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https://knowledgecommons.lakeheadu.ca/handle/2453/2472
Title: | Genetic variation of wood properties in tamarack (Larix laricina (Du Roi) K. Koch) |
Authors: | Dong, Yusheng |
Keywords: | Tamarack Genetics;Larix laricina;Broad-sense heritability |
Issue Date: | 1996 |
Abstract: | Genetic variation of tracheid length, specific gravity, latewood percentage, height growth, and ring width among and within four provenances of tamarack (Larix laricina (Du Roi) K. Koch) was investigated in a ten-year-old provenance test that was planted in Thunder Bay, Ontario. Significant genetic variation of tracheid length, height growth, and ring width was found among provenances and among clones within provenances. A south-north trend of decreasing provenance means with increasing latitude was found for tracheid length, height growth, and ring width. Fastgrowing provenances generally had longer tracheids than slow-growing provenances. Variation of specific gravity and latewood percentage was not significant among provenances or among clones within provenances. Variance components and broad-sense heritabilities of wood properties due to clones within provenances were larger than those due to provenances. However, variance components and broad-sense heritabilities of growth characteristics due to clones within provenances were smaller than those due to provenances. Positive genetic correlations (r=0.03 to 0.88) between wood properties and growth characteristics were detected, and the possibility of improvement of both wood properties and wood volume in tamarack was discussed. |
URI: | http://knowledgecommons.lakeheadu.ca/handle/2453/2472 |
metadata.etd.degree.discipline: | Forestry and the Forest Environment |
metadata.etd.degree.name: | Master of Science |
metadata.etd.degree.level: | Master |
metadata.dc.contributor.advisor: | Farmer, Robert E. |
Appears in Collections: | Retrospective theses |
Files in This Item:
File | Description | Size | Format | |
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DongY1996m-1b.pdf | 4.32 MB | Adobe PDF | ![]() View/Open |
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