自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 20    No. 1    January 2013

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Evaluation of plant growth promoting potential of four rhizobacterial species for indigenous system
Mokone Peter Hou, Babalola Olubukola Oluranti

Department of Biological Sciences, Faculty of Agriculture, Science and Technology,
North-West University, Private Bag X2046, Mmabatho 2735, South Africa

Abstract:The aim of this work was to see whether Pseudomonas putida NWU12, Pseudomonas fluorescence NWU65, Vibrio fluvialis NWU37 and Ewingella americana NWU59 are beneficial to plants and are able to promote plant growth and development when inoculated as plant growth-promoting rhizobacteria (PGPR). The four rhizobacteria were tested in vitro for PGPR activities and on spinach and pepper in pot experiments. The inoculants are all positive for ammonia (NH3), catalase, hydrogen cyanide (HCN), phosphate solubilization and siderophore production. Among the inoculants, E. americana NWU59 is oxidase negative. P. putida NWU12 and P. fluorescence NWU65 are producing indole-3-acetic acid (IAA). The inoculants exhibit some PGPR activities and thus tested in the screen-house. Treatments are control (water) and the four inoculants. Rhizobacterial inoculants increase spinach (17.14% - 21.43%) and pepper (15.0% - 37.5%) plant heights over the control. Such inoculants have the potential of improving plant yield components and may be used as biofertilizer.

 

Key words: Ewingella americana; microbial inoculants; PGPR; Pseudomonas spp; screening; Vibrio fluvialis

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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