Higher plants in the variability of Azotobacter Heredity and variability of plants, animals and microorganisms

Zinov'eva, K.G.

Akad Nauk Sssr Moscow 2: 416-421


Accession: 024785829

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Prolonged cultivation of Azotobacter in the rhizosphere of higher plants (weeds, oats, corn, potato and other cultures), results in hereditary stable variants which are distinguished from the initial strain by the intensity of the N-fixation, catalase and dehydrogenase activity and by other properties. Some of the variants possessed a higher multiplication and N-fixation activity and had a higher adaptation in the rhizosphere of certain plants. The introduction of such strains into the soil, under the proper plants, resulted in a significant increase in productivity. One of the variants which was adapted to wheat passed industrial tests, and azotobacterin is being prepared from it for Ukrainian SSR wheat.