Abstract
Abstract: Garcinia gardneriana (Planch. & Triana) Zappi is a native species widely distributed in Brazil. It has ornamental features, edible fruits, and its leaves have medicinal properties; however, its potential has not been explored. The aim of this study was to evaluate seed physiological performance due to dormancy, desiccation and storage tolerance. Only decoated seeds germinated. Seeds had an initial water content of 1.07 g H2O.g-1 dw and final germination of 95%. Both desiccation to 0.67 g H2O.g-1 dw and storage at 25 ºC for ninety days resulted in decreased germination, 43 and 41%, respectively. Desiccation below 0.25 g H2O.g-1 dw and storage for ninety days at 5 ºC were lethal. A rapid decrease in enzymic protection by superoxide dismutase and ascorbate peroxidase was correlated to desiccation sensitivity. Total polyamines content was higher in fresh seeds and markedly decreased with desiccation. The decrease in enzyme activity and polyamines content seems to be associated with seed viability loss. In sum, G. gardneriana seeds have a low tolerance to desiccation and are sensitive to chilling. Therefore, the seeds can be categorized as recalcitrant and dormant, a rare combination in terms of seed biology.
Highlights
Garcinia gardneriana (Planch. & Triana) Zappi, known as bakupari, is a fruit species from the Clusiaceae family, which comprises 27 genera and 1.090 species (Stevens, 2007)
The boxes with seeds were arranged in growth chambers at 25 ± 2 oC and photoperiod of twelve hours (142 μmol. m-2.s-1)
Removal of the seed coat resulted in a mass increment of 11% throughout the imbibition test
Summary
Garcinia gardneriana (Planch. & Triana) Zappi, known as bakupari, is a fruit species from the Clusiaceae family, which comprises 27 genera and 1.090 species (Stevens, 2007). & Triana) Zappi, known as bakupari, is a fruit species from the Clusiaceae family, which comprises 27 genera and 1.090 species (Stevens, 2007). The species is widely distributed in Brazil, occurring in the Amazon Rainforest, Caatinga, Central Brazilian Savanna and Atlantic Rainforest (Bittrich et al, 2015). It is a treesized plant with bright yellow fruits, containing one to three seeds. Not domesticated, this species has high economic potential. Little is known about the seed germination process and the influence the environment has on it
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