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    Author(s): Rebecka Mc Carthy; Magnus Löf; Emile S. Gardiner
    Date: 2017
    Source: Scandinavian Journal of Forest Research
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: Download Publication  (1.0 MB)

    Description

    Poplars (Populus spp.) are among the fastest growing trees raised in temperate regions of the world. Testing of newly developed cultivars informs assessment of potential planting stock for local environments. Initial rooting by nine poplar clones was tested in moist and saturated soil conditions during an 18-day greenhouse experiment. Clones responded differently to soil moisture, particularly in number of roots, root distribution, and root dry mass accumulation. About 73% of cuttings planted in moist soil produced roots from callus tissue, whereas only 1% of cuttings planted in saturated soil developed such roots. This drove root distribution towards the basal section of cuttings in moist soil, while in saturated soil roots were more evenly distributed among all three below-ground sections of cuttings. Roots originating from the basal section of cuttings planted in moist soil were longer than roots originating from apical and middle sections. Conversely, roots from the apical and middle sections of cuttings planted in saturated soil were longer than those originating from the basal section. Initial rooting among poplar clones established under two soil moisture regimes has implications for genotype deployment in the field, but long-term effects in the field are still unknown.

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    Citation

    Mc Carthy, Rebecka; Löf, Magnus; Gardiner, Emile S. 2017. Early root development of poplars ( Populus spp.) in relation to moist and saturated soil conditions . Scandinavian Journal of Forest Research. 7: 1-8. 9 p.  https://doi.org/10.1080/02827581.2017.1338751.

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    Keywords

    flooding, genotype, greenhouse experiment, regeneration, unrooted cutting

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https://www.fs.usda.gov/treesearch/pubs/54556