Growth-promoting bacteria change the development of aerial part and root system of canola
Plant growth promoting rhizobacteria (PGPR) are soil bacteria that have the ability to colonize the rhizosphere and favor the growth of plants through several mechanisms, such as phytohormone production, biological fixation in nitrogen (BNF), increased efficiency in uptake of nutrients in the soil,...
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Universidade Estadual de Londrina
2018-11-01
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doaj-d2a04e51079240e2a484b643c6a673e62020-11-25T01:13:04ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592018-11-013962375238410.5433/1679-0359.2018v39n6p237518012Growth-promoting bacteria change the development of aerial part and root system of canolaDiego Genuário Gomes0Antonio José Radi1Gisele Silva de Aquino2Universidade Estadual de LondrinaUniversidade Estadual de LondrinaUniversidade Estadual de LondrinaPlant growth promoting rhizobacteria (PGPR) are soil bacteria that have the ability to colonize the rhizosphere and favor the growth of plants through several mechanisms, such as phytohormone production, biological fixation in nitrogen (BNF), increased efficiency in uptake of nutrients in the soil, and greater tolerance to water stress or disease attack. The objective of this work was to evaluate the effects of inoculation of different growth promoting bacteria on the development of canola plants. The experiment was conducted in a greenhouse with a completely randomized design. Four treatments were evaluated: control - without inoculation, Azospirillum brasilense of strain Ab-V5, Rhizobium sp. strain 8121, and Bacillus sp. strain CM. The height parameter of plants was evaluated weekly, starting at 25 days after sowing (DAS). At the end of the evaluations, at 53 DAS, the length of the main root, the dry mass of the aerial part and the root system were measured. The canola showed a linear increase in height from 25 to 53 DAS. Bacillus sp. negatively influenced the growth of the plants, reducing their height in periods 25, 32 and 39 DAS in relation to the control group. A. brazilense. yielded 2.64 times more dry root mass (0.7 g plant-1) than the control plants (0.3 g plant-1). Even though Rhizobium sp. produced an increase in the length of the main root, this was not reflected in an increment of dry mass in the root system. The greatest development of the root system was provided by A. brazilense.http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/31798Agricultura sustentávelBioestimulante agrícolaPGPRRizobactériasCultura de invernoBiodiesel. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Diego Genuário Gomes Antonio José Radi Gisele Silva de Aquino |
spellingShingle |
Diego Genuário Gomes Antonio José Radi Gisele Silva de Aquino Growth-promoting bacteria change the development of aerial part and root system of canola Semina: Ciências Agrárias Agricultura sustentável Bioestimulante agrícola PGPR Rizobactérias Cultura de inverno Biodiesel. |
author_facet |
Diego Genuário Gomes Antonio José Radi Gisele Silva de Aquino |
author_sort |
Diego Genuário Gomes |
title |
Growth-promoting bacteria change the development of aerial part and root system of canola |
title_short |
Growth-promoting bacteria change the development of aerial part and root system of canola |
title_full |
Growth-promoting bacteria change the development of aerial part and root system of canola |
title_fullStr |
Growth-promoting bacteria change the development of aerial part and root system of canola |
title_full_unstemmed |
Growth-promoting bacteria change the development of aerial part and root system of canola |
title_sort |
growth-promoting bacteria change the development of aerial part and root system of canola |
publisher |
Universidade Estadual de Londrina |
series |
Semina: Ciências Agrárias |
issn |
1676-546X 1679-0359 |
publishDate |
2018-11-01 |
description |
Plant growth promoting rhizobacteria (PGPR) are soil bacteria that have the ability to colonize the rhizosphere and favor the growth of plants through several mechanisms, such as phytohormone production, biological fixation in nitrogen (BNF), increased efficiency in uptake of nutrients in the soil, and greater tolerance to water stress or disease attack. The objective of this work was to evaluate the effects of inoculation of different growth promoting bacteria on the development of canola plants. The experiment was conducted in a greenhouse with a completely randomized design. Four treatments were evaluated: control - without inoculation, Azospirillum brasilense of strain Ab-V5, Rhizobium sp. strain 8121, and Bacillus sp. strain CM. The height parameter of plants was evaluated weekly, starting at 25 days after sowing (DAS). At the end of the evaluations, at 53 DAS, the length of the main root, the dry mass of the aerial part and the root system were measured. The canola showed a linear increase in height from 25 to 53 DAS. Bacillus sp. negatively influenced the growth of the plants, reducing their height in periods 25, 32 and 39 DAS in relation to the control group. A. brazilense. yielded 2.64 times more dry root mass (0.7 g plant-1) than the control plants (0.3 g plant-1). Even though Rhizobium sp. produced an increase in the length of the main root, this was not reflected in an increment of dry mass in the root system. The greatest development of the root system was provided by A. brazilense. |
topic |
Agricultura sustentável Bioestimulante agrícola PGPR Rizobactérias Cultura de inverno Biodiesel. |
url |
http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/31798 |
work_keys_str_mv |
AT diegogenuariogomes growthpromotingbacteriachangethedevelopmentofaerialpartandrootsystemofcanola AT antoniojoseradi growthpromotingbacteriachangethedevelopmentofaerialpartandrootsystemofcanola AT giselesilvadeaquino growthpromotingbacteriachangethedevelopmentofaerialpartandrootsystemofcanola |
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