Effects of wheat plant inoculation with cytokinin-producing microorganisms on plant growth at increasing level of mineral nutrition

Effects of wheat plant inoculation with cytokinin-producing microorganisms on plant growth at... Triticum durum Desf. plants were grown for 11 days in sand culture on nutrient solutions with optimum or lowered content of mineral nutrients. Thereafter, the level of mineral nutrition was increased in some portion of deficient plants. Two days before, plants were inoculated with cytokinin-producing microorganisms of the Bacillus genus. Nutrition deficiency resulted in a decrease in the rate of plant biomass accumulation, which was correlated with the level of active cytokinins in both roots and shoots. After improving the mineral nutrition of noninoculated plants, the rate of their biomass accumulation increased and, by the end of experiment, their shoot fresh weight was 1.5-fold higher than in deficient plants; however, it was still by 20% lower than in plants continuously growing at optimum mineral nutrition. Inoculation resulted in the considerable increase in the cytokinin content in shoots as compared with all other treatments. In this case, after the improvement of plant mineral nutrition, the rates of growth and relative biomass accumulation increased sharply; as a result, these plants had the highest dry and fresh weights. Thus, inoculation with cytokinin-producing bacteria was beneficial for plant growth after their transfer from deficient to sufficient mineral nutrition. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Effects of wheat plant inoculation with cytokinin-producing microorganisms on plant growth at increasing level of mineral nutrition

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2009 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Sciences ; Plant Physiology
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443709060119
Publisher site
See Article on Publisher Site

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