The influence of bacterization on the formation of the crop structure of soybean isogenic lines by E-genes in conditions of different photoperiod

Abstract

Aim. To study the effect of treatment with the Bradyrhizobium japonicum 634b strain on the formation of the crop structure of soybean lines isogenic by photoperiodic sensitivity control genes, under conditions of long and short days. Methods. The experiment was done in the field. After sterilization, the seeds were treated with Bradyrhizobium japonicum 634b and planted in the soil; control test - seeds treated with distilled water. Plants were grown under natural long day conditions (16 h), in phase V3 the experimental plants were exposed to (artificially created) short day (9 h) for two weeks. The elements of the crop structure were analyzed. Results. In the short day condition and bacterization, we observe a significant decrease in the shoot length, the number of pods and seeds in short-day lines, and at the same time a significant increase in the indicators in long-day lines. In the long day condition, we observe more complex regularities, which, we assume, are associated with a closer and more specific interaction between the plant genotype and microorganisms. Conclusions. It was revealed that the genotype and its interaction with the bacterization factor has the greatest influence on the studied indicators, both under short and long day conditions.