| dc.contributor.advisor | farmer, robert e. | |
| dc.contributor.author | shaotang, deng | |
| dc.date.accessioned | 2017-06-05t19:24:23z | |
| dc.date.available | 2017-06-05t19:24:23z | |
| dc.date.created | 1990 | |
| dc.date.issued | 1990 | |
| dc.identifier.uri | http://knowledgecommons.lakeheadu.ca/handle/2453/1734 | |
| dc.description.abstract | variation in syllepsis of tamarack and its relationship to juvenile height
growth in eleven tamarack provenances from northwestern ontario was
evaluated in a four-year-old clonal test planted at thunder bay, ontario.
significant provenance and clone-within-provenance effects were found for
height growth, and occurrence and degree of syllepsis. there existed a south-north
trend of decreasing provenance means for both height growth and
degree of syllepsis. degree of syllepsis was found to be moderately
correlated with current-year height growth. provenance broad-sense
heritability estimates ranged from 0.22 to 0.23 for 1989 final height and 1989
height growth respectively, and they ranged from 0.11 to 0.13 for number and
length of sylleptic branches on 1989 height growth. clonal broad-sense
heritability estimates ranged from 0.16 to 0.18 for 1989 final height and 1989
height growth respectively, and they ranged from 0.33 to 0.37 for number and
length of sylleptic branches on 1989 height growth. although syllepsis of
tamarack has high phenotypic plasticity, the potential for its development on
tamarack is heritable. syllepsis of tamarack may be an evolutionary
mechanism that permits tamarack trees to deal with environmental uncertainty. | |
| dc.language.iso | en_us | |
| dc.subject | tamarack variation | |
| dc.subject | tamarack growth | |
| dc.subject | shoots (botany) | |
| dc.subject | broad-sense heritability | |
| dc.subject | genetic correlation & variation | |
| dc.subject | sylleptic long shoot | |
| dc.title | variation of syllepsis in eleven tamarack [larix laricina (du roi) k. koch] provenances in northwestern ontario and its relation with height growth | |
| dc.type | thesis | |
| etd.degree.name | master of science | |
| etd.degree.level | master | |
| etd.degree.discipline | forestry and the forest environment | |
| etd.degree.grantor | 阿根廷vs墨西哥竞猜
| |
