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題 名 | Phenology and Reproductive Strategy of a Common Fig in Guangzhou=廣州常見一種榕樹的生殖策略和氣象學之關係 |
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作 者 | 于慧; 趙南先; 陳貽竹; 鄧源; 堯金燕; 葉華谷; | 書刊名 | Botanical Studies |
卷 期 | 47:4 民95.10 |
頁 次 | 頁435-441 |
分類號 | 373.961 |
關鍵詞 | 雌雄異株; 粗葉榕; 榕小蜂; 互利共生; 性別特化; Dioecy; Ficus hirta; Fig wasps; Mutualism; Sexual specialization; |
語 文 | 英文(English) |
中文摘要 | 桑科(Moraceae)榕屬(Ficus Linn.)植物與傳粉昆蟲(Chalcidoidae: Agaonidae)形成了專一性很強的互利共生體系。本論文研究了廣州華南植物園雌雄異株植物粗葉榕(Ficus hirta Vahl.)花序,種子的傳粉者的物候資料及雌雄植株對間的性別特化。研究結果表明:粗葉榕的花序在一年四季均可產生,株內花序非同步,株間花序同步和非同步共存,在適宜期大量產生接收花序和供給花序(提供傳粉者)並彼此相關,來促進傳粉和傳粉者的生成。雌株上每季花序持續時間長於雄株,沒有花序生成的時間也長於雄株。雌株上接收期花序和成熟期花序的直徑和產量都小於雄株,但雌株花序的雌花利用率即種子產量顯著高於雄株花序。花序產量與株高無關,但雌株的花序產量與植株上的分支數顯著相關。 |
英文摘要 | Ficus spp. (Moraceae) and their pollinator wasps (Chalcidoidae: Agaonidae) have co-evolved a highly mutualistic relationship, and depend completely on each other for reproductive success. Here, we present data on syconia, seed and pollinator production of the dioecious fig Ficus hirta Vahly, which were gathered to investigate the phenology and sexual specialization of individual trees. Syconia were produced asynchronously within trees, and there were sufficient degrees of both synchrony and asynchrony among trees to maintain pollinator production throughout the year. Production of receptive syconia and mature male syconia peaked at the same time to facilitate both pollination and pollinator production. The duration of crop development in female trees was longer than that in male trees, and the mean interval between syconia production was also longer in female trees. The mean diameter and total number of female syconia in receptive and ripe phase were lower, but the proportion of female flowers utilized in them was higher than that in male syconia. Syconium production was not correlated with the height of either female or male trees. The number of syconia produced was significantly correlated with the amount of branches on female trees but not on males. |
本系統中英文摘要資訊取自各篇刊載內容。