Development of blueweed (Echium vulgare L.) at different soil conditions
Beata Król
Abstract
Bluewed is a new promissing species of great potential to use in pharmacy as well as in food industry because of the chemical composition of seeds. In a pot experiment conducted in 2000–2002 the effect of different soil materials (sandy, silty, and compost) on growth and development of blueweed plants (Echium vulgare L.) was examined. Seeds were sown in two terms: at the begining of April and May. Plants had the best conditions for growth and development on compost: they were the highest and produced much more vegetative mass and seeds as compared with those from sandy and silty soil materials. There were no significant differences in the features compared between plants grown on sandy material and silty one. A later date of sowing (in May) resulted in better emergence but did not influence other features of plants. The soil material influenced neither content of oil in seeds nor its fatty acid composition. Later sowing of seeds caused a lower content of oil, but did not differentiate the content of GLA and SDA in oil.
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