Abstract
Campomanesia aurea is a potentially ornamental native fruit shrub. There are no studies on the seed germination capacity and fruit properties of the species. Therefore, the main goal of this paper was to describe the seed germination and the physical and chemical properties of fruits from two C. aurea accession areas. The study was conducted with fruits collected from two native vegetation areas located in the Morro do Osso Natural Park and in the municipality of Barao do Triunfo, Brazil. Physical and chemical analyzes, seed counting and germination tests were performed. Results were submitted to ANOVA and the means were compared by t test at 5% error probability. C. aurea has oblong-shaped fruits weighting around 1.26 g with a high content of vitamin C. Each fruit usually has four intact seeds of which 3% are polyembryonic. Seed germination averaged 93% in 20 days. It is concluded that the C. aurea fruits collected from two different accession areas differ in the concentration of TSS, TSS/TA ratio and vitamin C content, but not physically. Seeds have shown a high germination rate.
Highlights
No significant statistical differences between the collection areas have been observed for the physical properties of the fruits
LD/ED 0.82ns 0.79 0.80 10.51 0.07. Such variation in fruit mass has been observed for other species from the same genus, such as C. phaea (Vallilo et al, 2005; Bianchini et al, 2016), C. lineatifolia (Balaguera, Álvarez, & Bonilla, 2009), C. adamantium (Melchior, Custódio, Marques, & Neto, 2006; Dresch, Scalon, Masetto, & Vieira, 2013) and C. xanthocarpa (Santos et al, 2009), since they are non-domesticated species possibly collected in situ from mother plants with a high genetic variability often located in areas of distinct edaphoclimatic conditions
The C. aurea fruits collected from the municipality of Barão do Triunfo have shown a higher amount of total soluble solids (TSS) content (14.37 °Brix) than those collected from the Morro do Osso Natural Park (9.86o Brix) (Table 2)
Summary
Berg is a subshrub reaching up to one meter in height (Stumpf, 2009). It is widely distributed around areas of the southern Brazilian highlands occupied by gramineous or shrub fields (Reitz, 1977). It belongs to the family Myrtaceae and is popularly known as guabirobinhado-campo or araçá-rasteiro. Flowering is intense and occurs from october to january with fruits maturing from december to february. Fruits are globose or oblong berries ranging from green to yellow with a sweet-acidulated flavor juicy pulp (Lorenzi, Bacher, Lacerda, & Sartori, 2006)
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