarification with water soaking (36.4%), which did not differ from each other, but they were different from the heat shock (0.02%) and control (2%) (p
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