Effects of cork bark disease on cambial activity and secondary tissues in Abies lasiocarpa (Hook.) Nutt Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/r781wk163

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Abies lasiocarpa (Hook.) Nutt. (sub-alpine fir) trees of comparable vigor growing in eastern British Columbia were studied in order to determine the effects of cork bark disease on phellogen and vascular cambium activity. Diseased trees form hard deeply fissured rhytidome several inches thick over large areas of the bole when phellogens that produce large increments of phellem form successively deeper in cortical and secondary phloem tissues. Expansion of the secondary xylem cylinder causes cracks to form in the rhytidome. Non-infested trees and areas above and below infested sites may retain their superficial phellogen for nearly 200 years and possess relatively thin layers of cork with a smooth surface texture. Phellem cells from diseased areas contain numerous fungal hyphae. Those from adjacent smooth bark areas and healthy trees are filled with phenolic compounds but are of different dimensions and lack hyphae. In addition infested areas show denser wood, significantly shorter tracheids, sieve cells and fusiform initials, greater frequency of fusiform initials dividing by anticlinical partitions, higher rate of new fusiform initial loss, and greater number of vertical albuminous cells. New ray initials are formed from declining fusiform initials in control and diseased trees.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 8-bit Grayscale) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 5.0 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 2014-01-31T20:55:55Z (GMT) No. of bitstreams: 1 CarrJohnE1971.pdf: 5135856 bytes, checksum: 0d26e9b093ec410e8d38f594026506da (MD5)
  • description.provenance : Submitted by Lauren Kaysen (lkscannerosu@gmail.com) on 2014-01-26T22:26:41Z No. of bitstreams: 1 CarrJohnE1971.pdf: 5135856 bytes, checksum: 0d26e9b093ec410e8d38f594026506da (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2014-01-28T14:50:26Z (GMT) No. of bitstreams: 1 CarrJohnE1971.pdf: 5135856 bytes, checksum: 0d26e9b093ec410e8d38f594026506da (MD5)
  • description.provenance : Made available in DSpace on 2014-01-31T20:55:56Z (GMT). No. of bitstreams: 1 CarrJohnE1971.pdf: 5135856 bytes, checksum: 0d26e9b093ec410e8d38f594026506da (MD5) Previous issue date: 1971-01-16

Relationships

In Administrative Set:
Last modified: 08/17/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items