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Systematic Screening Strategies for Identifying Elite Plant Growth Promoting Rhizobacteria for Coconut (Cocos nucifera L.)

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Title Systematic Screening Strategies for Identifying Elite Plant Growth Promoting Rhizobacteria for Coconut (Cocos nucifera L.)
Not Available
 
Creator Priya George
Alka Gupta
Murali Gopal
Litty Thomas
George V. Thomas
 
Subject screening PGPR
fluorescent
pseudomonads
bacillus spp
coconut
plant growth promoting traits
 
Description Not Available
Elite strains of plant growth promoting rhizobacteria were proficiently selected based on
the strategic screening approaches. These included in vitro testing for plant growth
promotion attributes, seedling bioassay under controlled and under greenhouse conditions.
A total of 483 morphologically distinct bacteria [156 rhizosphere fluorescent
Pseudomonas spp. (RSF), 206 rhizosphere Bacillus spp. (RSB) and 121 endophytic
Bacillus spp. (EB)] were isolated from the roots and rhizosphere soil of coconut palms
growing in different states of India. These were characterized for various plant growth
promotion traits that have direct and indirect effects on plant growth. All the isolates were
assessed and given scores based on their in vitro assay of plant growth promotion traits. A
total of 129 isolates, which secured more than 11 points, were further selected for seedling
bioassay under controlled conditions. Greenhouse trial was conducted with 72 isolates and
results further proved the efficiency of screened isolates for plant growth promotion. This
strategic screening helped in shortlisting a total of 20 best PGPR (7 fluorescent
Pseudomonas spp. and 13 Bacillus spp.) out of 483 isolates. The present study clearly
showed that the rhizosphere of coconut palms harbour varied populations of fluorescent
pseudomonads and Bacillus spp. that possess diverse plant growth promotion properties,
and some of the efficient ones could be developed in to bioinoculants for use in coconut
nurseries and plantations.
Not Available
 
Date 2019-11-01T09:28:16Z
2019-11-01T09:28:16Z
2018-01-01
 
Type Article
 
Identifier Int.J.Curr.Microbiol.App.Sci (2018) 7(5): 1051-1074
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/24256
 
Language English
 
Relation Not Available;
 
Publisher Not Available