植物生长调节剂对黑珍珠莲雾扦插生根的影响

摘要

An L9 (33) orthogonal experiment was used to optimize the conditions for the sticking of Syzygium samarangense.The results showed that the highest root survival rate could be reached if the growth regulator,IBA,was applied at 400 mg · L-1 for 10 min; the greatest number of roots was found when the application was 600 mg · L-1 for 10 min; and,the longest average root length was achieved when the application was 400 mg · L-1 for 30 min.It was concluded that the most desirable overall effect,i.e.,a root survival rate of 90％,16.6 roots per plant,and 7.43 cm in root length on average,could be obtained with a pre-soaking of S.samarangense cutting in a 400 mg · L-1 IBA solution for 10 min prior to the sticking.%采用3种不同植物生长调节剂吲哚丁酸(IBA)、萘乙酸(NAA)、生根粉(ABT)及其浓度(200、400、600mg·L-1)和处理时间(10、20、30min)3因素3水平进行L9 (33)正交试验,研究黑珍珠莲雾扦插的影响因素,结果表明:获得成活率最高的最佳水平是种类IBA,浓度400mg·L-1,时间10 min;获得生根数最多的最佳水平是种类IBA,浓度600mg·L-1,时间10min;获得平均根长最长的最佳水平是种类IBA,浓度400mg·L-1,时间30 min.试验结果表明:将插穗预先在浓度为400 mg·L-1的IBA溶液中浸泡10 min生根效果最佳,其平均成活率为90％,平均根数为16.6条,平均根长为7.43 cm.