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Studies on Protomonimia and its evolutionary sighnificance on the origin of Angiosperms.

原菌属及其对被子植物起源的进化意义研究。

基本信息

批准号：
61304005
负责人：
NISHIDA Makoto
金额：
$ 3.2万
依托单位：
Chiba University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1987
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61304005/
关键词：
Amentiferae Cretaceous Fructifications Monimiaceae Petrified plants Polycarpicae モニミア科

项目摘要

1. Nishida, N. found out several fructifications from the Upper Cretaceous of Hokkaido. As for coniferous cones, he recognized 3 new genera, Parataiwania, Paraglyptostrobus and Yezosequoia, of the Taxodiaceae, cedroid and pinoid cones of the Pinaceae, and two genera of the Cupressaceae. As for fruit of the dicotyledonae, he examined a mysterious fruit bearing a suture in the yentral side and only one seed. Theis seed is the largest one found from the Cretaceous so far.2. Tamura considered about floral anatomy, especially carpels, of the Polycarpicae to which Protomonimia seems to belong.3. Yamashita examined embryogenese, especially development of the root, of the Gramineae and Commerinales and gave a lecture in the simposium of the Botanical Congress held at July, 1987 in Berlin.4. Kadono studied co-evolution between flower and insect and considered pollination-ecology of the fossil plants. He also speculated pollination pattern of Protomonimia through the studies mentioned above.5. Ueda considered geography of the Polycarpicae. He thought the Monimiaceae with which Protomonimia seems to have affinities would be one of the elements of Gondwana land andd discussed on the significance of existance of Protomonimia in the Northern hemisphere.6. Nishida, M. reconstructed gross morphology and floral vasculature of Protomonimia (Nishida, H. and M. Nishida, 1988,in press).

1. Nishida，N.在北海道的上白垩统发现了几个果实化石。关于针叶树的球果，他鉴定了杉科的Parataiwania、Paraglyptostrobus和Yezosequoia三个新属，松科的雪松和松树的球果，以及柏科的两个新属。至于双子叶植物的果实，他检查了一种神秘的果实，在yentralside上有一条缝合线，只有一颗种子。这颗种子是迄今为止在白垩纪发现的最大的一颗。田村认为花的解剖学，特别是心皮，Polycarpicae的Protomonimia似乎是。山下研究了禾本科和商用植物的胚胎发生，特别是根的发育，并在1987年7月在柏林举行的植物学大会上发表了演讲。4.角野研究了花与昆虫之间的协同进化，并考虑了化石植物的授粉生态学。通过上述研究，推测了原单胞菌属的传粉方式.上田考虑了多果类的地理。他认为与原梦遗有亲缘关系的梦遗科可能是冈瓦纳大陆的组成部分之一，并讨论了原梦遗在北方半球存在的意义. Nishida，M.重建了原梦花属（Nishida，H.）的总体形态和花维管系统。和M. Nishida，1988，in press）.