短日處理 ( 9小時日長 ) 可促進朵麗蘭之抽花梗。長日條件下生長之朵麗蘭抽花梗之植株明顯減少。經 30 日之短日處理後葉片之酸性不溶解態 spermidine 含量顯著減少, 而酸性不溶解態之 spermine 則呈現增加之現象。當花梗長度達到 7 – 10 cm 時 ( 在短日條件下生長之植株, 花梗頂端已有花原始體出現 ), 花梗之游離態之 cadaverine, 酸性不溶解態之 putrescine 及 spermine 含量均較花梗長 2 – 3 cm 時 ( 未出現花原始體 ) 為高。由以上之結果顯示, 日長處理後不同之polyamine 對朵麗蘭之花芽分化及花芽發育有不同的影響。

Polyamine titer in the leaves of the self-seedlings of Doritis pulcherrima Lindley（cv. S84-3352）under short-day ( SD, 9 hours of light period ) and long-day ( LD, 16 hours of light period ) exposures were determined. A significant reduction in acid insoluble spermidine levels occurred in D. pulcherrima leaves after 30 days of SD compared to the LD exposures. After 30 days of SD there was a transient decrease in acid insoluble spermidine and an increase in acid insoluble spermine in the leaves. When the flowering shoot reached 7 -10 cm long ( with flower primordia in SD ), free cadaverine, acid insoluble putrescine, and spermine levels were higher than those in 2-3 cm flowering shoot ( with no flower primordium derived from SD ) These results suggest that polyamines are implicated differently during photoperiodic flower induction and flower devlopment in D. pulcherrima.

縮寫表-----------------------------------------------------------------------------3
第一章-----------------------------------------------------------------------------4
中文摘要--------------------------------------------------------------------5
英文摘要--------------------------------------------------------------------6
前 言--------------------------------------------------------------------7
材料與方法-----------------------------------------------------------------12
結果與討論-----------------------------------------------------------------16
圖 表--------------------------------------------------------------------21
參考文獻--------------------------------------------------------------------26
第二章-----------------------------------------------------------------------------31
中文摘要--------------------------------------------------------------------32
英文摘要--------------------------------------------------------------------33
前 言--------------------------------------------------------------------35
材料與方法-----------------------------------------------------------------38
結果與討論-----------------------------------------------------------------42
圖 表--------------------------------------------------------------------46
參考文獻--------------------------------------------------------------------49

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