The Content of Phenolic Compounds and Organic Acids in Two Cultivars Flowers and Its Dependence on Light Colour and Substrate.

The main focus of the study was to determine the content of phenolic acids, flavonoids, and organic acids in the flowers of 'Petite Gold' and 'Petite Orange'. The growth of the plants was assessed depending on the cultivation conditions. The above plants were illuminated with white light, whereas the 'Petite Gold' ones with white light enhanced with blue or red light.

Content of Phenolic Compounds and Organic Acids in the Flowers of Selected Cultivars.

The study focused on the determination of phenolic acids, flavonoids and organic acids in five tulip cultivars 'Barcelona', 'Columbus', 'Strong Gold', 'Super Parrot' and 'Tropicana'. The cultivars grown in field and in a greenhouse were exposed after cutting to different times of storage (0, 3 and 6 days). The phenolic profile contained 4-hydroxybenzoic, 2,5-dihydroxybenzoic, gallic, vanillic, syringic, salicylic, protocatechuic, -cinnamic, -coumaric, caffeic, ferulic, chlorogenic and sinapic acids, as well as quercetin, rutin, luteonin, catechin and vitexin.

Genetic diversity of ornamental Allium species and cultivars assessed with isozymes.

The aim of the study was to verify the similarity of 13 species and 5 cultivars of ornamental alliums and classify them into groups based on morphological and isozyme variation. The work embraced: Allium aflatunense, A. caeruleum, A.