Evaluation of Avena sativa L./A. fatua L. crosses
1982
Loading...
View/Download File
Persistent link to this item
Statistics
View StatisticsJournal Title
Journal ISSN
Volume Title
Title
Evaluation of Avena sativa L./A. fatua L. crosses
Authors
Published Date
1982
Publisher
Type
Thesis or Dissertation
Abstract
The use of micronuclei frequency/microspore quartet (MF) has been proposed to indicate relative reduction in chromosome homology
among interspecific oat (Avena L.) hybrids. Hybrids with lower MF presumably undergo greater genetic recombination, providing greater opportunity for breaking linkages contributing to association, or coherence, of desirable and undesirable characters in progenies.
Progeny lines from eight A. sativa L./A. fatua L. crosses were evaluated with parents and check cultivars to determine whether A.
fatua might contribute useful variation for improving agronomic and grain quality characters in cultivated oats and whether a relationship exists between MF and character coherence.
Differential emergence among progeny lines due to seed dormancy accounted for some variability in grain yield in 1980. In
1981, five crosses had population means for grain yield equal to their A. sativa parents. All crosses contained lines that equalled or exceeded A. sativa parents or check cultivars for grain yield.
High groat oil in A. fatua parents and progenies indicated A. fatua could be used to increase oil levels in cultivated oats.
Though parents did not differ from groat protein all crosses had variation among lines, indicating fatua may have different genes than A. sativa.
Progeny lines with dark seed color or shattering habit were higher for harvest index, earlier, shorter, and lower in groat oil, groat protein and groat percentage than light-colored or nonshattering lines.
Character coherence was examined in progenies from four A. sativa/L. fatua hybrids with high MF and four hybrids with low MF.
The degree of coherence of seed disarticulation and color with
quantitative traits that distinguish the parental species was not related to differences in MF among these crosses. Likewise, the degree of coherence among the quantitative characters studied, as
measured by coefficients of concordance, was not associated with differences in MF among the crosses.
The analyses used could detect only character coherence and not genetic recombination, per se. Accurate genotypic measurements of characters controlled by genes on potentially abnormally pairing
chromosomes are necessary to determine a relationship of MF with recombination and character coherence.
Keywords
Description
Dissertation completed at the University of Minnesota, 1982
Related to
Replaces
License
Collections
Series/Report Number
Funding information
Isbn identifier
Doi identifier
Previously Published Citation
Suggested citation
Luby, James J.. (1982). Evaluation of Avena sativa L./A. fatua L. crosses. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/162864.
Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.