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題 名 | 鬼桫欏配子體與幼孢子體的形態發生=Morphogenesis of Gametophytes and Juvenile Sporophytes of Cyathea podophylla (Hook.) Copel. |
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作 者 | 李沛軒; 應紹舜; 邱文良; | 書刊名 | 國立臺灣大學農學院實驗林研究報告 |
卷 期 | 13:3=225 1999.09[民88.09] |
頁 次 | 頁193-202 |
分類號 | 378.13 |
關鍵詞 | 鬼桫欏; 配子體; 幼孢子體; Cyathea podophylla (Hook.) Copel.; Gametophyte; Juvenile sporophyte; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究目的是在於了解鬼桫欏的孢子、配子體與幼孢子體的形態發生。每一孢子 囊內有 64 個孢子;其孢子形態是四面體型,具三叉溝狀發芽孔;孢子撒播 11 天後發芽, 其型式為桫欏型;而配子體發育是鐵線蕨型或槲蕨型。 孢子撒播 7-8 週後,藏精器出現於 兩翼或近假根處;11-12 週時,藏卵器出現於心形凹陷下方。大部分成熟配子體呈現心形, 且在凹陷下方具剛毛狀之多細胞毛。培養密度大之雄性配子體數量大於培養密度小之雄性數 量。5 個月後出現無中肋葉片之幼孢子體。 |
英文摘要 | The morphogenesis of spores, gametophytes, and juvenile sporophytes of Cyathea podophylla (Hook.) Copel. were studied. In a sporangium there were 64 spores, which were tetrahedral with trilete. After 11 days of sowing, spores began to germinate. The germination pattern is of Cyathea type, and the development of gametophytes is of adiantum or Drynaria type. Antheridia were borne in the wings or near the rhizoid area by 7-8 weeks, and archegonia appeared below the notch by 11-12 weeks. The mature gametophytes were generally cordate with bristle-like hairs below the notch. There were more male gametophytes in the dense population than those in the sparse one. Juvenile sporophytes with midribless blades appeared after 5 months. |
本系統中英文摘要資訊取自各篇刊載內容。