學術資源整合系統-相關推薦

 
作者Chiu, Shau-Ting;Lin, Huan-Yu;Hung, Tzu-Huan
出版日期201912
已接受20191212
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著作名稱A Study of Structural Peculiarities and Reproductive Traits of Amorphophallus (Araceae) in Taiwan =台灣魔芋屬的構造特點與繁殖特性研究
刊名Collection and Research
32
頁數43-56
主題植物
關鍵字leaf traits; phenology; reproduction; plant functional morphology; 葉特性; 物候; 繁殖; 植物功能形態學; 魔芋屬
摘要 Besides taxonomic information, scant literature is available regarding the growth, productivity, and natural resources of konjac or elephant foot yam and related Amorphophallus species in Taiwan. The distribution, reproductive phenology, structural peculiarities of growth patterns, and propagation of seeds/tubers/subsidiary buds of four species of Amorphophallus in Taiwan were studied, and a maximum-likelihood analysis of the matK gene was conducted. All flowering habits after seasonal dormancy first produced inflorescences, followed by leaves and fruits. The earliest blooming species each year usually were A. kiusianus and A. henryi, and both were earlier than A. hirtus and A. paeoniifolius. However, all were delayed in the most recent 2 years. Leaf traits of the shade-loving A. henryi showed that the flattest adaxial lamina with thin and loose palisade mesophylls might be related to the production of large daughter tubers in low light intensities. The largest midrib in A. paeoniifolius with a great protrusion that formed several hollow canal-like spaces was not only for mechanical support of laminae but also produced high theoretical axial resistivity of the midrib. This species produced huge tubers and favored vegetative propagation with many subsidiary buds. Our molecular data on the affinity of Amorphophallus species in Taiwan provide sustaining documented records for future accurate identification and further conservation development. We suggest developing commercial crop projects for nutrition, health, and medicinal benefits. Understanding the functional morphology, including anatomical variations, is not only important for taxonomic identification but also for conservation of natural resources.

除分類學外,台灣鮮有有關魔芋或象腳山藥相關物種的生長、生產力和自然資源的文獻。本文探討台灣四種魔芋的分佈、生殖物候、生長方式的結構特點,並對種子/塊莖/輔助芽的繁殖以及matK的最大似然度進行了研究。季節性休眠後所有的開花習性是首先產生花序,然後是葉子和果實。通常一年中最早開花的物種是東亞魔芋(A. kiusianus)和台灣魔芋(A. henryi),兩者均比密毛魔芋(A. hirtus)和疣柄魔芋(A. paeoniifolius)早。但是最近兩年花期都往後延遲。喜蔭的台灣魔芋的葉特性顯示,最平坦的近軸葉片具有較薄且較疏的柵狀組織,可能與弱光下大塊莖的產生有關。疣柄魔芋具有最大的中脈,中脈側突出較大,葉片內含幾個空腔,形成類似內通道的空間,不僅用於薄葉的機械性支撐,也呈現出較高的理論性中脈的阻力,同時能產生相當大的塊莖與許多副芽,有助於營養繁殖。目前台灣魔芋屬近似性的分子數據可提供紀錄作為永續鑑別,及深入的保育發展。本研究所獲結果對於魔芋屬植物在作物生產、營養、健康及藥用等領域具有參考價值;此外,本研究之解剖變異及功能形態成果,亦可用於分類學的識別及自然資源的保護。
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Aug 16 2018 10:46:44
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