Possible association between dwarfing genes Rht₁ and Rht₂ and the reaction to Septoria tritici blotch in winter wheat (Triticum aestivum L. em Thell) Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/7w62fd557

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Four isogenic lines possessing different combinations of height reducing genes Rht₁ and Rht₂ from 'Norin 10' were crossed to a short stature, early maturing, septoria susceptible cultivar identified as the 'Tibet Dwarf'. The isogenic lines originated from the backcross population of 'Itana'/3/'Norin 10'/'Brevor 14'//6*'Itana'. Parents, F₁ and F₂ generations provided the experimental materials upon which observations were made. Differences in reaction to septoria tritici blotch were observed with a specific height reducing gene. When the gene Rht₂ was present either as a isoline or in the progeny a higher degree of resistance was found. The most susceptible disease reaction was measured in the presence of Rht₁ gene. Associations, as determined by phenotypic and genetic correlations were detected between septoria tritici blotch resistance and tall stature, late heading and maturity dates. Short stature, early heading and maturing plants with acceptable levels of resistance were identified in the F₂ population when Rht₂ was present. Either due to some biological limitation or perhaps genetic linkages it will be necessary for wheat breeders to select the appropriate dwarfing source and to grow large F₂ populations to insure obtaining the desired genotypes.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-07-16T18:05:26Z (GMT) No. of bitstreams: 1 BaltazarMontesBaltazar1988.pdf: 527254 bytes, checksum: e573e3adf808aabc55f6d4d025ec9d44 (MD5)
  • description.provenance : Submitted by Katy Davis (kdscannerosu@gmail.com) on 2013-06-14T18:31:46Z No. of bitstreams: 1 BaltazarMontesBaltazar1988.pdf: 527254 bytes, checksum: e573e3adf808aabc55f6d4d025ec9d44 (MD5)
  • description.provenance : Made available in DSpace on 2013-07-16T18:05:26Z (GMT). No. of bitstreams: 1 BaltazarMontesBaltazar1988.pdf: 527254 bytes, checksum: e573e3adf808aabc55f6d4d025ec9d44 (MD5) Previous issue date: 1987-07-08
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-06-17T16:20:41Z (GMT) No. of bitstreams: 1 BaltazarMontesBaltazar1988.pdf: 527254 bytes, checksum: e573e3adf808aabc55f6d4d025ec9d44 (MD5)

Relationships

In Administrative Set:
Last modified: 10/19/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items