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    Author(s): Susan Kloss; Joe R. McBride
    Date: 2002
    Source: In: Standiford, Richard B., et al, tech. editor. Proceedings of the Fifth Symposium on Oak Woodlands: Oaks in California's Challenging Landscape. Gen. Tech. Rep. PSW-GTR-184, Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 405-415
    Publication Series: General Technical Report (GTR)
    Station: Pacific Southwest Research Station
    PDF: View PDF  (580 KB)

    Description

    This study characterized the distribution of geographic variation in water relations traits for six populations of California blue oak along a precipitation gradient (two each from high, medium and low precipitation environments). Acorns were collected from each population, germinated and the resulting seedlings were experimentally treated with three different watering regimes in a greenhouse experiment. There were significant among-population differences in growth and biomass production characteristics in the seedlings. Significant among-treatment differences indicated at least low levels of plasticity, although there were no treatment x population interactions. Implications are that seed source zone maps should be used by restorationists until we have more information that coadapted or regional gene complexes do not exist.

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    Citation

    Kloss, Susan; McBride, Joe R. 2002. Geographic patterns of variation in biomass production of California blue oak seedlings as a response to water availability. In: Standiford, Richard B., et al, tech. editor. Proceedings of the Fifth Symposium on Oak Woodlands: Oaks in California''s Challenging Landscape. Gen. Tech. Rep. PSW-GTR-184, Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 405-415

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