Basis for the competitiveness of Rhizobium japonicum in nodulation of soybean. Final progress report
This study sought to identify molecular, genetic and environmental factors most crucial to the ability of an inoculated strain of rhizobia to nodulate soybean roots in the face of competition from indigenous microorganisms. Co-inoculation of a more efficient strain with a less-efficient strain resulted in the more efficient strain occupying a higher percentage of nodules. When culture conditions became less stringent the less efficient strain became more competitive. The number of infections formed was related in a direct manner to nodulation efficiency. The strain which was more nodulation efficient also was more infection efficient. That the number of infections per se, as determined in a single inoculum, can not be the only factor in determining the competency was indicated by experiments in which one strain formed more total infection yet nodule occupancy was equally distributed. 5 figs., 9 tabs.
- Research Organization:
- Battelle-Charles F. Kettering Research Lab., Yellow Springs, OH (USA)
- DOE Contract Number:
- FG02-84ER13211
- OSTI ID:
- 5072304
- Report Number(s):
- DOE/ER/13211-2; ON: DE87002015
- Country of Publication:
- United States
- Language:
- English
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(Study of the basis for the competitiveness of Rhizobium japonicum in the nodulation of soybean): Progress report, (May 1986-May 1987)
Study of the basis for the competitiveness of Rhizobium japonicum in the nodulation of soybean