不同浓度ABT对高寒地区朝鲜黄杨无性系插穗成活率的影响

[目的]筛选适合高寒地区朝鲜黄杨插穗扦插繁殖的最佳ABT浓度。[方法]对沈阳、丹东、大连3个种源地的朝鲜黄杨优选单株进行了扦插试验,研究0(CK)、50、60、70 mg/kg浓度水平的ABT对朝鲜黄杨插穗成活率的影响。[结果]沈阳、丹东、大连3个种源地插穗扦插成活率分别为63.80%、65.37%、63.25%;对不同浓度ABT来说,分种源看,60 mg/mg ABT的插穗生根效果最好,生根率分别为78.70%、73.90%、71.20%,平均达到74.60%。在0.05显著性水平下,种源对插穗成活率无显著影响,不同ABT浓度处理对插穗成活率影响显著。[结论]60 mg/kg ABT处理12 h的朝鲜黄杨插穗生根效果最好。

Effects of Different Concentrations of ABT on Survival Rate of Cuttings of Buxus microphyllavar.koreana in Alpine Region

[Objective] To screen the optimum ABT concentration for cutting propagation of Buxus microphyllavar.koreana in Alpine Region.[Method]The cutting experiment of preferred individual plant of Buxus microphyllavar.koreana in Shenyang,Dandong,Dalian selected 3 provenances were studied,the effects of 0 (CK),50,60 and 70 mg/kg concentrations of ABT on the survival rate of Buxus microphyllavar.koreana cuttings were studied.[Result] Shenyang,Dandong,Dalian 3 provenances of cuttage survival rate were 63.80％,65.37 ％,63.25 ％,respectively.For different concentrations of ABT and provenances,the rooting rate of cuttings at the concentration of60 mg/mg ABT was the best,and the rooting rates were 78.7％,73.90％ and 71.20％,respectively,with an average of 74.60％.At 0.05 significant level,provenances had no significant effect on the survival rate of cuttings,and the effects of different ABT concentrations on the survival rate of cuttings were significant.[Conclusion]The rooting rate of 60 mg/kg ABT treated with 12 h was the best.