大叶黄杨在关中地区的扦插成活率研究

The study on cuttage survival rate of Euonymus japonicus in Guanzhong area

以大叶黄杨为试验材料,探究了在关中地区进行扦插繁殖时,不同扦插季节和3种植物生长调节剂处理对扦插成活率的影响,以完善大叶黄杨的繁殖方法,更好地应用于园林植物的繁殖上。试验结果表明:冬季比夏季扦插成活率高,其中夏季扦插的枝条成活率为60.4%、冬季为88.2%,冬季比夏季扦插的枝条成活率提高46.0%;在植物生长调节剂处理中,100mg/L IBA处理的扦插成活率明显高于100mg/L NAA和4mg/L 2,4-D处理,其中IBA浓度为100mg/L时处理效果最优,成活率达92.2%,其次是4mg/L 2,4-D处理,成活率达86.8%,100mg/L NAA处理的生根率相对较低,成活率达80.6%,但均达到了80%以上,都比空白对照的成活率(73.2%)高。试验结果揭示了季节与植物生长调节剂对大叶黄杨繁殖的影响,可为大叶黄杨的营养繁殖提供借鉴。

In order to improve the breeding methods of Euonymus japonicus, and better ap- ply them into garden plant breeding, Euonymus japonicus in Guanzhong area was taken as experimental material, and we explored the effect of cutting season and three kinds of growth hormone treatments on cutting survival rate of Euonymus japonicus. The results showed that： the cuttage survival rate in winter （88.2%）was 46.0% higher than that in summer （60.4%）. in hormone treatment tests, the cuttage survival rate treated by 100 mg/L IBA was significantly higher than that by 100 mg/L NAA and 4 mg/L 2,4 - D. When the concentration of IBA was 100 mg/L, the effect was the best, with the survival rate of 92. 2%, which was followed by the treatment of 4 mg/L 2,4 -D, the survival rate of which was 86.8% the rooting rate of 100 mg/L NAA was relatively low, and the survival rate was 80.6%. The survival rates of all three treatments were above 80 %, which was higher than that of the con- trol as 73.2%. The test results revealed the effect of season and hormones on Euonyrnus ja- ponicus breeding, which provided valuable reference for the vegetative propagation of Euon- ymus japonicus.