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題名 | 五種槭樹之種子儲藏性質=Seed Storage Behavior of Five Species of Acer |
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作者姓名(中文) | 楊正釧; 林讚標; | 書刊名 | 臺灣林業科學 |
卷期 | 14:4 1999.12[民88.12] |
頁次 | 頁479-492 |
分類號 | 436.251 |
關鍵詞 | 樟葉槭; 臺灣三角楓; 尖葉槭; 臺灣紅榨槭; 青楓; 亞正儲型; 層積處理; Acer albopurpurascens; A. buergerianum var. formosanum; A. kawakamii; A. morrisonense; A. serrulatum; Sub-orthodox; Stratification; |
語文 | 中文(Chinese) |
中文摘要 | 五種槭樹:樟葉槭、 台灣三角楓、尖葉槭、 台灣紅榨槭與青楓之種子均能忍受乾燥至含水率10%以下,種子儲藏壽命亦呈現-20℃>4℃>15℃等正儲型種子特性,但推測其發芽率之半衰期分別是樟葉槭9年、台灣三角楓2.2年、尖葉槭2.1年、台灣紅榨槭1.2年及青楓4年,其壽命明顯低於正儲型種子,故依Bonner (1990)對種子儲藏性質之分類應歸屬於亞正儲型。以-20℃乾藏時最適合的種子含水率範圍分別是樟葉槭8-14%、台灣三角楓8-13%、尖葉槭11- 16%、台灣紅榨槭7-11%及青楓11-16%。五種種子均具休眠性,樟葉槭新鮮種子發芽率54.5%(發芽時間12週),以4℃ 層積4個月可使發芽率提高到89.9%;同此,台灣三角楓發芽率由40.8%提升到67.1%;尖葉槭由僅1.5%提升到72%;台灣紅榨槭由49%提升到79.1%及青楓由22.5%提升到74.6%。樟葉槭及台灣三角楓於4℃濕藏1個月後開始自行發芽,而尖葉槭、台灣紅榨槭及青楓則於2個月後才開始,故後三種較前二種具較深之休眠。 |
英文摘要 | Seeds of 5 species of Acer, i.e., A. albopurpurascens Hay., A. buergerianum Miq. var. formosanum (Hay.) Sasaki, A. kawakamii Koidzumi, A. morrisonense Hay., and A. serrulatum Hay., showed desiccation tolerance to 10% moisture content. Also temperature effect on seed longevity followed the order of -20℃>4℃>15 ℃, thus the behavior of these 5 species were consistent with orthodox seed storage behavior. The estimates of seed longevity which were predicted by the time period for the seeds to decrease to 50% of their initial germination percentage, however, were shorter than those for orthodox seeds (i.e., A. albopurpurascens: 9 yr, A. buergerianum var. formosanum: 2.2 yr, A. kawakamii: 2.1 yr, A. morrisonense: 1.2 yr, and A. serrulatum: 4 yr), therefore their longevity conformed to sub-orthodox seed behavior of Bonner (1990). The optimum seed moisture contents of these 5 species stored at -20℃ were 8-14%, 8-13%, 11- 16%, 7-11%, and 11-16% for A. albopurpurascens, A. buergerianum var. formosanum, A. kawakamii, A. morrisonense, and A. serrulatum, respectively. Seed dormancy of these 5 species could be overcome by 4℃ stratification. Germination percentage of fresh mature seeds in a period of 12 wk for A. albopurpurascens, A. buergerianum var. formosanum, A. kawakamii, A. morrisonense, and A. serrulatum increased from 54.5% to 89.9%, 40.8% to 67.1%, 1.5% to 72%, 49% to 79.1%, and 22.5% to 74.6%, respectively, if the seeds were prechilled for 4 mo. The former 2 species began to germinate in hermetic storage after 1-mo wet storage at 4℃ but the latter 3 species needed 2 mo. Therefore, A. kawakamii, A. morrisonens, and A.serrulatum showed deeper dormancy than did A. albopurpurascens and A. buergerianum var. formosanum. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。