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Abstract Detail


Soolanayakanahally, Raju [1], Azam, Md. Shofiul [1], Liao, Limin [1], Guy, Robert D. [1].

Natural variation in seasonal growth traits and ecophysiology of Populus balsamifera based on provenance tests.

When plants of different geographic origin are grown together under the same conditions, phenotypic variation is expected to reflect underlying genotypic variation important for adaptation to local environmental conditions. To analyze such natural phenotypic and genetic variation, the Agriculture Canada Balsam Poplar (AgCanBaP) range-wide collection was established. This collection consists of 15 trees from each of 43 different populations across North America, covering different latitudes and longitudes. These populations were planted in two common gardens: Vancouver BC (49.12° N) and Indian Head SK (50.25° N). Data related to bud phenology and growth traits, such as plant height and leaf area duration, were collected from both sites. Date of bud set showed strong clinal variation with latitude in both field trails, whereas date of bud flush was not that strong. The AgCanBaP collection also demonstrates problems associated with local adaptations, particularly in phenology. Local adaptation complicates establishment of common gardens; trees from the far north grew very poorly in the south where the optimal photoperiod for growth is never reached. The AgCanBaP collection presents promising material for identification of genes controlling adaptive traits using association mapping.

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1 - University of British Columbia, Forest Sciences, 3041 - 2424 Main Mall, Vancouver, BC, V6T 1Z4, Canada

Populus balsamifera
common garden study
adaptation to climate

Presentation Type: Poster:Posters for Topics
Session: P
Location: Ball Room & Party Room/SUB
Date: Monday, July 28th, 2008
Time: 12:30 PM
Number: PEP004
Abstract ID:890

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