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題 名 | 插穗節位對空心菜生長影響之研究=Growth Responses of Water Spinach (Ipomoea aquatica Forsk) to DifferentAge of Cuttings from Different Portion of Shoots |
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作 者 | 李美娟; 張龍生; 林宗賢; | 書刊名 | 中國園藝 |
卷 期 | 44:3 1998.09[民87.09] |
頁 次 | 頁311-322 |
分類號 | 435.24 |
關鍵詞 | 空心菜; 插穗; 幼年性; 位置效應; Water spinach; Cuttings; Juvenility; Topophysis; |
語 文 | 中文(Chinese) |
中文摘要 | 由母穗取不同節位扦插繁殖空心菜,高節位(11-12節)插穗繁殖植株形態較趨成熟,其節間較長,容易跑藤,平均開花節位低(第6節),開花數多(7.7朵):低節位(1-2節)插穗繁殖植株,形態較為幼年,萌生枝梢數較多,節間較短,平均開花節位較高(8.6節),花數較少(4.2朵),插穗節位高低顯現幼年性(juvenility)的位置優勢(topophysis),貼地面採收後,插穗符位顯現之位置效應消失,且萌生的枝梢有回復幼年性之現象。空心菜開花及跑藤,受插穗節位高低與株齡影響。空心菜實生苗在11-14節才能開花,由株齡將近一年的老株取穗扦插,平均在6-8符有花產生,少數於第一節位即能開花。不論有冬天短日或夏天長日下,跑藤現象都會隨著株齡增長而發生,與植株成熟有關,在此試驗中,跑藤現象與開花數為極顯著正相關(0.656***),而與始花節位呈顯著負相關(-0.391***)。 |
英文摘要 | Water spinach was propagated from different portions of shoots by cutting. Plants grew from higher portion of shoot had mature morphology. They have longer internodes, lower initiate-flowering node, more flower and their vine sprawled much easier. On the contrary, juvenile cuttings form lower portions of shoots had shorter internodes, higher initiate-flowering node, less flowers and more sprouts sprouts. Cuttings from different portions of shoots showed juvenile which was depends on topophysis. Sprouts re-grew from harvested cuttings near ground level did not show topophysis and appeared to be re-juvenilized. Besides topophysis, water spinach was getting mature with age. Seedlings flowered at the 11-14th node above ground. Few cuttings even flowered at the fist node. Under whether short-daylength winter or long-daylength summer, water spinach vines sprawled much easier as inceased in aging. The correlation coefficient between sprawling vine and flower number was positive significant (0.656***), but the correlation coefficient between spawling vine and iniltiate-flowering mode was negative significant (-.0391***) in this study. Therefore, the character of sprawling vine was related to the maturity of plant. |
本系統中英文摘要資訊取自各篇刊載內容。