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題名 | 惠蓀林場牛奶榕之榕果物候=Syconium Phenology of Ficus erecta var. beecheyana at the Hue-Sun Forest Station |
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作者 | 曾喜育; 歐辰雄; 呂福原; Tzeng, Hsy-yu; Ou, Chern-hsiung; Lu, Fu-yuan; |
期刊 | 臺灣林業科學 |
出版日期 | 20031200 |
卷期 | 18:4 2003.12[民92.12] |
頁次 | 頁273-282 |
分類號 | 373.96 |
語文 | chi |
關鍵詞 | 牛奶榕; 榕果物候; 性別分化; 惠蓀林場; Ficus erecta var. beecheyana; Syconia phenology; Sexual differentiation; Hue-Sun forest station; |
中文摘要 | 本研究自1995年10月∼1997年2月止,觀察惠蓀林場雌雄異株之牛奶榕榕果物候。在個體階級,雌、雄株一年每株有1∼4個花季。在族群階級,牛奶榕榕果物候呈現明顯季節性,雄榕果主要花季在2∼6 mo,雌榕果則在4∼7 mo有1個主要花季,8∼10 mo有1個次要花季,並形成連續性雙峰分布;雌、雄株的榕果高峰相距2∼3個月。分析結果顯示,雌榕果量與氣溫及降雨均呈顯著正相關,雄榕果量與氣溫呈顯著負相關。雌、雄榕果生產對氣溫、降雨呈現性別分化,此現象可能分別有助於種子的生產與發芽,以及牛奶榕小蜂的生存,顯示著牛奶榕雌、雄株的適應差異。 |
英文摘要 | We investigated the syconium phenology of the dioecious fig Ficus erecta Thunb. var. beecheyana (Hook. et Art.) King (Moracaea) at the Hue-Sun Forest Station in central Taiwan from October 1995 to February 1997. During that time, each individual produced 1 to 4 crops a year. In addition, there was a temporal interval, 2-3 mo, between male (February-June) and female (Apile-July) fig abundance at the population level. In this dioecious species, male and female trees initiated their maximal fig crops at different times, showing seasonal syconium production. According to Kendall’s rank correlation analysis, female syconium production was correlated with rainfall and temperature; in contrast, male syconium production was negatively related to temperature only.Syconium production responded with fluctuations in the climate and showed sexual differentiation, indicating that the syconium production of each gender was adapted to the environment of the Hue-Sun Forest Station. This mingh be helpful for seed production and germination, and for maintaining the population of the obligate pollinator, Blastophaga nipponica. |
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