Screening Cotoneaster for Resistance to Fire Blight by Artificial Inoculation Public Deposited

http://ir.library.oregonstate.edu/concern/articles/1z40kv748

This study is from a thesis submitted by J.J.R. as partial fulfillment of the degree of M.S.

This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Society for Horticultural Science and can be found at:  http://hortsci.ashspublications.org/

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Cotoneaster is a genus of ornamental landscape plants commonly affected by fire blight. Fire blight is a disease caused by the bacterial pathogen, Erwinia amylovora (Burrill) Winslow et al. that attacks a wide range of taxa in the apple subfamily (Maloideae; Rosaceae). To assess susceptibility of species and identify potential sources of resistance, we inoculated 52 taxa of Cotoneaster with E. amylovora. Disease severity was scored by percent shoot necrosis (lesion length/ total shoot length). Disease screenings were conducted over two years and varying levels of susceptibility were observed. Some taxa were highly susceptible to fire blight and the disease resulted in whole plant mortality (C. rhytidophyllus Rehder & E.H. Wilson, C. rugosus E. Pritzel ex Diels, and C. wardii W.W. Smith). Other taxa repeatedly exhibited moderate to high levels of disease resistance (C. arbusculus G. Klotz, C. chungtinensis (T.T. Yu) J. Fryer & B. Hylmö, C. delsianus E. Pritzel var. delsianus, C. sikangensis Flinck & B. Hylmö, C. simonsii Baker, and C. splendens Flinck & Hylmö). Ongoing studies are being conducted to determine if taxa with high levels of resistance under artificial inoculation will exhibit high levels of resistance in the field under natural disease pressure. Identifying sources of disease resistance will be useful for breeding programs to increase tolerance of these landscape plants with desirable horticultural characteristics to fire blight.
Resource Type
Date Available
Date Issued
Citation
  • Rothleutner, J. J., Contreras, R. N., Stockwell, V. O., & Owen, J. S. (2014). Screening Cotoneaster for Resistance to Fire Blight by Artificial Inoculation. HortScience, 49(12), 1480-1485.
Series
Keyword
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Deanne Bruner(deanne.bruner@oregonstate.edu) on 2015-06-08T22:38:37Z (GMT) No. of bitstreams: 1 ContrerasRyanHorticultureScreeningCotoneasterForResistanceToFireBlight.pdf: 327344 bytes, checksum: 16ff90e2d985869599a65bbf81b9773a (MD5)
  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2015-06-08T22:37:48Z No. of bitstreams: 1 ContrerasRyanHorticultureScreeningCotoneasterForResistanceToFireBlight.pdf: 327344 bytes, checksum: 16ff90e2d985869599a65bbf81b9773a (MD5)
  • description.provenance : Made available in DSpace on 2015-06-08T22:38:37Z (GMT). No. of bitstreams: 1 ContrerasRyanHorticultureScreeningCotoneasterForResistanceToFireBlight.pdf: 327344 bytes, checksum: 16ff90e2d985869599a65bbf81b9773a (MD5) Previous issue date: 2014-12

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items