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- Tanaka N.
- Division of Genetics, Botanical Institute, Faculty of Science, University of Tokyo
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- Takemasa N.
- Division of Genetics, Botanical Institute, Faculty of Science, University of Tokyo
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- Sinotô Y.
- Division of Genetics, Botanical Institute, Faculty of Science, University of Tokyo
書誌事項
- タイトル別名
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- Karyotype and chromosome bridge in the young leaf meristem of <i>Ginkgo biloba</i> L
抄録
The karyotype analysis of Ginkgo biloba L. has been studied in the mitotic cells of young leaf meristems. The basic number (b) is twelve. A haploid chromosome complement in both sexes contains two submedian and ten subterminal chromosomes, of which the longest is submedian and has a trabant, and the eighth is subterminal and trabanted. The. chromosome with tandem trabants is occasionally found.<br>The karyotype formula follows:<br>K(2n)=24(2b)=2tAsm+2Bst+2Csm+8Dst+2tEst+8Fst where t, sm, and st represent trabant-, submedian-, and subterminal chromosomes, respectively.<br>Sticky chromosome bridges in ana- and telophases in mitotic cells have been met with in the young leaf meristem not infrequently. This irregularity was frequent in the young leaf shoots sprouted early in April, and decreased as the date elapsed and diminished at the end of May.<br>It is suggested that these irregularities caused by the special physiological condition are probably due to cellular inclusions-certain organic substances extractable by water.
収録刊行物
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- CYTOLOGIA
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CYTOLOGIA 17 (2), 112-123, 1952
公益財団法人 日本メンデル協会
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詳細情報 詳細情報について
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- CRID
- 1390001204105676416
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- NII論文ID
- 130003953837
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- ISSN
- 13487019
- 00114545
- http://id.crossref.org/issn/00114545
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可