СОСТОЯНИЕ ПОПУЛЯЦИЙ EREMURUS SPECTABILIS BIEB НА ТЕРРИТОРИИ СТАВРОПОЛЬСКОГО КРАЯ

Abstract

The study of the floral composition, including rare species on the territory of the Stavropol Krai, started from the first days of the operation of the botanical garden in Stavropol, the 1960s. Between the 1960s and 1970s, the garden staff identified the growing areas of Eremurus spectabilis Bieb. in natural conditions, as well as studied the questions related to biology, morphology, morphogenesis, photoperiodism and methods of its reproduction. In 2009, the garden employees set the task of studying the dynamics of the current state of populations of the Eremurus representative in the vicinity of Stavropol, in the Yankulskaya (Shatyr Kurgan mountain) and Sengileevskaya hollows (Balka Trety Log). The survey of the territories according to the first level of monitoring was carried out in the Andropov region and in the Caucasian Mineral Waters (Kavminvody) region. As a result of long-term expedition trips, some deterioration in the state of the Eremurus spectabilis populations has been recently established in the Trety Log hollow (balka): a decrease in the habit of peduncles and inflorescences, seedcase setting, the manifestation of inflorescence deformation in almost all populations. This can be attributed to deteriorated weather conditions – a prolonged dry spring-summer period against the background of a heavy clay composition of the soil. No diseases or pests have been found. The populations are stable, since the renewal of plants in the populations at this stage is equal to their decrease. According to the ratio of age groups, growing populations are currently noted on Shatyr Kurgan, where young, not yet reproductive individuals prevail. Observations of the state of Eremurus spectabilis in natural habitats should be continued in dynamics (once every 3–5 years) in order to note the success and stability of a particular cenopopulation in the community or toanalyze the critical points of its development.