...Even if the external conditions such as water and temperature are sufficient, the seeds may not germinate for a certain period of time and may go into spontaneous dormancy. This is because the seeds do not germinate until the chemical changes necessary for germination are complete inside the seeds, and is called after-ripening of the seeds. A dormant bud is a lateral bud that remains dormant and inactive on the branch while the terminal bud is actively growing, and generally begins to grow immediately if the terminal bud is removed. From [Germination] ...(2) will germinate if the seed coat is partially damaged by a file or if the seed is soaked in concentrated sulfuric acid for a short time, and (3) will germinate if the seed coat is removed. The properties of the seed coat that hinder germination of (2) and (3) are lost as the seed ripens. *Some terminology explanations that mention "after-ripening" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…また種子の完成後,水,温度などの外的条件が十分であっても一定の期間は種子は発芽せず,自発休眠する場合もある。これは,発芽に必要な化学変化が種子のなかで完了するまで発芽がおこらないためであり,種子の後熟現象after‐ripeningとよばれる。 休眠芽というのは頂芽が活発に生長している間その枝上にあって活動せずに休眠している側芽で,一般に頂芽を除去すればただちに生長を始める。… 【発芽】より…(2)は種皮の一部をやすりなどで傷つけたり種子を濃硫酸に短時間つければ,(3)は種皮を取り除けば発芽する。また(2),(3)の種皮の発芽の障害となる性質は後熟after‐ripeningが進むと失われる。 ※「after-ripening」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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