Abstract/Details

Structure genetique des populations du Cronartium ribicola canadiennes

Et-Touil, Khalid.  Universite Laval (Canada). ProQuest Dissertations Publishing, 1998. MQ31716.

Abstract (summary)

Genetic diversity in white pine blister rust has been previously described to reside mostly within cankers and within white pine natural stands or plantations for the dicaryotic aecidial stage, with very little genetic differentiation between populations observed in Quebec and British Columbia. The aim of the current study was to extend such comparisons to white pine blister rust populations from five Eastern and one Western Canadian provinces. The analysis of gene diversity using Lynch and Milligan's corrections for the dominance of RAPD markers, indicated a low level (5.8%) of genetic differentiation among populations including populations from Newfoundland and Ontario, which are separated by 3000 Km. An analysis of molecular variance revealed that most (94%, p $<$ 0.001) of the genetic variability was present within populations (mostly plantations) with minor levels of genetic differentiation among regions (0.02%, p = 0.475) or among populations (6%, p $<$ 0.001). By contrast, a significant (28%, p $<$ 0.001) level of genetic differentiation was found between one population from British Columbia (west) and three Quebec populations (east). These results suggest that there is probably an important gene flow between homogenized populations of C. ribicola populations of C. ribicola in eastern Canada, but that there is a barrier to gene flow between eastern and western populations.

Indexing (details)


Subject
Genetics;
Forestry
Classification
0369: Genetics
0478: Forestry
Identifier / keyword
Biological sciences; French and English text
Title
Structure genetique des populations du Cronartium ribicola canadiennes
Author
Et-Touil, Khalid
Number of pages
64
Degree date
1998
School code
0726
Source
MAI 37/02M, Masters Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
978-0-612-31716-1
Advisor
Bernier, Louis
University/institution
Universite Laval (Canada)
University location
Canada
Degree
M.Sc.
Source type
Dissertation or Thesis
Language
English, French
Document type
Dissertation/Thesis
Dissertation/thesis number
MQ31716
ProQuest document ID
304472519
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
https://www.proquest.com/docview/304472519/abstract