Symbiotic efficiency of Bradyrhizobium japonicum for development of a commercial soybean inoculant for western Canada

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dc.contributor.advisor Vessey, Joseph Kevin
dc.coverage.spatial Canada
dc.creator Kavanagh, Vanessa 2011-06-14T17:36:29Z 2011-06-14T17:36:29Z 2007
dc.identifier.other QR51 K38 2007
dc.description xi, 94 leaves : ill., map ; 29 cm. en_CA
dc.description Includes abstract.
dc.description Includes bibliographical references (leaves 79-89).
dc.description.abstract Soybean production has increased substantially in western Canada in recent years. Current soybean inoculants ( Bradyrhizobium japonicum ) have not performed the same in western Canada as they have in other regions. B. japonicum exhibit genetic change in soil over time and may result in novel rhizobial lines capable of performing better than the original introduced strain. Greenhouse experiments performed on 60 isolates of B. japonicum from previously inoculated fields assessed symbiotic efficiency - ability to induce nodulation and fix nitrogen - compared to commercial inoculants 532C and USDA110. A pre-screening stage using one cultivar selected 10 isolates for second stage screening. In second screening using three cultivars, inoculated treatments had higher biomass and tissue nitrogen contents than nitrogen-fertilized and untreated controls confirming the need for inoculation in virgin soils. Five isolates (2-37, 2-38, 3-49, 3-50 & 3-57) resulted in high plant tissue nitrogen contents and biomass and should be tested in a crop setting. en_CA
dc.description.provenance Submitted by Dianne MacPhee ( on 2011-06-14T17:36:29Z No. of bitstreams: 0 en
dc.description.provenance Made available in DSpace on 2011-06-14T17:36:29Z (GMT). No. of bitstreams: 0 Previous issue date: 2007 en
dc.language.iso en en_CA
dc.publisher Halifax, N.S. : Saint Mary's University en_CA
dc.subject.lcc QR51
dc.subject.lcsh Microbial inoculants
dc.subject.lcsh Legumes -- Inoculation -- Canada, Western
dc.subject.lcsh Soybean
dc.subject.lcsh Rhizobium
dc.title Symbiotic efficiency of Bradyrhizobium japonicum for development of a commercial soybean inoculant for western Canada en_CA
dc.type Text en_CA Master of Science in Applied Science Masters Biology Saint Mary's University (Halifax, N.S.)
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