Plants of Viola cornuta displaying typical virus symptoms were observed during spring 2003 in a plant nursery in Córdoba, central Argentina. Electron microscopic examinations of symptomatic leaf samples revealed the presence of isometric virus-like particles about 30 nm in diameter. Subsequent serological analysis allowed the identification of the pathogen as a subgroup I strain of Cucumber mos...

violet is one of the ornamental plants with a good value in landscaping and herbal medicine. salicylic acid is a signaling agent involving in secondary metabolite production. the aim of this study was to evaluate the physiological responses of violet flowers to exogenous salicylic acid. this experiment was conducted in the greenhouse, as a completely randomized design. salicylic acid was spraye...

Edible flowers are a rich source of phytochemicals with potential health benefits. Yet, changes in production practices can influence the phytochemical composition edible flowers. Practices such as addition biochar have been used to affect growing media properties well conserve peat resources. However, there is little known about how affects To determine if Viola cornuta, four cultivars were su...

The natural floral color change in Viola cornuta cv. Yesterday, Today and Tomorrow (YTT) provides an opportunity to examine the expression of genes along the anthocyanin biosynthetic pathway in response to known environmental triggers during ontogeny. We have cloned and sequenced gene fragments from three anthocyanin biosynthetic genes, chalcone synthase (CHS), dihydroflavonol 4-reductase (DFR)...