An education project using space materials-The challenge of the Okinawa National college of Technology
| Autor: | Zukeran, Ari, Shimabukuro, Ui, Uehara, Shota, Sakashita, Gen, Ikematsu, Shinya, Department of bioresources engineering, Department of Information & communication systems engineering |
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| Jazyk: | japonština |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | 沖縄工業高等専門学校紀要 = Bulletin of Okinawa National College of Technology. 7:37-44 |
| ISSN: | 1881-722X |
| Popis: | 宇宙教育プロジェクトとは,宇宙に行った種子をきっかけに,子ども達の科学に対する興味を喚起する教育プロジェクトである.国際宇宙ステーション日本実験棟「きぼう」で約8か月間保管されたミヤコグサの種子(宇宙種1世代目)を地球で保管しておいた種子(地球種1世代目)とともに本校で育て,葉の数(葉数)と茎の長さ(茎長)の測定と発芽・奇形・開花・結実した種の割合を中心に生長を観察した.その際に結実した種子(2世代目)を回収し,各々の種子の長径と短径を測定した.また1世代目と同様に生長を観察した. 結果として,宇宙種においては発芽・葉数・茎長といった形質に対する宇宙環境の影響は無かった.しかし,開花・種子形成といった生殖活動の差や,宇宙種において奇形が確認されたことと,宇宙種2世代目の種子は大きさが小さく,扁平率が高くなる傾向がある可能性を確認できたことから,宇宙線及び無重力空間が影響を与えた可能性が示唆された. The space education project is a project in which the purpose is to inspire students interest in science by studying seeds that were kept in space over a period of time. The seed (the first generation of the space type) which is a Lotus japonicus (Miyakogus) a was kept for about eight months in the International Space Station Japanese experiment module Kibou. Two seeds were raised in this school, with one (the first generation of the earth type) being kept on earth, and the growth of both seeds was observed.The seeds (the second generation) which became fruitful by mating with the first-generation, were collected. The major axis and the minor axis of each seed were measured, and the growth was observed.In the space type, the influence of the space environment to its characteristics, such as sprout number, the number of leaves, and stem length, were not able to be checked.However, we were able to observe reproductive activities and check for malformations and differences, such as the bloom and seed formation. There is some evidence that cosmic rays and the gravity-free environment effected it.Moreover, the seed of the second generation of the space type tended to have a small geometric mean, and their major/minor axis ratios were high, so we tested for the possibility that all space type seeds will exhibit these traits. |
| Databáze: | OpenAIRE |
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