EFFECT OF GOAT'S-RUE RHIZOBIA ON THE FORMATION AND FUNCTIONING OF THE SOYBEAN-BRADYRHIZOBIUM JAPONICUM 634b SYMBIOSIS
Journal Title: Сільськогосподарська мікробіологія - Year 2019, Vol 29, Issue
Abstract
Objective. Study the peculiarities of nodule formation upon the formation of the symbiotic system soybean-Bradyrhizobium japonicum 634b, as well as the symbiotic nitrogen-fixation ability and plant growth and development under the influence of goat’s-rue rhizobia. Methods. Microbiological, physiological, statistical, gas chromatography. Results. In green house experiments, using sand as a substrate for growing plants, the mixed microbial cultures combining soybean nodule bacteria B. japonicum 63 b and goat’s-rue nodule bacteria R. galegae 0702 or R. galegae 0703 in the ratio of 1 : 1 differed from the monoculture bradyrhizobium by their influence on the nodulation, nitrogen-fixation ability of soybean-rhizobial symbiosis and development of soybean plants (variety Almaz). Increased nodulation activity in the primordial leaf and budding phases, as well as a significant decrease in the level of symbiosis nitrogen fixation during budding, were observed when used in binary bacterial compositions of strain R. galegae 0703. These rhizobia of goat’s-rue suppressed the development of the root system of soybeans, but had no significant effect on the formation of the aerial part of the plants throughout the observation period. R. galegae 0702 strain slightly slowed the formation of nodules by bacteria in the primordial leaf phase, which caused a decrease in the number of soybean plants that formed symbiosis with B. japonicum 634b. Goat’s-rue nodule bacteria R. galegae 0702 improved the formation of the root system, and stimulated the growth and development of the aerial part of the macro symbiont in the phase of two trigeminal leaves. Conclusion. Combined inoculation of the rhizobia of goat’s-rue with nodule bacteria B. japonicum 634b showed a multidirectional effect on the formation of symbiosis by soybean plants of variety Almaz and functioning of soybean rhizobial symbiosis. The nature of the influence of R. galegae depended on their strain affiliation.
Authors and Affiliations
N Melnykova, S Kots
Keywords
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- EP ID EP647918
- DOI 10.35868/1997-3004.29.29-36
- Views 94
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