Cyst nematode resistance and seed yield of soybean lines derived from SS97-6946

dc.contributor.advisor Walter R. Fehr Doonan, Gregory
dc.contributor.department Agronomy 2018-08-12T01:07:58.000 2020-06-30T02:29:03Z 2020-06-30T02:29:03Z Thu Jan 01 00:00:00 UTC 2009 2013-06-05 2009-01-01
dc.description.abstract <p>New sources of resistance to the soybean cyst nematode (SCN) (<i>Heterodera glycines</i> Ichinohe) would be useful for soybean [<i>Glycine max</i> (L.) Merr.] cultivar development. The objective of this study was to determine the relationship between SCN resistance and seed yield for a new source of SCN resistance, SS97-6946, developed by the Univ. of Missouri-Columbia. F5-derived lines were developed from the cross of SS97-6946 x S27-T7, a SCN-susceptible cultivar developed by Syngenta. Nine sets of 32 F5:8 lines each were evaluated for yield in replicated tests at five Midwest locations during 2007. The lines were evaluated for resistance to four HG types of SCN populations in growth rooms by determining their female index, which was the number of cysts on the roots of a line relative to a SCN-susceptible cultivar. There were six out of the 36 combinations of sets and HG types that had significant negative phenotypic correlations between yields of the lines and their female indexes. This indicated that the lines with the highest yield tended to have lower female indexes and greater SCN resistance, and that SS97-6946 would be a useful source of SCN resistance for soybean cultivar development.</p>
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dc.identifier archive/
dc.identifier.articleid 1537
dc.identifier.contextkey 2802565
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/10519
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 18:22:47 UTC 2022
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.keywords SCN
dc.subject.keywords Soybean
dc.subject.keywords Yield
dc.title Cyst nematode resistance and seed yield of soybean lines derived from SS97-6946
dc.type article
dc.type.genre thesis
dspace.entity.type Publication
relation.isOrgUnitOfPublication fdd5c06c-bdbe-469c-a38e-51e664fece7a thesis Master of Science
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