Effect of nodule bacterium clones resistant to mineral nitrogen on the intensity of physiological processes and pea plant productivity

摘要

The effect of nodule bacterium clones resistant to mineral nitrogen (the clones obtained by us for the first time using the method of ethylmethansulfonate treatment of bacteria of R. leguminosarum strain 250a) on the intensity of physiological processes in pea plant (Solara cv) grown against the heightened nitrogen background (1.2 of Gelrigel normal) in the substrate was studied in vegetative experiments (sand and soil cultures). It has been shown that the presowing inoculation of pea grain grown by the investigated clones contributed to the increase in the intensity of respiration and nitrogen fixation processes, biomass increase and nitrogen accumulation in it, the rise in pea plant yield and quality. The data obtained could be used when developing and making the preparations of nodule bacteria with the purpose of maximum utilization of biological nitrogen to obtain ecologically pure products.