山苦茶扦插繁殖技术

Cutting Propagation of Mallotus furetianus(Miq.) Muell.Arg

以五指山野生的1～2年生的山苦茶木质化枝条为扦插材料,利用不同浓度(100、400、800 mg/L)的根旺、IBA、NAA、IAA浸泡3类插穗(长度都约为10 cm,直径分别为0.20～0.40、0.45～0.70、0.75～1.00 cm)基部,时间为0.5、2.0、8.0 h;扦插基质为河沙。结果表明,不同处理间扦插生根率和生根数与对照组相比,均存在显著差异,以直径为0.45～0.70 cm的插穗的插条的生根效果最好;单一生长调节剂的处理中,以根旺及IBA的效果最好,生根率达到50%以上;不同浓度的生长调节剂处理中以800 mg/L的IBA效果最好,生根率达到60%,生根条数13条;3种处理时间中以0.5 h的生根效果最好。

Mallotus furetianus is a wild tea plant of great development value.Cutting propagation of M.furetianus was conducted with young lignified shoots（1～2 years old）of M.furetianus naturally grown in Wuzhishan as the cutting material and sand as the culture medium.The shoot fragments of different size（length of about 10 cm,diameter of 0.20～0.40,0.45～0.70,0.75～1.00 cm）were soaked in Gen Wang,IBA,NAA,IAA using different concentrations（100,400,800 mg/L）of different time（0.5,2.0 and 8.0 h）.The results showed that the treatments of the cuttings with length of about 10 cm and diameter of 0.45～0.70 cm produced the best results;the highest rooting rates（50% or more）produced with Gen Wang or IBA;Of the different concentrations of growth regulator treatments,800 mg/L of IBA was optimal with the rooting rate of 60% and average root number of 13;and the best rooting treatment was dipping or soaking the base of cuttings in the solutions for 0.5 h.