TECHNOLOGY SEED Sebastiania membranifolia Mull Arg (EUPHORBIACEAE)

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Neidiquele Maria Silveira José Donizeti Alves Sara Dousseau Amauri Alves de Alvarenga

Abstract

Sebastiania membranifolia, popularly known as sarandi, is a tree species native to Brazil, usually found in land of alluvial floodplains and river banks, suitable for restoration of degraded areas. Despite the commercial importance of this species, little is known about its mechanisms of propagation. This research evaluated the germinating seeds under different conditions of temperature, substrate and light, and determined methods of scarification in order to establish a suitable protocol for sexual propagation. The study was conducted in chambers with BOD and thermal control photoperiod, testing the following treatments: temperatures of 25, 30 and alternating 20/30o C; substrates (sand-EA, on paper-SP and from paper -EP), four solutions gibberellin (50, 100, 200, 400 mgL-1); potassium nitrate (0.1, 0.2, 0.3 and 0.4%) in the presence (12 h photoperiod) and absence of light. The experimental design was completely randomized with four replications of 50 seeds each. We found that the average degree of seed moisture was 10.4% and the weight of a thousand seeds (PMS) of 3.16 g. The highest percentage of germination was obtained with photoperiod at 25 ° C, on paper (SP) and between role (EP). The concentrations of 100 mg L-1 gibberellin and 0.1% potassium nitrate showed higher germination and vigor. Seed treatment with a gibberellin solution of 100 mgL-1 favored the growth of seedlings, unlike potassium nitrate that inhibit the growth even at low concentration. 

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How to Cite
SILVEIRA, Neidiquele Maria et al. TECHNOLOGY SEED Sebastiania membranifolia Mull Arg (EUPHORBIACEAE). CERNE, [S.l.], v. 19, n. 4, p. 669-675, apr. 2016. ISSN 2317-6342. Available at: <http://cerne.ufla.br/site/index.php/CERNE/article/view/950>. Date accessed: 18 sep. 2019.
Keywords
Substrate, light, temperature, gibberellin, potassium nitrate.
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