Biological control of onion pink root using antagonistic strains of bacteria
Issue Date
12-2017
Abstract
Pink root disease of onion is one of the most destructive causes of yield loss in the crop field. Some 380 strains of bacteria were recovered from onion's rhizosphere and purified on NA media. Out of these strains, 31 exhibited high antagonistic effects as shown in the dual-culture tests. Antagonistic potential of the selected bacteria were evaluated by their ability to produce antibiotics, volatile metabolites and siderophore and were selected for greenhouse experiments. The segregated antagonistic bacterias belong to the 5 species namely Bacillus laterosporus-, B. subtilis, Pseudomonas fluorescent, P. patida bv. B and P. aeroginosa. Biocontrol test on onion bulbs was performed by soil drenching with the factors arranged in a completely randomized design with 31 treatments and 3 replicates. P. fluorescent biovl MM- 19 and P. fluorescent biov. IV MM-252 showed the greatest effect on reduction of disease severity and growth parameters.
Source or Periodical Title
Philippine Journal of Crop Science
ISSN
0115-463x
Volume
42
Issue
3
Page
71-78
Document Type
Article
Frequency
tri-quarterly
Physical Description
tables, graphs, pictures
Language
English
Recommended Citation
Rahanandeh, Hadi; Moshayedi, Mahsa; and Hamzeh, Alireza, "Biological control of onion pink root using antagonistic strains of bacteria" (2017). Journal Article. 5280.
https://www.ukdr.uplb.edu.ph/journal-articles/5280