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

    摘要
  • 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。

     

    Abstract: Effects of rooting powder on the rooting of the cutting of Taxus chinensis var.mairei were studied.The results show that rooting powder A3 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 A2,Gibberellin is the poorest.The experiment of concentration show that no significant difference is observed between various concentrations for A2 and A3 except the concentration of 20ng/kg for A1.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 A2.It is possible that the increment of the applied concentration of A1 and A2 will increase the rooting efficiency.

     

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