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长梗润楠(Machilus longipedicellata)是西南地区的特有树种之一,也是优良的绿化树种。以长梗润楠为试材,采用U_7(7~6)方法,研究了IBA、NAA、IAA对长梗润楠扦插生根的影响。结果表明:扦插9个月时,平均愈伤组织产生率、生根率、一级根数、一级根长和一级根直径分别为78.9%~85.6%、84.5%~92.2%、2.7~3.7条·株~-1、9.7~14.6cm和1.22~1.58mm;0.75g·L~(-1) IAA+0.4g·L~(-1) IBA组合的生根率、平均一级根数、一级根直径和根长分别达85.5%、3.5条·株-1、1.58mm和13.5cm,为生根性状综合指标较优的处理组合。穗条的生根率与愈伤组织产生率间呈极显著正相关(P≈0.000<0.01),二者的相关模型为Y=26.846+0.629 X(R2=0.506,R2Adj=0.484)。
Machilus longipedicellata (Machilus longipedicellata) is one of the endemic species in southwest China, is also an excellent afforestation species. The results showed that the effects of IBA, NAA and IAA on the rooting of S. incisum were studied using U7 (7 ~ 6) method. The results showed that the average callus production rate, rooting rate, first root number, first root length and first root diameter were 78.9% ~ 85.6%, 84.5% ~ 92.2%, 2.7 ~ 3.7 The rooting rate, the average primary root number, the average primary root number, the average primary root number in the combinations of IBA, -1.9.7 ~ 14.6cm and 1.22 ~ 1.58mm, 0.75g · L -1 IAA + 0.4g · L -1 IBA The root diameter and root length of root were 85.5%, 3.5 · -1, 1.58mm and 13.5cm, respectively. There was a significant positive correlation between the rooting rate of callus and the rate of callus (P≈0.000 <0.01). The correlation model was Y = 26.846 + 0.629 X (R2 = 0.506, R2Adj = 0.484).