Evaluation and selection for traits related to lodging resistance in barley (Hordeum vulgare L.)

dc.contributor.advisorFalk, Duane E.
dc.contributor.authorBjornsson, Ingvar
dc.date.accessioned2020-08-24T15:46:07Z
dc.date.available2020-08-24T15:46:07Z
dc.date.copyright2003
dc.degree.departmentDepartment of Crop Scienceen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.description.abstractLodging in barley, due to loss of root anchorage or stem breakage, causes yield losses, lowered grain quality and reduced harvesting efficiency. Lodging is a quantitative trait, highly affected by environment, and has generally a low heritability. Selection for a combination of easily measurable traits related to lodging is, therefore, a much more feasible option than direct selection. This study examined the relationship among various culm traits and field lodging. Recurrent selection for culm breaking resistance was also applied to two breeding populations. Peduncle breaking resistance was positively correlated with peduncle weight, diameter, weight/length and weight/length*diameter. Lodging was reduced by shorter peduncles and increased peduncle diameter, peduncle weight/length, peduncle weight/length*diameter and peduncle breaking resistance. Heritability was moderate for most traits. The results support the use of recurrent selection as an effective breeding method to improve traits affecting straw strength, ultimately, leading to increased stem lodging resistance in barley.en_US
dc.identifier.urihttps://hdl.handle.net/10214/20010
dc.language.isoen
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectBarleyen_US
dc.subjectLodgingen_US
dc.subjectRoot anchorageen_US
dc.subjectStem breakageen_US
dc.subjectTraitsen_US
dc.titleEvaluation and selection for traits related to lodging resistance in barley (Hordeum vulgare L.)en_US
dc.typeThesisen_US

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