オオバナノエンレイソウの減数分裂におよぼす水浸処理の効果

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書誌事項

タイトル別名
  • The Effects of Water-immersion on the Meiotic Division and Chromosomes in <i>Trillium kamtschaticum</i>
  • オオバナノエンレイソウ ノ ゲンスウ ブンレツ ニ オヨボス スイシン ショリ ノ コウカ
  • The Effects of Water-immersion on the Meiotic Division and Chromosomes in Trillium kamtschaticum

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抄録

The flower buds of Trillium kamtschaticum, while undergoing meiotic late-prophase or metaphase I, were immersed into tap-water either at 7-12°or 25°for 24, 48 and 72 hours. In the present experiment the whole body of the plant was completely immersed after anthers were laid as bare as possible without removal of sepals and petals. Cytological fixations of PMCs were made at the ends of the treatment and 24 hours intervals thereafter.<br>The results showed that (1) under the treatment of water-immersion at both 7-12° and 25°the meiotic division did not proceed, accompanying a phenomenon of coalescence of chromosomes; (2) after the treatment the 1st meiotic division proceeded more slowly than that of control. Further, it is also evident that the treatment of water-immersion effected (3) no induction of chromosome breakage and (4) at 25°increase of the aberrations in telophase I which were due to abnormalities of spindle function compared with those in control.

収録刊行物

  • 植物学雑誌

    植物学雑誌 76 (895), 28-31, 1963

    公益社団法人 日本植物学会

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