Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/81737
標題: Effect of Paclobutrazol and Uniconazole on Growth and Flowering of Chinese Ixora
Paclobutrazol和Uniconazole對中國仙丹生長和開花之影響
作者: 陳麗筠
Li-Yun Chen
朱建鏞
黃敏展
Chien-Young Chu
Min-Chang Huang
關鍵字: 矮化劑;Paclobutrazol;生長抑制;開花調節;Uniconazole;Plant growth retardant;Growth retardantion;Flowering regulation
Project: 興大園藝, Volume 29, Issue 2, Page(s) 85-98.
Horticulture NCHU, Volume 29, Issue 2, Page(s) 85-98.
摘要: 
本試驗以扦插發根後4月齡的單節扦插苗,經兩次摘心後之盆栽中國仙丹為材料,比較不同濃度的paclobutrzol(PBZ)或uniconazole(UCZ)對植株生育、開花之影絆。試驗濃度(mg/pot)分別為:PBZ:O、16、24、32或40;UCZ:O、0.32、0.64、0.96或1.28。結果顯示,不論PBZ或UCZ,均可使節間變短,故能有效抑制株高,使株高與盆高之比例在1.97-2.2間。再者,中國仙丹經PBZ或UCZ處理後,花序直徑、花序高度及每花序之小花數減少,但每株之花序數增加,盆栽觀賞壽命亦較長。經PBZ處理者,可提早開花25-45天,而經UCZ處理者則可提早開花56-65天。不論PBZ或UCZ均可增進中國仙丹之盆花品質。

Chinese ixora (Ixora chinensis Lam) is an ornamental shrub ususlly planted in gardens for its attractive foliage and flowers. More recently, interest in potted Ixora has increased. This study was carried out to determine the effects of growth retardants, Paclobutrazol (PBZ) or Uniconazole (UCZ) on the growth and flowering of Chinese ixora. Both growth retardants were applied as medium drenches at concentrations of 0, 16, 24, 32, and 40 mg a.i. per pot for PBZ and 0,0.32, 0.64, 0.96 and 1.28 mg, or a.i. per pot for UCZ. Both PBZ and UCZ decreased plant height, internode length, days to anthesis, diameter of inflorescence, florets number per inflorescence but increased the number of inflorescences per plant. The shelf life was also increased. All concentrations tested were suitable for producing saleable potted plants. PBZ shortened the time to flowering about 25-45 days and UCZ shortened the time about 56-65 days. The quality of Chinese ixora as potted flowering plant was greatly improved by PBZ or UCZ.
URI: http://hdl.handle.net/11455/81737
ISSN: 0255-5921
Appears in Collections:第29卷 第02期
園藝學系

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