請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/76669
標題: | 植物生長調節劑與溫度對四季蘭開花之影響 Effects of Plant Growth Regulators and Temperature on Flowering in Cymbidium ensifolium |
作者: | Shih-Ying Lin 林詩穎 |
指導教授: | 張耀乾 |
關鍵字: | 甲苯胺,溫度,蘭花,開花調控, N6-benzyladenine,temperature,orchid,flowering regulation, |
出版年 : | 2016 |
學位: | 碩士 |
摘要: | 國蘭在臺灣外銷蘭花中排名第三,主要貿易對象為韓國,銷售種類則以四季蘭[Cymbidium ensifolium (L.) SW.]為大宗。四季蘭的葉藝極具特色,其花朵清香雅致,能增添觀賞價值。四季蘭花期集中於7-10月之夏秋季,冬季低溫不利於生殖生長,因此調節四季蘭花期使其周年開花能增進市場價值及外銷競爭力。施用細胞分裂素N6-benzyladenine (BA)及Kinetin可促進彩虹四季蘭抽梗開花,作用效果因藥劑種類、濃度與施用方式而異,季節與溫度亦影響其開花表現。
兩種細胞分裂素BA及Kinetin處理下,以BA對彩虹四季蘭催花的效果較佳,施用方式以澆灌之促進效果較葉面噴施強。提升BA濃度易造成花梗短縮,BA配合不同濃度GA3施用皆可使花梗增長,花梗長度隨GA3濃度增加而增加,以400 mg•L-1 BA +50 mg•L-1 GA3處理具最佳之開花表現。而BA與不同濃度NAA之組合促進花梗增長的效果較GA3差。 秋季為彩虹四季蘭盛花期,澆灌2次100 mg•L-1 BA可使抽梗數由4.4梗增加至7.1梗。於非盛花期之春季期間,對照組抽梗率僅為20%,經100 mg•L-1 BA處理提升抽梗率至100%,抽梗數增加3.7梗。低溫抑制花芽形成,施用BA促進假球莖上潛伏芽發育為花芽。冬季以4、6及8週30/25oC高溫處理可促進其開花,高溫配合400 mg•L-1 BA使抽梗率提升,到花天數減少。以6週高溫+400 mg•L-1 BA達83.3%-91.7%抽梗,並可使四季蘭於春節期間開花。 本研究歸結出彩虹四季蘭於不同季節中,處理BA及Kinetin的最適合濃度與施用方式,而配合GA3或NAA可減緩花梗畸形,冬季以高溫加BA共同調控,可達到開花表現佳而畸形率低之花期調節目標。 Cymbidium is the third most exported orchid group in Taiwan. It was mainly exported to South Korea. Cymbidium ensifolium is an important species among the group, which is an attractive potted plant with beautiful foliage and fragrant flowers. When blooming, its ornamental value increases. The main flowering seasons are summer and autumn (from July to October). In winter, low temperature disadvantages its reproductive growth. Thus, flowering regulation would enable more even production of flowering plants throughout the year, and help to increase its market value to enhance export competitiveness. The spiking and flowering of Cymbidium ensifolium ‘Rainbow’ could be promoted by N6-benzyladenine (BA) and Kinetin, however, the results varied by chemicals, concentrations, and methods of application. Season and temperature, moreover, affect its flowering performance. On inducing spiking and flowering of Cymbidium ensifolium ‘Rainbow’, BA was more effective than Kinetin and drenching had stronger effect than spraying. Higher concentration of BA usually caused shorten spike. Applying BA with various GA3 concentrations alleviated the reduced spike length caused by BA; the spike was lengthened as the concentration of GA3 increased. Among the treatments, 400 mg·L-1 BA +50 mg·L-1 GA3 resulted the best flowering performance. Application of BA and NAA, compared with BA and GA3, resulted in lower spike length. During the peak flowering season from August to October, drenching 100 mg·L-1 BA twice increased the number of spikes from 4.4 to 7.1 per pot. When 100 mg·L-1 BA was applied during the non-flowering season from March to May, the spiking rate increased from 20% to 100%, and the number of spikes increased 3.7 per pot. The formation of flower buds on pseudobulb was inhibited by low temperature; however, with BA treatment, latent buds differentiated into flower buds. In winter, 4, 6, and 8 weeks of high temperature treatment (30/25oC) promoted spiking. Under high temperature, application of BA increased the spiking rate and decreased the time to flowering. Six weeks at 30/25oC with BA application promoted the spiking up to 83.3%-91.7%. The plants were successfully regulated to flower in the Lunar New Year. In summary, the most optimal concentration and method of application of BA or Kinetin varied by season. The deformed spike caused by BA was moderated by subsequent application of GA3 or NAA. BA and high temperature treatment induced spiking even in the winter. As a result, combining these treatments can enhance the flowering performance and reduce the flowering abnormality in Cymbidium ensifolium ‘Rainbow’, and reach the goal of flowering regulation. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/76669 |
DOI: | 10.6342/NTU201601930 |
全文授權: | 未授權 |
顯示於系所單位: | 園藝暨景觀學系 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-105-R03628133-1.pdf 目前未授權公開取用 | 4.19 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。