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当前位置: 首页 > 文章 > IBA浓度和使用方法对高山杜鹃‘Nova Zembla’扦插生根的影响 中国农学通报 2018 (14) 75-80
Position: Home > Articles > Effect of IBA Concentration and Application Method on Rhododendron 'Nova Zembla' Cutting Propagation Chinese Agricultural Science Bulletin 2018 (14) 75-80

IBA浓度和使用方法对高山杜鹃‘Nova Zembla’扦插生根的影响

作  者：
蔡艳飞;宋杰;李世峰;李树发
关键词：
高山杜鹃;扦插繁殖;生根率
摘  要：
高山杜鹃是世界著名的观赏植物,但扦插繁殖困难,限制了其在园林中的应用。为探明IBA浓度和使用方法对高山杜鹃扦插生根的影响,本研究以高山杜鹃品种‘Nova Zembla’为材料,开展不同IBA浓度和使用方法组合的生根试验。结果表明:IBA对高山杜鹃的扦插繁殖有显著影响。IBA浓度在0~15000 mg/L范围内,生根率随IBA浓度的增加而增加,且当IBA浓度>10000 mg/L时,生根率达95%以上;在相同的IBA浓度下,固态IBA处理比液态IBA处理的生根率高;采用200 mg/L的IBA浸泡插穗24 h后,高山杜鹃的生根率达到70.79%;在插穗基部的皮层和形成层间进行愈伤有助于提高生根率。研究结果表明扦插繁殖是高山杜鹃进行大规模商业化育苗的可行方法。该结果对加快国内高山杜鹃产业化具有一定意义。
译  名：
Effect of IBA Concentration and Application Method on Rhododendron 'Nova Zembla' Cutting Propagation
作  者：
Cai Yanfei;Song Jie;Li Shifeng;Li Shufa;National Engineering Research Center for Ornamental Horticulture;Flower Research Institute, Yunnan Academy of Agricultural Sciences;Key Lab of Yunnan Flower Breeding;
关键词：
Rhododendron;;cutting propagation;;rooting percentage
摘  要：
Rhododendron is one of world-famous ornamental plants. However, its cutting propagation is difficult, which restricts its application in the landscape. To explore optimal propagation techniques by cutting propagation, the authors studied the effects of different IBA concentrations and application methods on Rhododendron'Nova Zembla'cutting propagation. The results showed that IBA concentration and application method significantly affected the cutting propagation of Rhododendron. In the range of 0 to 15000 mg/L IBA,the rooting percentage increased with the increasing of IBA concentration, and the rooting percentage was more than 95% when IBA concentration was over 10000 mg/L. Under the same IBA concentration, the stem cuttings treated with powder state IBA rather than liquid state IBA had higher rooting percentage. The stem cuttings soaked for 24 hours at 200 mg/L IBA had the rooting percentage of 70.79% . The rooting was also promoted by making a slice wound between cortex and cambium layers along the side of the bottom. This study suggests that the cutting propagation is a feasible method for the commercial cultivation of Rhododendron, and has significantly influence on its industrial development.

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