Izvestiya of Saratov University.
ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)

Tulipa gesneriana

The Structure of Morphological Variability and Vitaliti in the Populations of Tulipa Gesneriana L. in the Lower Volga Region and Adjacent Territories

During four field seasons (2013–2016.) conducted a study of the structure of morphological variability and vitality. 38 populations of Tulipa gesneriana in several areas of the Lower Volga region and adjacent territories. The significant variability in the vitality structure of the populations as on the interpopulation level, and year. It is revealed that years of observation in General, most populations of the species were quite pronounced tendency for a gradual reduction of vitality. from 2013 to 2015 and significantly improve the plants in them in 2016.

Pollen Grain Size Polymorphism in Late Tulip (Tulipa gesneriana L., 1753) Cenopopulations within the Territory of “Ivanovo Field” Natural Boundary

One of the large populations of the late tulip (Tulipa gesneriana L., 1753) grows in Fedorovsky district of the Saratov region on the territory of the regional “Ivanovo field” natural boundary where it is presented by three cenopopulations. The work is aimed at studying of mature pollen morphology of the given cenopopulation plants characterised by various variants of flower parts coloration. We analysed the dimension and other morphological features of the pollen fixed in 2012 when rich diversity of floral envelope coloration was registrated in the research area.