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題名 | 破布子與朴樹種子的儲藏性質與發芽=Seed Storage Behavior and Germination of Fragrant Manjack (Cordia Dischotoma G. Forst.) and Chinese Hackberry (Celtis Sinensis Pers.) |
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作者姓名(中文) | 楊正釧; 郭幸榮; 林讚標; | 書刊名 | 臺灣林業科學 |
卷期 | 21:4 民95.12 |
頁次 | 頁447-459 |
分類號 | 436.251 |
關鍵詞 | 破布子; 朴樹; 儲藏性質; 乾儲型; 層積; Fragrant manjack; Cordia dichotoma; Chinese hackberry; Celtis sinensis; Seed storage behavior; Orthodox; Stratification; |
語文 | 中文(Chinese) |
中文摘要 | 本研究目的在明瞭破布子與朴樹種子的發芽特性並探討其儲藏性質。此二樹種具活力的新鮮種子於30/20℃變溫環境下6週內就可發芽完畢,平均發芽日數分別是15.6與11.8 d,故此二批種子均不具休眠性。也因此,4℃層積處理僅能提升發芽速率。破布子種子會隨4℃層積時間之延長而逐漸衰敗,層積9 mo後種子活力迅速下降,12 mo後就死亡殆盡。而朴樹種子在4℃層積經4 mo後會開始自行發芽,7 mo後具有活力的種子就完全發芽。故低溫濕藏亦非此二種子短暫儲藏的可行方法。當破布子與朴樹種子的含水率分別降低至4.5~12.7與3.8% (鮮重),儲藏於-20和4℃經24 mo後其發芽率並無顯著下降,故判定其種子儲藏性質均屬乾儲型。 |
英文摘要 | The storage behavior and germination characteristics of seeds of the fragrant manjack (Cordia dichotoma G. Forst.) and Chinese hackberry (Celtis sinensis Pers.) were investigated. Freshly mature viable seeds of these 2 species could completely germinate under alternating temperatures of 30/20℃ with 8 h of light within 6 wk. The mean germination times of their freshly mature seeds were 15.6 and 11.8 d, respectively. Therefore, the seeds of these 2 species were shown to be nondormant. That is the reason why 4℃ chilling only had an effect on the rate of germination. The seeds of C. dichotoma deteriorated rapidly when the chilling period was extended to 9 mo and died completely after 12 mo of being chilled. With a stratification period extended to longer than 4 mo, seeds of C. sinensis forced seed germination under chilling conditions, and complete seed germination could be achieved when the chilling period was extended to 7 mo. Thus, 4℃ stratification is not an appropriate way to store the seeds of these 2 species for the short term. Seed germinability could be maintained at -20 and 4℃, for at least 24 mo at moisture contents of 4.5~12.7 and 3.8% (on a fresh-weight basis) for seeds of C. dichotoma and C. sinensis, respectively. This therefore confirms the orthodox seed storage behavior of these 2 species. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。