| Project/Area Number |
05304009
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| Research Category |
Grant-in-Aid for Co-operative Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
系統・分類
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
TOBE Hiroshi Kyoto Univ., Fac.Integrat.Hum.Studies Prof., 総合人間学部, 教授 (60089604)
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| Co-Investigator(Kenkyū-buntansha) |
OGINUMA Kazuo Kochi Women's Univ., Prof., 保育短期大学部, 教授 (30106794)
UEDA Kunihiko Kanazawa Univ., Fac.Sci., Ass.Prof., 理学部, 助教授 (60184925)
SUZUKI Mitsuo Tohoku Univ., Fac.Sci., Ass.Prof., 理学部, 助教授 (80111483)
TAKAHASHI Masamichi Kagawa Univ., Fac.Educ.Ass.Pro., 教育学部, 助教授 (00154865)
NISHIDA Makoto Res.Inst.Evol.Biol., Senior Res., 主任研究員 (40009428)
小菅 桂子 神戸大学, 理学部, 助手 (50215266)
西田 治文 国際武道大学, 体育学部, 助教授 (30164560)
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| Project Period (FY) |
1993 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥8,400,000 (Direct Cost: ¥8,400,000)
Fiscal Year 1994: ¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 1993: ¥4,500,000 (Direct Cost: ¥4,500,000)
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| Keywords | Fossil / Phylogeny / Paleobotany / Neobotany / Angiosperms / Ephedra / Ceratophyllaceae / Gymnosperms / 起源 / 白亜紀 / 花粉 / 遺伝子系統 / マツモ |
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| Research Abstract |
In this research project, the phylogeny of primitive angiosperms was studied from a viewpoint of paleobotany by M.Nishida, H.Nishida, Suzuki, and Takahashi as well as from a viewpoint of neobotany by Tobe, Ueda, Kosuge, and Oginuma.M.Nishida collected a permineralized angiosperm fructification from the Upper Cretaceous of Monbetsu-cho, Hokkaido and described its reproductive structure similar to the one of Magnoliales and paleoherbs ; H.Nishida collected a possibly dileniid angiosperm fructification from the Upper Cretaceous of Kodaira-cho, Hokkaido and discussed an evolutionary pathway from a magnoliid flower to a dileniid one ; Suzuki analyzed the possibly earliest dicotyledonous wood fossils from the Upper Cretaceous of Hokkaido, and of Saghalien of Russia, and described details of their wood structure ; Takahashi identified 3 distinct types of pollen including the one of Clavatipollenites from the Upper Cretaceous of Saghalien of Russia and, in addition, 8 distinct types of ephedroid pollen from the Lower Cretaceous of Hokkaido.On the other hand, Tobe and Oginuma both collected living materials of Ceratophyllum from various places in Japan to analyze its reproductive features and found 2n=78 and 2n=120 for the first time ; Ueda and Kosuge both analyzed a phylogeny of Ranunculaceae as one of representatives of primitive angiosperms on the basis of DNA sequences of glyceraldehyde-3-phosphate dehydrogenase(gap A), and discussed a possibility that is is comprised of multiple gene component.
In these researches, we have accumulated many various information on evolutionary and morphological aspects of primitive angiosperms.
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