Effect of Support on the Growth of a Woody Vine, Wisteria floribunda DC. (Leguminosae) :

NDLデジタルコレクション 被引用文献3件 参考文献14件
  • Sakai,Atsushi
    Shikoku Research Center, Forestry and Forest Products Research Institute
  • Suzuki,Wajirou
    Forest Environment Division, Forestry and Forest Products Research Institute

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Seedling of Wisteria floribunda, which belongs to the twiner type of climbing plants, were planted in nursery and the effect of support on the growth of the seedlings was tested. The seedlings were grown with 240 cm-height and 120 cm-height supports (the culms of a dwarf bamboo), and without support. Positive effect of the supports and its length were observed for stem length of W. floribunda at the end of the growing season. The positive effect of support was also observed for total dry weight. Total dry weight with 240 cm-height support reached more than the double of the seedlings without support. These effects of the support were attributed to die-back behavior of the twining stem, which detached from the support or did not encounter the support. Diameter of the stems without support showed a rapid decrease toward the stem tip, while that with support were relatively constant when they were twining around the support. The existence of the support also affected the dry matter allocation in this species; supported seedlings allocated larger proportion of biomass to current-year stems than unsupported seedlings, although the allocation to the roots was smaller in the supported treatments. Support availability may be critical for the establishment and further growth of the seedlings of W. floribunda which regenerate at the forest edge and canopy gaps.

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