Saratov Region

Preliminary results of studies on the reintroduction of Calophaca wolgarica to the territory of the Saratov region are presented. In the period from 2018 to 2020, the age structure of artificial plantings and changes in the morphological parameters of individuals within them were studied. It is shown that on the territory of the Saratov region, artificial plantings of this species are best located near the protected area “Tulip Steppe near the village of Maksyutovo”.

 The article presents the results of studying the morphological state of three populations of Delphinium pubiflorum on the basis of quantitative traits measured over four years during the period of mass flowering of plants. The greatest difference in quantitative characteristics was shown by the populations from the Krasnoarmeisky and Tatishchevsky districts of the Saratov region.

The biological properties of bacteria-assiociants Myzus cerasi F. in territory of the Saratov region weree studied. 39 strains of bacteria were revealed. 66.6% of the strains were able to use glucose, 87.0% – fixed molecular nitrogen, 56.3% – had the ability to grow at 10 °C, 92.1% of the isolated cultures were alkalotolerant and grown at pH10.