Primary Report on the Propagation Experiment of Catalpa bungei by Twig Cutting
[Objective] The aim was to supply foundation for promoting the exploitation and popularization of Catalpa bungei. [Method] Four factors such as hormone kinds, cutting medium, hormone concn. and treatment time were used to conduct the seedling-raising experiment of C. bungei by twig cutting so as to discuss the main factors affecting its rooting. [Result] With perlite as cutting medium, the rooting effect was best, with rooting rate of 17.77%. The rooting effect of treating by 500 mg/kg ABT1 rooting powder was better, with rooting rate of 11.93%. The treatment time of 120 min was good, with rooting rate of 14.17%. The effect of cutting medium on rooting was biggest and the secondary were treatment time and hormone concn. The average rooting rates of treatments of 3 hormones at various concn. in order were IBA ＞ ABT1 rooting powder ＞ NAA and the rooting rate reduced along with the increment of concn. Compared with CK, the rooting rates of C. bungei cuttings treated by ABT1 rooting powder and 500 mg/kg IBA for 2 h were increased 82.6% and 87.4% resp. [Conclusion] With perlite as cutting medium, the rooting effect of treating tender C. bungei cutting by 500 mg/kg ABT1 rooting powder for 2 h was best, with rooting rate of 30.8%.
国家科技期刊平台
NSTL
万方数据
维普
