Emergence-promoting rhizobacteria

Details Emergence-promoting rhizobacteria Emergence-promoting rhizobacteria

C - Chemistry, Metallurgy

12

N

71/50, 71/4.5, 1

C12N 1/20 (2006.01) A01C 1/00 (2006.01) A01C 1/06 (2006.01) A01N 63/00 (2006.01)

Patent

CA 1335363

A group of psychrotrophic bacteria has been discovered, isolated and identified, which increases emergence of seedlings at cold soil temperatures. The group has been termed "EPR" (emergence-promoting rhizobacteria). Test bacterial strains were isolated either from roots of soybean (Glycine max) and canola (rapeseed) (Brassica campestris) grown in soils collected from the Northwest Territories or from roots of native plants collected in the N.W.T. Strains which demonstrated growth at 4°C and growth in the presence of seed exudates were examined for seedling emergence-promoting activity in a field soil: perlite mixture. Canola emergence assays were conducted at a constant 9°C and soybean at 14°C. A total of 110 strains were tested on canola and 277 on soybean. Four strains on canola and 24 strains on soybean increased seedling emergence rates in multiple repeating experiments and were, therefore, deemed EPR strains. EPR strains identified here include Serratia liquefaciens, Pseudomonas putida, P. fluorescens, Enterobacter aerogenes and Beijerinckia indica.

486217

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