生育空間の形状の違いと隣接する牧草の種類がエゾノギシギシの生育に及ぼす影響

DOI Web Site 被引用文献2件
  • 根本 正之
    東京農業大学富士畜産農場 現在, 農林水産省農業環境技術研究所
  • 是永 博基
    東京農業大学農学部畜産学科 現在, 静岡県立富士宮農業高等学校
  • 山中 良忠
    東京農業大学農学部畜産学科

書誌事項

タイトル別名
  • Influence of Gap Shape and Neighboring Forage Plants on the Growth of Rumex obtusifolius.
  • セイイク クウカン ノ ケイジョウ ノ チガイ ト リンセツスル ボクソウ ノ

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抄録

Growth form tactics (GFT) of Rumex obtusifolius grown in three types of gaps was examined in relation to its ecological control. Gaps differing in shape, round, oval and lanky oval, and 707cm2 in size (Fig. 1), were made in a single sowing stand of white clover (WC), orchardgrass (OG) and reed canarygrass (RCG). We defined GFT as the means for a plant to maintain and/or develop space for growth in the process from establishment to seed production based on morphological plasticity. The GFT of R. obtusifolius in each gap was analyzed compared with the GFT in control plants that were not influenced by neighbors.<br>The plant height of WC was lower than that of R. obtusifolius which grew with WC. The GFT of R. obtusifolius in the WC stand was very similar to that of the control plants (Fig. 2), while the plant height of OG and RCG was higher than that of R. obtusifolius grown with these forage grasses. R. obtusifolius both in OG and RCG stands showed the following GFT, i. e. elevation of outer leaves (Fig. 4) and elongation of the petioles (Fig. 7). The plants were eventually able to produce flower-buds under the most unfavorable conditions (Fig. 5).<br>The more the gap shape became round, the more the growth of R. obtusifolius was accelerated in the WC stand. However, growth of R. obtusifolius was markedly suppressed in the OG and RCG stands and differences in biomass caused by the gap shape were not evident (Fig. 5).

収録刊行物

  • 雑草研究

    雑草研究 37 (1), 41-50, 1992

    日本雑草学会

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