頁籤選單縮合
題 名 | Effect of Stratification and Drying on the Germination and Storage of Prunus Campanulata Seeds=山櫻花種子層積與乾燥處理對發芽與儲藏之效應 |
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作 者 | 簡慶德; 陳舜英; 楊正釧; | 書刊名 | 臺灣林業科學 |
卷 期 | 17:4 2002.12[民91.12] |
頁 次 | 頁413-420 |
分類號 | 435.416 |
關鍵詞 | 山櫻花; 種子休眠; 種子層積與乾燥; 種子發芽與儲藏; Prunus campanulata; Seed dormancy; Seed stratification and drying; Seed germination and storage; |
語 文 | 英文(English) |
中文摘要 | 山櫻花種了已知具有形態和生理之雙重性休眠,利用暖低溫組合層積處理能打 破種子休眠,促進發芽。通常這種打破休眠處理是種子乾藏後在播種前進行。本文旨在評估 打破休眠處理能否用於山櫻花種子乾藏之前,使這個已無休眠的種子能被儲藏利用。第一個 處理方法是將新鮮採收的種子在30/20℃或25/15℃變溫下層積6 wk,按著乾燥成3個不同 的含水率(4.8-5.3%,11.6-11.8%和16.3-17.1%),然後在-20℃或5℃下儲藏3-12mo,播 種前種子需再混合濕水苔進行低溫層積8 wk;第二個處理方法是將新鮮種了先進行6 wk之 30-2O°C或25/15℃變溫層積,按著8 wk之5℃低溫層積,在完全打破休眠後進行乾燥儲 藏,其儲藏的種子直接取出進行發芽試驗。評估標準為種子發芽率和平均發芽時間(MGT)。 研究結果顯示無論第一個或第二個處理刀法,種子在-2O℃或5℃儲藏l2 mo後皆可維持70 %以上的發芽率,然而第一個處理方法之種子平均發芽時間減少,且發芽整齊而迅速。本研 究有關處理的種子在儲藏後發芽率稍有降低的原因,文中有詳細討論。 |
英文摘要 | Seeds of Prunus campanulata are known for their morphological and physiological dormancy which can be broken by a combination of warm and cold stratification. This treatment is usually applied after storage and before sowing. The goal of this study was to evaluate the effectiveness of dormancy-breaking treatment before storage of Prunus campanulata seed. Two treatment procedures were proposed. The first one involved warm stratification of freshly collected seeds at 30/20℃ for 6 wk. followed by drying to 3 moisture contents (4.8-5.3%, 11.6-11.8% and 163.3-17.1%) and storage at -20℃ or 5℃ for 3-12 mo. Stored seeds were mixed with sphagnum and stratified at 5℃ for 8 wk before germination test. He second one involved warm stratification at30/20℃ for 6 wk followed by cold stratification at 5℃ for 8 wk for dormancy breaking, and then drying to 2 seed moisture contents (5.2 and 16.3%) for storage at *-20℃ or 5℃ for 3-12 mo. Stored seeds were tested directly for germination. Evaluation criteria used were the germination percentage and mean germination time (MGT). The result showed that seeds stored at -20℃ or 5℃ for 12 mo maintained 70% germination or above with the 2 treatment procedures. However, the first treatment procedure reduced MGT and enhanced the uniformity of germination. A possible cause for the reduced seed germination percentage during storage is discussed. |
本系統中英文摘要資訊取自各篇刊載內容。