Summary
We investigated the incidence ofAzotobacter on barley roots and in the rhizosphere soil and the influence of bacterization of seeds by various strains on the amount ofAzotobacter and the crop yields of barley. We used standard and freshly isolated strains and strains which were subjected to long-term repeated cultivation with growing barley roots (so-called passaging) and which were adapted in different ways to the root system of barley.
We confirmed that by bacterization of seeds the numbers ofAzotobacter in the rhizosphere are increased. On the roots of plants adapted (passaged) strains ofAzotobacter frequently develop better than the original strains, while in the rhizosphere soilAzotobacter is sometimes more abundant after bacterization with the original strains. We have proved that there are significant differences in the influence of individual strains ofAzotobacter on the plant. We did not record a direct relationship between the numbers ofAzotobacter and its influence on the grain yield.
Owing to the considerable natural variability of the distribution ofAzotobacter on roots and in the soil, we always analysed ten combined samples and used the average values. For evaluation of the results of the numbers ofAzotobacter in the rhizosphere soil we used the analysis of variance. We evaluated the individual stages of growth of the plants separately and defined orthogonal contrasts for a more detailed evaluation of the differences recorded.
Abstract
Мы расследование случаев Azotobacter о корнях и ячменя в rhizosphere почвы и влияние bacterization семян различных шта ммов на сумму в Azotobacter и урожайность сельск охозяйственных куль тур ячмень. Мы исполь зовали стандартные и свежевыжатые изол ированных штаммов и штаммов, которые бы ли подвергнуты к дол госрочным неоднокра тные культивировани я с ростом корней ячм еня (так называемые passaging) и которые были адапт ированы в разных пути корневой систе мы ячменя. Мы подтве рдили, что, по bacterization Семена номера Azotobacter в rhizosphere растут. На корнях растений, адаптиров анных (passaged) штаммов Azotobacter часто лучше, чем разрабатывать оригинал штаммов, в то время как в rhizosphere почв Azotobacter иногда больше изобилии после bacterization с пе рвоначальным штаммов. Мы доказали, что существует значительные разли чия в влияние индивидуальных шта ммов Azotobacter о растений. Мы не запись прямого отношения между чис лом Azotobacter и ее влияние на урож айность зерна Из-за значительной естественной измен чивости о распредел ении Azotobacter в корни и в поч ву, мы вс егда анализи руются комбинирован ные де сять образцов и испо льзуется в среднем ценностей. Для оценк и результатов от числа Azotobacter в rhizosphere почвы мы использова ли анализ дисперсии Мы проверили отдель ных этапах роста рас тений и определяется отдельно ортогонал ьных контрастов для более подробного оценка различий в отчет.
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We wish to thank Mrs. A. Vávrová for technical assistance in the laboratory and field trials.
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Vančura, V., Macura, J., Fischer, O. et al. The relation ofAzotobacter to the root system of barley. Folia Microbiol 4, 119–129 (1959). https://doi.org/10.1007/BF02928536
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DOI: https://doi.org/10.1007/BF02928536