<abstract xmlns="http://www.w3.org/1999/xhtml">This research was carried out to examine the effects of different doses of bacterial formulation comprised of a mixture of <italic>Bacillus megaterium</italic> TV-91C, <italic>Pantoea agglomerans</italic> RK-92 and <italic>Kluyvera cryocrescens</italic> TV-113C strains on the plant development and bract quality of poinsettias (<italic>Euphorbia pulcherrima</italic> Willd. ex Klotzsch), which are one of the most important potted plants grown for their fleshy bracts of the horticultural sector. The study was carried out in a climate-controlled research greenhouse from 8 August 2018 to 15 January 2019 in Erzurum (Turkey). Rooted cuttings of poinsettia [<italic>E. pulcherrima</italic> Willd. ex Klotzsch cv. Christmas Feelings (CvF)] were used as plant materials in the study. Each of the solutions containing bacterial suspensions 52.5 (T1), 105 (T2), 210 (T3), 420 (T4) and 840 (T5) mL · L−1 of water was diluted 5 times with water and 200 mL · pot−1 was applied to the plant rhizosphere. This study revealed that positive changes incurred in plant height, main flower stem length, plant crown width, bract diameter, green leaf and bract leaf area, leaf total nitrogen content and nitrate reductase enzyme activity parameters in poinsettia plants with increasing doses of the bacterial formulation. This effect has reached the maximum level in the number of bracts, main flower stem length, bract diameter, nitrate reductase enzyme activity, plant fresh weight and maximal root length parameters with the T5 application which has the highest bacterial formulation concentration. The most efficient application of glutamine synthetase enzyme activity was determined as T4.</abstract>

This research was carried out to examine the effects of different doses of bacterial formulation comprised of a mixture of Bacillus megaterium TV-91C, Pantoea agglomerans RK-92 and Kluyvera cryocrescens TV-113C strains on the plant development and bract quality of poinsettias (Euphorbia pulcherrima Willd. ex Klotzsch), which are one of the most important potted plants grown for their fleshy bracts of the horticultural sector. The study was carried out in a climate-controlled research greenhouse from 8 August 2018 to 15 January 2019 in Erzurum (Turkey). Rooted cuttings of poinsettia [E. pulcherrima Willd. ex Klotzsch cv. Christmas Feelings (CvF)] were used as plant materials in the study. Each of the solutions containing bacterial suspensions 52.5 (T1), 105 (T2), 210 (T3), 420 (T4) and 840 (T5) mL · L−1 of water was diluted 5 times with water and 200 mL · pot−1 was applied to the plant rhizosphere. This study revealed that positive changes incurred in plant height, main flower stem length, plant crown width, bract diameter, green leaf and bract leaf area, leaf total nitrogen content and nitrate reductase enzyme activity parameters in poinsettia plants with increasing doses of the bacterial formulation. This effect has reached the maximum level in the number of bracts, main flower stem length, bract diameter, nitrate reductase enzyme activity, plant fresh weight and maximal root length parameters with the T5 application which has the highest bacterial formulation concentration. The most efficient application of glutamine synthetase enzyme activity was determined as T4.

Evaluation of the bacteria formulation different inoculum densities on growth and development of <italic>Euphorbia pulcherrima</italic>

Department of Horticulture, Faculty of Agriculture

Folia Horticulturae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Evaluation of the bacteria formulation different inoculum densities on growth and development of 

This research was carried out to examine the effects of different doses of bacterial formulation comprised of a mixture of Bacillus megaterium TV-91C, Pantoea...

Evaluation of the bacteria formulation different inoculum densities on growth and development of Euphorbia pulcherrima

Article Category: Research Article

Published Online: Sep 10, 2020

Page range: 179 - 188

Received: Mar 30, 2020

Accepted: Aug 14, 2020

DOI: https://doi.org/10.2478/fhort-2020-0017

Keywords
Willd. ex Klotzsch, fleshy bracts, glutamine synthetase activity, nitrate reductase activity, ornamental plant, poinsettia, rhizobacteria formulation

© 2020 Fazilet Parlakova Karagöz, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Evaluation of the bacteria formulation different inoculum densities on growth and development of Euphorbia pulcherrima

Article Category: Research Article

Published Online: Sep 10, 2020

Page range: 179 - 188

Received: Mar 30, 2020

Accepted: Aug 14, 2020

DOI: https://doi.org/10.2478/fhort-2020-0017

KeywordsWilld. ex Klotzsch, fleshy bracts, glutamine synthetase activity, nitrate reductase activity, ornamental plant, poinsettia, rhizobacteria formulation

© 2020 Fazilet Parlakova Karagöz, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Willd. ex Klotzsch, fleshy bracts, glutamine synthetase activity, nitrate reductase activity, ornamental plant, poinsettia, rhizobacteria formulation