Effects of different materials,exogenous hormones and cuttage time on cuttage seedling of Camellia oleifera

【Objective】Effects of different materials,exogenous hormones and cuttage time on cuttage seedling of Camellia oleifera were studied to provide references for improving survival rate of cuttage and propagation.【Method】Three materials of sand,garden soil(1∶1)and the mix of sand and garden soil were used.Nine treatments of naphthylacetic acid(30,60 and 90mg/L),heteroauxin(200,350 and 500 mg/L)and rooting powder(30,50 and 100 mg/L)were designed.Samples of Camellia oleifera obtained on 4 days(20thSep,30thOct and 28thNov in 2011 and 16thJan in 2012)were chosen for cuttage treatment to record the number of terminal buds,lateral buds,lateral roots and the length of lateral roots and survival rate,after which cuttage seedling effects were analyzed.【Result】The results showed that effects of cottage were the best in sand,where the number of terminal buds,lateral buds,lateral roots and the length of lateral roots and survival rate were higher than those in the mix of sand and garden hill and in garden hill.Different hormones and treatments produced different results.The maximum average number of terminal buds was 0.55 under 30 mg/L NAA,200 mg/L IAA and 50 mg/L ABT.The maximum average number of lateral buds was 0.93 under 30 mg/L NAA.The number of lateral roots was 2.77 and the length of lateral roots was 0.63 cm under 100 mg/L ABT.The survival rate was 76.15% under 200 mg/L IAA,which was obviously higher than that under other treatments.The effect of cuttage was the best on Jan 16th,2012 and was suboptimal on Sep 20th,2011 and the effect was the worst on Nov 28th,2011.【Conclusion】When camellia cuttings are treated with three exogenous hormones of 30mg/L NAA,200 mg/L IAA and 50 mg/L ABT separately and cut in the greenhouse with sand as material,spring and winter cutting all can yield cutting seedlings with good quality.