臺灣白及種子發育與貯藏之研究

Seed Development and Storage of Bletilla formosana (Hayata) Schltr.

張正(Chen Chang) ； 宋珮綺(Pei-Ghi Sung) ； 張芝瑄(Chih-Hsuan Chang) ； 陳盈君(Ying-Chun Chen) ； 林永浩(Yung-Hao Lin)

《植物種苗》 8卷3期 (2006/09) Pp. 29-38

https://doi.org/10.30077/SN.200609.0003

摘要

臺灣白及(Bletilla formosana (Hayata) Schltr.) 為多年生草本蘭科植物，假球莖乾燥可視為白及(Bletilla striata)藥材使用。由臺灣白及蒴果發育期的長度、寬度及重量變化，種子發育觀察及發芽能力的數據顯示，授粉後2週子房快速發育，並形成胚囊、進行受精作用。授粉後2-5週形成種子，5-8週胚發育充實，8週以後蒴果失水及種子後熟。授粉後5週的種子始得到發芽能力，10週的種子發芽率最高，11週的蒴果乾枯成褐色，逐漸開裂。臺灣白及的種子在3℃及25℃添加矽膠的環境中貯存4個月，發芽率可維持75%-94%，貯存6個月則發芽率下降到47%-57%。25℃無添加乾燥劑的處理則在貯存後1個月，發芽率下降到11.93 %，第2個月發芽率下降到0%，顯示低溫或低濕度的貯存環境有利於延長臺灣白及種子的貯存壽命。

關鍵字

臺灣白及 ； 種子 ； 發芽 ； 貯存

並列摘要

Bletilla formosana (Hayata) Schltr., a perennial herb orchid, produced pseudobulb as the traditional Chinese medicine. Capsule development, seed morphology and the germination percentage were studied. After pollination for 2 weeks, ovule formed and fertilized. Seed formation was observed after pollination for 2-5 weeks. Seeds could germinate as early as 5 weeks after pollination, and became maturity after 8 weeks. At 10 weeks of pollination, the water content of capsule decreased while seed germination peaked. The mature seeds stored in 3℃ or addition silica maintained high germination (75%-94%) for four months. Germination reduced sharply after seeds storage in 25℃ and without silica gel for one month.

並列關鍵字

Bletilla formosana Hayata Schltr. ； seed ； germination ； storage