Plasticity of Root Morphology of Pterocarya rhoifolia Seedlings in Relation to the Soil Substrates: Comparison with Carpinus laxiflora and Carpinus tschonoskii.

Ito H., Takeuchi A., Ito S., Nakao T.

doi:10.4005/jjfs.90.145

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Other Title

渓畔域の土壌基質に対するサワグルミ実生の根系の形態の変化―アカシデおよびイヌシデとの比較―
ケイハンイキノドジョウキシツニタイスルサワグルミミショウノコンケイノケイタイノヘンカアカシデオヨビイヌシデトノヒカク
Comparison with <I>Carpinus laxiflora</I> and <I>Carpinus tschonoskii</I>
—アカシデおよびイヌシデとの比較—

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Description

We aimed to clarify 1) whether the roots of current-year seedlings of riparian component species have developed acclimation to soil substrate particularly in the riparian zone, and 2) if the acclimation affects the seedling survival rate. To address these questions, we investigated root morphology of Pterocarya rhoifolia seedlings and the survival rate in different edaphic habitats (sandy soil and rock substrate) in the riparian zone located in a deciduous broadleaved forest in the cool-temperate region, comparing them with those of Carpinus laxiflora and C. tschonoskii established in the same site. The longest length of lateral root, the longest root length (the longest distance from the base of root to root apex) and ratio of the longest length of lateral-root to the tap-root length of P. rhoifolia seedlings in the rock substrate were higher than those in the other species or in the other site. This indicated that P. rhoifolia seedlings have a higher ability to develop the lateral root acclimating to rock substrate than the other species. The survival rate of P. rhoifolia seedlings also was higher in the rock substrate, suggesting that the acclimation of root morphology to rock substrate encourages their establishment and the survival of this species in the riparian zone.

Journal

Journal of the Japanese Forest Society

Journal of the Japanese Forest Society 90 (3), 145-150, 2008

THE JAPANESE FORESTRY SOCIETY

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