環控設施內低溫誘導草莓‘豐香'花芽分化之解剖觀察

Anatomical Study on Inducing Floral Differentiation of Strawberry 'Toyonoka' with Low Temperature in Controlled Growth Chamber

鄔家琪(Chia-Chyi Wu) ； 顏玉航(Yu-Hang Yen) ； 楊証閔(Cheng-Min Yang)

《宜蘭大學生物資源學刊》 7卷1期 (2011/12) Pp. 1-6

https://doi.org/10.6175/job.2011.71.11

摘要

短日下草莓花芽的分化需要以低溫誘導。為了明瞭在環控設施內草莓‘豐香’花芽誘導所需的溫度與時間，以20/17℃與17/14℃二種日/夜溫處理，觀察花芽分化的解剖構造。結果顯示‘豐香’在日/夜溫20/17℃、日長的小時生長箱中，約10天才能進入花芽分化期，12天進入花序分化期，20天完成花芽分化；而在日/夜溫17/14℃、日長10小時生長箱中，僅需約8天即能進入花芽分化期，12天進入花序分化期，18天完成花芽分化。草莓植株在17/14℃下頂端分生組織轉為花芽開始分化的時間較在20/17℃下約可提早2天。

關鍵字

草莓 ； 花芽分化 ； 溫度 ； 解剖

並列摘要

Floral differentiation of strawberry is induced by low temperature in short daylength. The effect of low temperature on floral differentiation of strawberry 'Toyonoka' was observed through microscope. The plants were grown in controlled growth chamber at day/night temperature 20/17℃ and 17/14℃, day-length 10 hours for 20 days. Under 20/17℃, the flower buds were initiated in 10 days, inflorescence differentiated in 12 days, and flower differentiation completed in 20 days. However, under 17/14℃, the flower buds were initiated in 8 days, inflorescence differentiated in 12 days, and flower differentiation completed in 18 days. The duration of apical meristem induced to floral initiation was 2 days earlier at 17/14℃ than at 20/17℃.

並列關鍵字

strawberry ； floral differentiation ； temperature ； anatomy