Comparison of growth characteristics between clones of Imperate cylindrica (L.) Beauv. for a revegetation plant on the face of slopes

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  • 日本産　チガヤ（Ｉｍｐｅｒａｔａ　ｃｙｌｉｎｄｒｉｃａ（Ｌ．）Ｂｅａｕｖ．）ののり面緑化植物としての特性の系統間比較
  • ニホンサン チガヤ Imperata cylindrica L Beauv ノ ノリ メン リョッカ ショクブツ ト シテ ノ トクセイ ノ ケイトウ カン ヒカク

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Abstract

Imperata cylindrica is recognized as a desirable natural green cover on the face of slopes. As this species has been known to have wide intraspecific variation both morphologically and ecologically, the study was carried out to compare clones with suitable characteristics to be a revegetation plant. Twenty-two clones in our collection from various locations and habitats across Japan were used. Plants were grown in pots and 6 characters, leaf number, plant height, plant length/plant height ratio, amount of underground parts, and sprouting/rooting ability and dry tolerance of rhizome fragments, were evaluated. Although there was no clone that showed high values in all characters in evaluation, some clones were found to have suitable characteristics in shoot growth or reproductive ability of rhizomes. The fact suggested a possibility of selection of clones of Imperata cylindrica desirable for the green cover material.

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