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Seed Zone Delineation for Jack Pine in the Former Northwest Region of Ontario Using Short-term Testing and Geographic Information Systems

W. H. ParkerAnnette Van NiejenhuisGreat Lakes Forestry CentreNorthern Forestry Program (Canada)

出版	Great Lakes Forestry Centre, 1996
主題	Technology & Engineering / Agriculture / Forestry
ISBN	06622495429780662249542
URL	http://books.google.com.hk/books?id=hrdHAQAAMAAJ&hl=&source=gbs_api

註釋

This report describes a study conducted to obtain a better understanding of the pattern of adaptive variation of jack pine that would improve existing seed transfer guidelines. A short-term provenance test was conducted for 102 seed sources grown in common environments at a greenhouse for one season and at three field trials for two growing seasons. In the study, 32 biological variables were determined for each seed source, including seedling heights, needle flushing dates, timing of shoot elongation, and relative freezing damage. Multiple regressions were run for each variable against 12 climatic variables interpolated for each of the seed sources using a geographic information system (GIS). Principal components analysis summarized the main components of variation. Regression equations were used to model patterns of adaptive variation, and these patterns were graphically reproduced as contour maps using GIS. A series of focal point seed zone maps were then produced by GIS intersection of the regression-based contour maps. Based on these maps, a summary of the pattern of adaptive variation in jack pine was used to produce a recommendation for breeding zone boundaries.