【摘要】 以八仙花12、a生组织培养苗为试验对象,研究了多效唑不同浓度、不同施药时间、不同施药次数对八仙花组培苗促成栽培中其植株营养生长及成花的影响。结果表明:施用浓度和时间是多效唑抑制八仙花组培苗植株营养生长促进其生殖生长的关键,7月中旬以浓度100~150mg/L的多效唑溶液对八仙花1、2a生组织培养苗进行叶面喷施,最有利于其花芽分化,成花率高,且从株型、花形花色等各项指标综合考虑,多效唑对促进八仙花2a生组培苗成花效果更显著。施药次数也影响八仙花组培苗营养生长和成花,连续施药3次对抑制其营养生长促进成花效果最佳。更多还原

【Abstract】 The effects of PP333 with different concentrations,different application time and frequencies on vegetative growth and flowering induction of Hydrangea Macrophylla’s tissue culture plantlet were investigated.The results indicated that application concentration and time of PP333 were key factors in restraining vegetative growth and promoting reproductive growth of Hydrangea Macrophylla’s tissue culture plantlet.The leaf surfaces of the one and two years old of Hydrangea Macrophylla’s tissue culture plantlet were sprayed by PP333 solution(concentration:100～150mg/L) in Mid-July.Test proved that flower bud differentiation was best and the ratio of flowering stems was high.And,considering the parameters of example plant type,hanagata and colors of flowers etc.,it is concluded that the effect of promoting fiowering induction is even more remarkable to the two years old of Hydrangea Macrophylla’s tissue culture plantlet by PP333.Besides,application frequency of PP333quitely influenced vegetative growth and flowering induction of Hydrangea Macrophylla’s tissue culture plantlet.It was best to restraining vegetative growth and advancing flowering induction by continuous application of three times.更多还原