Genetic diversity of midwestern oat germplasm Cowen, Neil
dc.contributor.department Agronomy 2018-08-15T04:31:23.000 2020-07-02T06:03:03Z 2020-07-02T06:03:03Z Tue Jan 01 00:00:00 UTC 1985 1985
dc.description.abstract <p>Nine oat cultivars and experimental lines from four germplasm sources were crossed in a diallel mating design without reciprocals. F(,1) heterosis for grain yield was evaluated in two experiments, and 48 F(,2)-derived lines from each of the 36 matings were evaluated for bundle weight, grain yield, straw yield, harvest index, height, and heading date in two experiments. Number of transgressive segregates per trait and generalized genetic variance were calculated for each mating. Four measures of genetic distance between the parents were calculated: geneological distance, Euclidean distance based upon principal components, and the distance measures proposed by Hanson and Casas and Cervantes et al. The relationships between the four distance measures and the three types of breeding behavior were examined via correlation and regression. Correlations, where significant, were low to moderate. Regressions, where significant, were primarily linear with low R('2) values. The regression of heterosis on Euclidean distance in one experiment was quadratic with a high R('2) value. Using information from more than one distance measure improved the R('2) values for polynomial regression.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 8833
dc.identifier.contextkey 6323868
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/7834
dc.language.iso en
dc.source.bitstream archive/|||Sat Jan 15 01:54:47 UTC 2022
dc.subject.disciplines Genetics
dc.subject.keywords Agronomy
dc.subject.keywords Plant breeding and cytogenetics
dc.title Genetic diversity of midwestern oat germplasm
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
relation.isOrgUnitOfPublication fdd5c06c-bdbe-469c-a38e-51e664fece7a dissertation Doctor of Philosophy
Original bundle
Now showing 1 - 1 of 1
1.79 MB
Adobe Portable Document Format