圆头蚊母扦插繁殖试验

Cuttage Propagation Experiment on Distylium buxifolium(Hance)Merr.var.rotundum H.T.Chang

将吲哚乙酸、萘乙酸和2,4-二氯苯氧乙酸分别配成500、1 000、1 500和2 000mg/L4种不同的浓度,于春、夏季对圆条蚊母插条进行促根处理,并以清水为对照,以期寻找提高圆头蚊母扦插成活率的措施。结果表明:3种不同的生根剂及同一生根剂的不同浓度处理枝条后对扦插生根率的影响都存在显著差异。吲哚乙酸(IAA)和萘乙酸(NAA)能提高插条生根率,2,4-二氯苯氧乙酸(2,4-D)则起到抑制作用。以500mg/L的IAA浸30s的半硬枝扦插生根率最高,达78%。

Three different rooting agent of indoleacetic acid, naphthylacetic acid, 2,4-dichlorphenoxyacetic acid were executed in four different concentrations in this experiment. Promoting root treatment of cuttings of Distylium buxifolium （Hance）Merr. var. rotundum H. T. Chang was made in spring and summer respectively, with water as control in order to search measures improve the survival rate for Distylium buxifolium （Hance） Merr. var. rotundurn H.T. Chang cutting. The results showed that the effect on rooting rate had singnificant difference among three different rooting stimulations or one rooting stimulation in different concentrations. IAA and NAA could promote rooting rate, 2, 4-D played inhibition. Among all the treatment, after 30 s soaking in 500 mg/L IAA the semihardwood cutting rooting rate was the highest,over 78 %.