The breeding of disease-resistant smooth-awned varieties of barley

Download
  1. Get@NRC: The breeding of disease-resistant smooth-awned varieties of barley (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1139/cjr35c-023
AuthorSearch for: ; Search for:
TypeArticle
Journal titleCanadian Journal of Research
ISSN0366-6581
Volume13c
Issue5
Pages315338
Subjectdisease-resistance; barley varieties; genetic inheritance
AbstractBarbing of awn, carliness of heading, height of plant and disease reaction were investigated in reciprocal crosses between Glabron and Trebi. Barbing of awn was also studied in reciprocal crosses between Velvet and Trebi. Rough-, intermediate- and smooth-awned plants were obtained in the ratio of 12:3:1 in the F2. F3 studies confirmed the F2 findings that two factors, explained on the basis of epistasis, governed barbing of awns. The inheritance of the characters, earliness of heading and height of plant could best be explained by assuming polymeric factors. Both these characters were greatly influenced by the environment. In the genetic studies of stripe reaction Trebi proved highly resistant, and Glabron moderately resistant, while the progeny of the cross between them generally resembled the Trebi parent. No evidence of transgressive reaction for greater resistance was shown. The results indicate that the method of floral inoculation used was not altogether satisfactory. A small positive correlation was found between percentage stripe infection and mean height of plant, whereas no significant correlation was disclosed between stripe reaction and either mean number of days from emergence to heading or barbing of awns. A high degree of association was found between mean height of plant and mean number of days from emergence to heading. The status of the loose smut disease of barley in relation to the breeding of new resistant smooth-awned varieties is discussed.
Publication date
LanguageEnglish
Peer reviewedYes
NRC number642
NPARC number21273593
Export citationExport as RIS
Report a correctionReport a correction
Record identifier88772795-f6db-45eb-a9f1-35952d97ceb8
Record created2015-01-16
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)
Date modified: