南方红豆杉扦插繁殖技术研究——Ⅳ.促根剂对扦插穗条生根的影响  

Studies on the cutting propagation of Taxus chinensis var.mairei.Ⅳ.Effects of rooting powder on the rooting of the cutting

作　　者：傅瑞树 黄琦 孙晓冬 黄雪羚 徐鹭霞 

机构地区：[1]福建省三明市林业局,三明365000 [2]福建省三明林业学校,三明365000

出　　处：《中国生态农业学报》2005年第3期178-180,共3页Chinese Journal of Eco-Agriculture

基　　金：福建省林业厅重点项目资助

摘　　要：试验研究促根剂对南方红豆杉扦插穗条生根的影响结果表明,促根剂A3生根效果最佳,其始根天数、生根率、根数、根长和根系效果指数分别为52.7～64.0d、90.0%～93.7%、8.00～8.67条、8.67～8.93cm和0.61～ 0.69,显著优于其他3种促根剂;其次为促根剂A2＞促根剂A1＞萘乙酸(对照).除20ng/ kg浓度促根剂A1所得根系效果指数显著高于10ng/ kg和15ng/ kg浓度外,促根剂A2和A3各浓度间差异不明显,但20ng/ kg浓度促根剂A2根系效果指数也高于其他2个浓度,提高促根剂A1和A2的应用浓度有望提高扦插穗条生根效果.Effects of rooting powder on the rooting of the cutting of Taxus chinensis var.mairei were studied.The results show that rooting powder A_3 is the best,the days of first root appearance,rooting rate,number of root,length of root and index of root system for A_3 are 52.7～64.0d,90.0%～93.7%,8.00～8.67,8.67～8.93cm and 0.61～0.69,which are much better than those of the other three types of rooting powder.The second is the rooting powder A_2,Gibberellin is the poorest.The experiment of concentration show that no significant difference is observed between various concentrations for A_2 and A_3 except the concentration of 20ng/kg for A_1.But a significant difference in index of root system is observed between the concentrations of 20ng/kg and 15ng/kg or 20ng/kg and 10ng/kg.The concentration of 20ng/kg is better than the other two concentrations for A_2.It is possible that the increment of the applied concentration of A_1 and A_2 will increase the rooting efficiency.

关 键 词：南方红豆杉 扦插繁殖 促根剂 穗条 生根率 

分 类 号：S791.49[农业科学—林木遗传育种]