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光期與溫度變化對台灣肖楠種子發芽之效應

The Effect of Different Photoperiods and Temperatures on the Germination of the Seeds of Calocedrus formosana (Florin) Florin

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摘要


在不同溫度及不同光期下進行臺灣肖楠種子發芽試驗,期能獲得適當之發芽條件。結果在24小時光照下,溫度效應之差異並不顯著,但其中20℃發芽率可達46%。在16小時光照下,20℃發芽率最高(44%),30℃最劣(15%)。在各種變溫組合下,20℃~5℃時有最高發芽率(41%)。因此,臺灣肖楠在24小時光照中,發芽率較高,其發芽準備期平均為8.3日,最後計算日數平均為35.4日。16小時光照下,較其他處理顯示提早發芽與較快之發芽速率,同時亦縮短發芽之最後計算日數。

關鍵字

光期 溫度 準備期 最後計算日數

並列摘要


Germination studies on the Calocedrus formosana (Florin) Florin under different temperatures and photoperiods, were conducted to find a suitable condition for germination. Under 24 hours light, the seeds reached the maximum germination percentage in constant temperature 20℃ (46%). Under 16 hours light, the seeds reached the maximum germination percentage in constant temperature 20℃ (44%). Under various alternating temperatures and different photoperiods, the seed reached the maximum percentages in 20-5℃, 16 hours light (41%). It is concluded that the seeds of Calocedrus formosana (Florin) Florin showed better germination percentage under 24 lights, but the seeds germinated earlier and faster than other treatments under 16 hours light and can shorten the final counts of germination duration.

並列關鍵字

photoperiod temperature lag phase final counts

被引用紀錄


嚴孝榕(2007)。台灣肖楠小孢子發育和花粉發育之研究〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2007.01502

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