摘要
夜來香（重瓣）球莖的putrescine與spermine，在花芽分化初期比營養生長階段分別減少了26﹪及35﹪。在花芽分化初期階段相對地，球莖的cadeverine與spermidine含量有顯著增加之現象。一般而言，夜來香根部的多胺比葉部及球莖的還少。實驗結果亦顯示夜來香的根部及葉片內生性的多胺之變化，與誘導開花及花芽分化並無任何相關。本研究結果顯示，夜來香的早期誘導開花階段的特徵之一，是球莖的cadeverine與spermidine含量增加。這同時也暗示，球莖之putrescine與spermine顯著的減少與夜來香的開花有關聯。

Abstract
In the day-neutral plant Polianthes tuberosa L.（cv. Double）putrescine and spermine in corms at the early floral initiation stage decreased by 26 and 35﹪,respectively, compared with those in the vegetative stage. In contrast, a sharp increase in cadeverine and spermidine titres in corms were recorded at the early floral initiation stage. Polyamines in the roots were generally lower than those in the leaves and corms. In no case were the changes in endogenous polyamine titres in the roots and leaves associated with floral initiation and flower development in P. tuberosa. Results indicate that an increase in cadeverine and spermidine titres in the corms seems characteristic of early floral initiation in P. tuberosa. It is also suggested that a significant reduction in putrescine and spermine in the corms is involved in the early floral initiation in P. tuberosa.

目錄
致謝．．．．．．．．．．．．．．．．．．．．．．．．．．．2
縮寫表．．．．．．．．．．．．．．．．．．．．．．．．．．3
中文摘要．．．．．．．．．．．．．．．．．．．．．．．．．4
英文摘要．．．．．．．．．．．．．．．．．．．．．．．．．5
前言．．．．．．．．．．．．．．．．．．．．．．．．．．．6
材料與方法．．．．．．．．．．．．．．．．．．．．．．．．10
結果與討論．．．．．．．．．．．．．．．．．．．．．．．．14
結論．．．．．．．．．．．．．．．．．．．．．．．．．．．17
參考資料．．．．．．．．．．．．．．．．．．．．．．．．．18
圖一：夜來香花芽分化三種時期的SEM照片．．．．．．．．．．26
圖二：PAs標準品及內部標準品 HPLC分析圖．．．．．．．．．27
圖三：夜來香內生性多胺含量變化．．．．．．．．．．．．．．28
圖四：ADC及ODC的活性與夜來香花芽分化的關係．．．．．．．29
表一：夜來香外加藥劑處理對於花芽分化的影響．．．．．．．．30

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