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花粉-胚珠比與花藥-胚珠比:被子植物繁殖系統的參考指標

Pollen-Ovule Ratio and Anther-Ovule Ratio: Referable Indicators of Breeding Systems in Angiosperms

摘要


花粉-胚珠比係指開花植物之花粉數與胚珠數的比值,對植物之繁殖系統較花之形態更具有指標作用。本文檢閱相關文獻,以花粉-胚珠比來探討開花植物之繁殖策略改變、授粉生態、演化及系統分類等議題,發現除部份分類群外,花粉-胚珠比可視為一保守指標。因榕屬植物獨特之共生授粉生態系統及花粉粒極小之因素,本文藉由計數花藥-胚珠比取代花粉-胚珠比來探討榕屬植物與榕果小蜂之授粉生態與系統分類等問題。

並列摘要


Pollen-ovule ratio (P/O) of the angiosperms, the ratio of pollen grains to ovules, can reflect more indications than floral morphology for the breeding systems. This article reviews numerous literatures about P/O to explore its relationship with breeding system, pollination ecology, evolution, and taxonomic, etc. Because of the special pollination mutualism ecology and the minute pollen size of Ficus, anther/ovule ratio (A/O) substitutes for P/O to explore their pollination ecology and phylogeny.

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