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頁籤選單縮合
題 名 | 層積處理對薯豆種子休眠和發芽之影響=Effects of Stratification on the Dormancy and Germination of Elaeocarpus Japonicus Sieb. & Zucc. Seeds |
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作 者 | 楊正釧; 陳裕星; 林讚標; | 書刊名 | 臺灣林業科學 |
卷 期 | 16:1 2001.03[民90.03] |
頁 次 | 頁47-52 |
分類號 | 436.259 |
關鍵詞 | 薯豆; 種子休眠; 層積; 暖低溫層積; 發芽; Elaeocarpus japonicus; Seed dormancy; Chilling; Warm and cold stratification; Germination; |
語 文 | 中文(Chinese) |
中文摘要 | 採後即播的薯豆種子需甚長發芽期且發芽零散。本文旨在探討種子休眠程度,並 尋求有效解除休眠及促進發芽的方法。採自台北縣石碇縣的薯豆種子,經16週發芽期僅有 1.0%之發芽率,且尚有大量種子並未腐敗,足見其具一定程度之休眠。以4℃層積打破種 子休眠所需之最短時間為4個月(發芽率40.7 ±3.1%),而組合層積需時最短者為5個 月(20/30℃層積2個月再入4℃層積3個月,發芽率40.1 ±4.2%)。另以15%H2O2浸 泡30分鐘及75%酒精浸泡30秒鐘之藥劑處理後再進行低溫或組合層積,其解除種子休眠效果 均遜於控制組(未經藥劑處理者)。 |
英文摘要 | Fresh seeds of Elaeocarpus japonicus usually reguire a long time.to germinate, and the emergence is irregular without appropriate pretreatment. This paper investigates the depth and the breaking of seed dormancy; the improvement of germination of this species by stratification is also discussed. Seeds of E. japonicus collected in Hsihding Village of Taipei Country germinated poorly (1.0%) after incubation for 16 wk at alternating temperatures of 30/20℃; these seeds remained dormant and most seeds were not decayed. The shortest stratification period needed for breaking dormancy was chilling at 4℃ for 4 mo (germination percentage 40.7 ±3.1%) or combined stratification for 5 mo (2 mo of 30/20℃ followed by 3 mo of 4℃ stratification, germination percentage 40.1 ±4.2%). Chemical treatments (soaking seeds in 15% H2O2 for 30 min or in 75% ethanol for 30 s) before stratification were not more effective than the control in breaking seed dormancy. |
本系統中英文摘要資訊取自各篇刊載內容。