Changes of Reserve Foods in Seeds of Kuromatu (Pinus Thunbergii PARL.) during the Course of Germination
スポンサーリンク
概要
- 論文の詳細を見る
1. In order to investigate the changes in the amount of the reserve foods in the seed of Kuromatu (Pinus Thunbergii PARL.) during germination, some quantitative analyses were carried out for fats, total nitrogen, total sugars and starch. Samples were taken at seven different stages in the course of germination, the embryo and the endosperm were analyzed separately. 2. The reserve foods in the dormant seed consisted of fats and protein with small quantity of sugars and others. 3. With the process of germimation the fats decreased in both the embryo and the endosperm. The most of the nitrogen moved from the endosperm to the embryo but its decrease in the entire seed was little during the course of germination as are usually seen in other oily seeds. 4. Although the most of changes occured after the radicle appeared, a slight decrease in the contents of fats and increase of total nitrogen were observed in the embryo during the first two days after the seeds were placed in a germinator. It is supposed that these changes are due to decomposition of fats in the embryo and movement of nitrogen from the endosperm. 5. The course of decrease of the fats was similar to that of the nitrogen in the endosperm, suggesting the existence of certein relations between them. The writers are indebted to Professor Dr. Kentaro NAKAMURA, Assistant Professor Taisitiroo SATOO for their kind guidance throughout the investigation and to Assistant Professor Kyoji MINAMI for his kindness in reading the original manuscript.休眠しているクロマツのたねがめばえまで生長する間におこる貯蔵物質の変化をしるために発芽のけいかを第1表のように七つの段階にわけ，おのおのの段階においてはいとはい乳にふくまれるしぼう，ちつそ，糖，でんぷんの量をしらべた。貯蔵物質はおもにしぼうとたん白質からなつているが，発芽にともなつて大部分のちつそははい乳からはいへうつゝた。しかしたね全体としてのへりはすくなかつた。一方しぼうははい，はい乳ともにいちじるしくへり糖，でんぷんがふえた。これらは他のしぼうにとんだたねの発芽でこれまでにしられている変化とほとんど同じである。貯蔵物質のいちじるしい変化は幼根が外にあらわれてからおこつたがわずかの変化は段階IIIのはいからすでにみられた。
- 東京大学大学院農学生命科学研究科附属演習林,The Tokyo University Forests,大学院の論文
東京大学大学院農学生命科学研究科附属演習林,The Tokyo University Forests,大学院 | 論文
- 地表面傾斜の滲透に及ぼす影響（室内模型実験）
- 連送式索道の荷重牽引力算定法（第2報）
- 連送式索道の荷重牽引力算定法（第1報）
- Changes of Reserve Foods in Seeds of Kuromatu (Pinus Thunbergii PARL.) during the Course of Germination
- 四国西南部の腹帯林植生