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Avaliou-se o potencial de germinação das sementes de orelha-de-macaco após os tratamentos pré-germinativos e o crescimento inicial das mudas tratadas com ácido giberélico (GA) e sombreamento. As sementes receberem os seguintes tratamentos de escarificação + embebição: 1) H2SO4/5'; 2) H2SO4/5'+água/24 h; 3) H2SO4/5'+GA 200 mg.L-1/24 h; 4) H2SO4/5'+KNO3 1%/24 h; 5) H2SO4/10'; 6) H2SO4 /10' +água/24 h; 7) H2SO4/10'+GA 200 mg.L-1/24 h; 8) H2SO4 /10'+ KNO3 1%/24 h; 9) Água 24/ h; e 10) testemunha e a semeadura em casa de vegetação. As mudas foram tratadas com GA 0, 50 e 100 mg.L-1 e mantidas em sombrite 50% de sombra e a pleno sol até 180 dias após a semeadura. Não se observou germinação na testemunha e na imersão apenas em água. A emergência, TMPA, MSR e MSPA não variaram entre os tratamentos de escarificação (média de 89%; 6,55 cm; 0,08 g; e 1,8 g; e o TMR em H2SO4 /10'+ KNO3 (13,73 cm). Com base nesses resultados, as sementes podem ser escarificadas por 10'com H2SO4. As mudas a pleno sol apresentaram maior altura (51,94 cm), MSF (3,6 g), MSPA (7,21 g), MSR (4,27 g) e MST (11,59 g). A TAL, RAF e TCR não variaram entre os níveis de luz e tratamentos com GA. As doses de giberelina estudadas não alteraram o crescimento das mudas. The germination potential of 'Orelha de macaco" seeds after pre-germination treatments and the initial growth of seedlings treated with gibberellic acid (GA) and shade were evaluated. Seeds received the following treatments of scarification and imbibition: 1) H2SO4/5 minutes; 2) H2SO4/5 minutes + water/24 hours; 3) H2SO4/10 minutes + GA 200 mg.L-1/24 hours; 4) H2SO4/5 minutes + KNO3 1%/24 hours; 5) H2SO4/10 minutes; 6) H2SO4/10 minutes + water/24 hours; 7) H2SO4/10 minutes + GA 200mg.L-1/24 hours; 8) H2SO4/10 minutes + KNO3 1%/24 hours; 9) water 24 hours; 10) control and sowing was carried out in green house. Seedlings were treated with GA 0.50 and 100 mg.L-1 and kept under 50% shade and in full sun up to 180 days after sowing. There was no germination in the control and for imbibition only in water. Emergence, LR, DMR and DMAP did not vary between scarification treatments (89% mean, 6.55cm, 0.08 g and 1.8g, LR in H2SO4/10 minutes + KNO3 (13.73). Based on these results, seeds can be scarified for 10 minutes with H2SO4. Seedlings in full sun showed the highest height (51.94 cm), DML (3.6g), DMAP 97.21g), DMR (4.27g) and TDM (11.59g). ALR, LAR and RGR did not vary between light intensity and GA treatments. The studied doses of gibberellin did not alter seedling growth

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Germinação e crescimento inicial da muda de orelha-de-macaco (Enterolobium contortisiliqunn (Vell.) Morong): efeito de tratamentos químicos e luminosidade