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Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/1755
Title: Plant growth promoting rhizhobacteria (PGPR)-mediated root proliferation in black pepper (Piper nigrum L.) as evidenced through GS Root software
Authors: PAUL, DIBY
SARMA, Y R
Keywords: Pseudomonas fluorescens
black pepper
root proliferation
plant growth hormones
Issue Date: Aug-2006
Citation: Archives of Phytopathology and Plant Protection August 2006; 39(4): 311 – 314
Abstract: Pseudomonas fluorescens strains which are proven biocontrol agents in black pepper against foot rot (caused by Phytophthora capsici ) were also found to enhance root proliferation and fibre root production. Experiments conducted in the greenhouse with five efficient strains of P. fluorescens (IISR-6, IISR-8, IISR-11, IISR-13 and IISR-51) showed that the bacterial strains could significantly increase the root biomass of the plants (30 – 135%). Parameters for total root length, root area and root tips were estimated by scanning the entire root system and analysis through GS Root1 software (PP systems, Winterstreet, USA). All the strains increased the root length in the treated plants (12 – 127%), the highest being with IISR-6, which was on a par with IISR-11 and IISR-51. A similar trend was observed with the total root area after bacterization (43 – 200%). The P. fluorescens treated plants had a higher number of feeder roots as evidenced by the increased number of root tips (82 – 137%). The enhanced growth parameters upon root bacterization could be corroborated with the production of the plant growth hormones IAA & GA by the bacterial strains and their P-solubilization potential.
URI: http://hdl.handle.net/123456789/1755
Appears in Collections:CROP IMPROVEMENT

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