Sowing qualities of seeds of Echinacea Purpurea (L.) Moench

Abstract
The energy of germination and laboratory germination of Echinacea purpurea seeds have been studied, as it is the sowing qualities of seeds that are the basis for successful reproduction of the species in culture. Peculiarities of germination of culture seeds depending on harvest terms are studied. It is noted that the seeds of 2017-2018 are not conditioned and are not recommended for cultivation in medicinal crops in order to obtain quality medicinal raw materials according to generally accepted standards, while the seeds of 2020 harvest have a fairly high quality and belong to the basic category. The article also presents data on the effect of disinfection with ethyl alcohol on the sowing qualities of Echinacea purpurea seeds, the tendency to increase germination energy and germination in the variant with treated seeds. Seeds, endowed with a high rate of laboratory germination, belongs to the category of original and is recommended for further propagation. Such seeds may have good field germination, although this figure will be slightly lower in any case, because the laboratory for growing seeds creates optimal conditions, which is not always possible in the field. This is usually associated with the influence of biotic and abiotic factors: temperature, humidity, light, conditions and timing of sowing, soil fertility, its infestation by pests and pathogens, and so on. In the course of studies of germination energy and laboratory germination, attention was paid to the degree of damage to the seeds of Echinacea purpurea by mold fungi. On average, when determining the energy of germination, the degree of damage by molds was weak, but when determining laboratory germination, a large degree of damage to achenes by molds was additionally manifested. When comparing the degree of fungal infestation of treated and non-disinfected seeds, we noted a low degree of infestation (for disinfected achenes) and a medium degree of infestation (for non-disinfected seeds). When determining the germination energy of disinfected echinacea seeds, the signs of purple lesions were generally invisible.