Abstract
ABSTRACT Physalis peruviana belongs to Solanaceae family and has a high nutritional and nutraceutical potential. The production is intended for fruit consumption and the propagation is mainly by seeds. This study aimed to evaluate the influence of priming on the kinetics of germination of P. peruviana seeds stored at different temperatures. The seeds were stored at 5 and 25 °C in a chamber saturated with zinc chloride solution and in liquid nitrogen (-196 °C). Every 4 months, the seeds were removed from storage for evaluation of germination and moisture content in the laboratory and emergence and development of seedlings in greenhouse. During the last evaluation at 16 months, the seeds under the same conditions were subjected to salt stress. The moisture content varied during the storage period, but was always higher for seeds kept at -196 ºC. These seeds kept high germination percentage in water until 16 months, regardless of the tested temperature; however, in salt solution the germination percentage was significantly reduced.
Highlights
Some botanical families, such as Solanaceae, have been well documented with respect to the various uses of their species
Besides the proven therapeutic use of Physalis angulata, other species are widely used as food, such as P. peruviana L. and P. ixocarpa B; others are used as ornamental and some are considered as toxic (Rufato et al, 2008; Vargas-Ponce et al, 2011)
This study aimed to evaluate the influence of priming on the kinetics of germination of P. peruviana seeds stored at different temperatures
Summary
Some botanical families, such as Solanaceae, have been well documented with respect to the various uses of their species. Since the seed is a natural propagation unit, ex-situ conservation is the most used form, because it occupies small space and requires only periodic monitoring, constituting an efficient method to preserve the germplasm (Santos, 2000; Slageren, 2003). This is a process that requires knowledge on plant cultivation conditions, which will reflect in the quality of the obtained seeds
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