Abstract
Baccharis trimera (Less.) DC (E1) and Baccharis crispa Spreng. (E2) possess potential antimicrobial and anti-inflammatory properties. Qualitative and quantitative information on seed germination on these species is scarce. The objective of this investigation was to establish a protocol for evaluating seed germination of E1 and E2 and to analice the scoring and curve fitting by the Germinator package, for different periods of germination were between 0.93 and 0.99. Both species showed differences in germinability and mean germination time, 27 days for E1 and 20 days for E2. The germination dispersion showed that E1 germination was homogeneous, with differences in growth pattern, whereas the results on germination of E2. The mean speed of germination determined with the experimental data was close to the values obtained by the Germinator package, with a maximum germination of more than 34%, proving that the software was efficient for evaluating germination.
Highlights
The plants of the family Asteraceae have been widely studied, some species from the genus Baccharis sp. are used in popular medicine and phytotherapy
Regardless the species, the standard procedure to perform the X-ray test followed by the standard germination test (ISTA, 2008), was not appropriate due to the size of the seeds, the number of seeds per box was increased from 25 to 200 to guarantee the evaluation of the germination
The obtained results showed that weight and moisture degree of B. trimera (E1) and B. crispa (E2) seeds are in the ideal pattern for harvesting and storing seeds of orthodox species
Summary
The plants of the family Asteraceae have been widely studied, some species from the genus Baccharis sp. are used in popular medicine and phytotherapy. In Brazil, the Baccharis species, which have cladodes are popularly called “Carqueja” in Brazilian Portuguese, and they are used due to its medicinal properties, digestive, antimicrobial and anti-inflammatory effects, treatment of diabetes, liver dysfunctions and rheumatism (Rabelo & Costa, 2018; Fukuda, Ohkoshi, Makino, & Fujimoto, 2006; Gené et al, 1996; Oliveira, Endringer, Amorim, Brandão, & Coelho, 2005; Torres et al, 2000). Their chemical constituents are used in the synthesis of drugs and in the beverage industry due to the bitter taste (Campos et al, 2016). B. trimera has glandular trichomes and B. crispa glandular and tector, with smooth cuticle on both (Budel et al, 2012)
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