墨點櫻桃與刺葉桂櫻種子之發芽與儲藏行為

Germination and Storage Behavior of Prunus phaeosticta and Prunus spinulosa Seeds

陳舜英(Shun-Ying Chen) ； 簡慶德(Ching-Te Chien)

《台灣林業科學》 17卷1期 (2002/03) Pp. 59-66

https://doi.org/10.7075/TJFS.200203.0059

摘要

本研究選擇台灣原產的墨點櫻桃及刺葉桂櫻種子爲材料，目的在於探討是否具休眠性及尋求有效方法解除種子休眠和促進發芽，並瞭解種子的儲藏行爲。研究發現低溫層積處理能有效解除墨點櫻桃及刺葉桂櫻種子的休眠，墨點櫻桃種子僅需4個星期的5℃低溫層積就能解除休眠，且低溫層積時間愈長，發芽速率愈快；但刺葉桂櫻需要12星期的低溫層積處理，且發芽速率較墨點櫻桃慢。暖低溫組合層積亦能解除這二種種子的休眠；4星期的30/20℃變溫和4星期的5℃足以解除墨點櫻桃種子的休眠，而刺葉桂櫻種子需要4星期的30/20℃或25/15℃變溫和8星期的5℃低溫。就種子的儲藏行爲而言，墨點櫻桃種子屬於異儲型，而刺葉桂櫻種子則推測屬於不儲型。

關鍵字

墨點櫻桃 ； 刺葉桂櫻 ； 暖低溫組合層積 ； 低溫層積 ； 種子休眠

並列摘要

Most freshly harvested seeds of Prunus species are dormant and germinate poorly. This paper describes and discusses effective methods to overcome dormancy and promote germination of Prunus phaeosticta and P. spinulosa seeds, and to determine the storage behavior of these 2 species. Stratification at 5℃ for 4 wk was capable of releasing seed dormancy of P. phaeosticta, and the germination speed increased when the stratification period was extended from 4 to 12 wk. For P. spinulosa seeds, stratification at 5℃ for 12wk was needed for dormancy breaking, and the germination speed was significantly slower than that of P. phaeosticta seeds in the same stratification period. Warm plus cold stratification also was capable of releasing seed dormancy of these 2 species. Warm stratification at 30/20℃ for 4 wk followed by 5℃ for 4wk was capable of releasing seed dormancy of P. phaeosticta, but dormancy of seeds of P. spinulosa was released with warm stratification at 30/20℃ or 25/15℃ for 4wk and 5℃ for 8wk. Seeds of P. phaeosticta are recognized to exhibit recalcitrant storage behavior, while seeds of P. spinulosa are possibly recognized as having orthodox storage behavior.

並列關鍵字

Prunus phaeosticat ； Prunus spinulosa ； combined warm and cold stratification ； cold stratification ； seed dormancy