Abstract
Myrcianthes pungens, native fruit with medicinal, ornamental and ecological potential, lacks information on biometry and technology for seed germination. Thus, the aim of this study was to characterize the fruits and seeds of M. pungens, determining the appropriate substrate for laboratory tests, as well as to evaluate the effect of different concentrations of gibberellic acid (GA3) on the germination of the species. In the biometry, the mensuration of the fruits and seeds was made with the aid of a digital caliper. In the laboratory, three substrates (between filter paper, between vermiculite and between sand) were used, with five concentrations of GA3 (0; 125; 250; 375 and 500 mg L-1) and the tests were conducted in a germination chamber. The percentage of germination, hard seeds, germination speed index and seedling length root and shoot were evaluated. The average fruit length and width were 17.38 and 16.05 mm, respectively. The fruits presented one or two seeds with 8.10; 9.56 and 6.49 mm in length, width and thickness. The germination test is more efficient between fine sand, and vermiculite may also be used. The wetting of the substrate with gibberellin in the concentration of 125 to 274 mg L-1 optimizes the percentage and speed of germination.
Highlights
Myrcianthes pungens (BERG) LEGR, which belongs to the family Myrtaceae, is popularly known as guabijú, guabijuzeiro, among others
The results obtained in the biometric characterization of the fruits and seeds of M. pungens in the present study, differ from the values evidenced by Assumpção, Dalmaso, and Bragança (2017) evaluating the same species
The substrates between sand (BS) and between vermiculite (BV) are recommended for the species belonging to the same botanical family of M. pungens (Brasil, 2013)
Summary
Myrcianthes pungens (BERG) LEGR, which belongs to the family Myrtaceae, is popularly known as guabijú, guabijuzeiro, among others. The guabijú presents a medicinal potential, with analgesic and antiseptic properties (Nessello, Campos, Capistrano, Buzzi, & Cechinel Filho, 2016), antioxidant activity (Dalla Nora et al, 2014), and presents positive effects in Alzheimer’s treatment (Silveira et al, 2011). Besides those indications, it presents a great environmental value, being used for reforestation of degraded areas and permanent preservation because its flowers are nectariferous and its fruits are attractive to bird fauna (Backes & Irgang, 2009)
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