Connection with Inoculation of Rhizobium leguminosarum
L. E. MAKAROVA
Abstract
The dependence of the time of going through definite stages of nodulation process on the roots of pea plants infected by bacteria Rhizobium laguminosarum upon the surrounding temperature (optimal or lowered) and the substrate on which the plants had been grown (sand and aquatic medium) has been studied. It is demonstrated that low temperature and the hydroculture conditions retard the nodulation process, especially the 1-st stage including the period from the moment of infection to emergence of the first nodule germs. Therein, a more effective factor is the low temperature. It is established that under all the changes of germination conditions at all the nodulation stages studied, changes in the content of "soluble" (extractable with ethyl acetatec and butanol) and "insoluble" (attached to cellular structures) phenolic compounds (PC) take place. However, the general rules in the changes of PC content for environmental conditions created by us and inhibiting the nodulation process have not been elucidated. P. 243-248
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