Effects of Different Treatments on Rooting of the Softwood Cutting from Blueberry

[Objective] To study the effects of different hormones combinations,concentrations and media on the rooting of different blueberries.[Method] The softwood cuttings of five cultivars of blueberries were treated with different concentrations of NAA and IBA(300,500,700 and 1 000 mg/L) and different cultivated media,and their rooting rate and rooting effect were compared.[Result] The best substrate for the rooting of softwood cutting of all five blueberry cultivars was the mixture of mycorrhiza soil and perlite at the proportion of 1∶ 1(V/V).Among the rooting reagent treatments with different concentrations of NAA and IBA,700 mg/L NAA and IBA at the concentration proportion of 2∶ 5 was the best for the rooting rate and quality of the cultivars of Fenlan,Canlan,Yuanlan and Jinghua,which were 79% and 42.13,97.3%s and 51.76,55.7% and 30.36,80.5% and 43.14,respectively,whereas 500 mg/L NAA and IBA at the concentration proportion of 2∶ 3(C/C) was the best for Jietu,whose rooting rate and rooting quantity were 70.6% and 37.71.[Conclusion] Different kinds of hormone and their propotions affected the softwood cutting of different blueberry cultivars to different extents.