母株年龄和生长调节剂对俄罗斯大果沙棘嫩枝扦插生根的影响

Effects of donor tree ages and plant growth regulators on the softwood cutting propagation of Hippophae rhamnoides

研究了母株年龄、植物生长调节剂与其浓度对俄罗斯大果沙棘嫩枝扦插生根效果的影响。结果表明:所有因素对插穗生根率、生根数与平均根长均影响极显著(P<0.01);母株年龄为1年生插穗的生根效果好于2年生,植物生长调节剂NAA优于IBA与ABT2,植物生长调节剂的浓度以200mg/L为最佳。使用200mg/L的NAA处理1年生大果沙棘的嫩枝插穗30min可以达到最优的生根效果,生根率、生根数与平均根长分别为88.87%、10.8条/穗和10.47cm。同时,因素之间的交互效应对大果沙棘的嫩枝扦插生根具有显著影响,母株年龄与植物生长调节剂的交互效应显著影响大果沙棘扦插的生根率,植物生长调节剂种类与浓度、母株年龄与植物生长调节剂浓度的交互效应对大果沙棘扦插的生根率、生根数与平均根长均具有极显著影响。母株年龄与植物生长调节剂与浓度的交互效应对生根率具有极显著影响。

The rooting effects of donor plant age,plant growth regulators and their concentrations on stem cuttings from Russian seabuckthorn were investigated.The factors mentioned above were highly significant（P0.01） for all studied parameters and the rooting effects of stem cuttings form 1-year-old donor tree were better than from 2-year-old one.NAA was more effective than IBA and ABT2among plant growth regulators and the 200 mg/L concentration of plant growth regulator was the best.Overall,applying 200 mg/L concentration of NAA to treat 1-year-old donor tree cuttings for 30 min could achieve the best rooting,with the rooting rate,root number and average root length being 88.87%,10.8 item/panicle and 10.47 cm,respectivly.Meanwhile,the interaction among the factors also had significant effects on rooting of softwood cuttings.The interactive effects of donor age×plant growth regulators were significant for percent rooting.The interactive effects of plant growth regulators×concentration and age×plant growth regulator concentration were highly significant for percent rate,root number and average root length.The interactive effects of donor tree age×the concentration of plant growth regulators×plant growth regulators were highly significant for rooting rate of H.rhamnoides.