Saratov Region

 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.