The assessment of bio-ecological features of plants Tulipa biebersteiniana Schult. et Schult. fil. in the model forest habitats of the Krasnosamarsky forest

The paper presents some preliminary results of the monitoring of Tulipa biebersteiniana Schult. et Schult. fil. plants (category of rare and endangered plant species). By summarizing the available sources of science literature we have compiled a general description of morphological and bio-ecological species characteristics. The results of the field study fulfilled in 2012–2015 in two population groups of the Krasnosamarsky forestry (Samara region) were used to determine morphometric parameters of Tulipa biebersteiniana plants. The data also helped us to assess the variability level and to make a comparison with plant quantitative traits given in the literature. It was found that the shoot length of Tulipa biebersteiniana plants varied in the range of 23 … 50 cm, the maximum average length of 40 cm are presented in plants of population group number two. The distribution of shoot length among individuals of the second population group is more stable, changes depending on the year of vegetation are poorly expressed. The lengths of shoots inside the range specified for the various parts of the area in the literature with a significant proportion of «high» plants in the population is studied. This may be a sign of good growth conditions for Fritillaria ruthenica that gives an opportunity to the plant conservation in natural communities in the absence of limiting anthropogenic factors.