Assessment of resistance and inheritance to Barley Yellow Dwarf Virus disease (BYDV) in five wheat cultivars (Triticum aestivum L.) Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/8p58pg492

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Barley Yellow Dwarf Virus (BYDV) is a major disease of wheat. Unfortunately, unlike barley where the Yd2 gene provides adequate levels of resistance, the situation in wheat is more complex. This study was designed to provide information regarding: 1) evaluation of methods of measuring resistance among selected cultivars; 2) identification of sources of resistance; and 3) determination of the nature of inheritance controlling BYDV resistance. Five wheat cultivars with possible different levels of resistance to BYDV and the resulting F₁, F₂, F₃, BC-1 and BC-2 populations provided the experimental material. An assessment of the damage inflicted by aphids feeding per se and aphid plus virus on the five cultivars was determined under greenhouse conditions. Cultivars and the resulting progeny were grown in the field to confirm the greenhouse findings and to determine nature of inheritance. Aphid feeding per se did not influence most cultivars other than for plant height involving Yamhill and Anza. Despite the lack of visual symptoms, BYDV did significantly influence the six parameters measured with the cultivars Stephens and Riebesel exhibiting the greatest reduction. No immunity was observed for any of the cultivars tested. Under field conditions Stephens, followed by Riebesel, were the most susceptible cultivars with Yamhill, Novi Sad and Anza being the most resistant based on the parameters measured. The inheritance pattern appeared to be quantitative with both additive and nonadditive genetic variability involved in controlling resistance. This was verified by the transgressive segregation noted in F₂ and F₃ generations and the significant General and Specific Combining Ability estimates for the BYDV score. Due to the quantitative nature of BYDV resistance and the different genetic factors observed for the cultivars in this study, a recurrent selection program should result in higher levels of resistance than exhibited by the cultivars employed in this study. Also, the use of a visual BYDV score appears to be an effective means of identifying resistant parents.
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 Capture Perfect 3.0.82 on a Canon DR-9080C 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 Patricia Black(patricia.black@oregonstate.edu) on 2013-07-19T17:59:54Z (GMT) No. of bitstreams: 1 TolaJaime1984.pdf: 1873367 bytes, checksum: 704ff5ed9ee28a6d5a81a920d19bee29 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-07-18T15:00:20Z (GMT) No. of bitstreams: 1 TolaJaime1984.pdf: 1873367 bytes, checksum: 704ff5ed9ee28a6d5a81a920d19bee29 (MD5)
  • description.provenance : Made available in DSpace on 2013-07-19T17:59:54Z (GMT). No. of bitstreams: 1 TolaJaime1984.pdf: 1873367 bytes, checksum: 704ff5ed9ee28a6d5a81a920d19bee29 (MD5) Previous issue date: 1983-05-11
  • description.provenance : Submitted by Kevin Martin (martikev@onid.orst.edu) on 2013-07-17T21:43:11Z No. of bitstreams: 1 TolaJaime1984.pdf: 1873367 bytes, checksum: 704ff5ed9ee28a6d5a81a920d19bee29 (MD5)

Relationships

In Administrative Set:
Last modified: 08/04/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items