TDZ脉冲处理对‘索邦’百合切花保鲜效果的研究

Study on the Preservative Effect of TDZ Pulse Treatments on Cut Flower of ‘Sorbonne’ Lily

将‘索邦’百合在不同浓度TDZ溶液中脉冲处理24h后进行瓶插试验,对切花寿命、最大花径、花枝鲜重变化率、叶片叶绿素含量、花朵呼吸速率及乙烯释放速率等指标进行测定。结果表明:适当浓度的TDZ脉冲处理对百合切花保鲜具有明显的促进作用,100μmol/LTDZ处理效果最为显著。与对照相比,处理的切花瓶插寿命延长1.2d;最大花径增加1.56cm、形成时间延后1.6d;花枝鲜重变化率可高出对照10.12%;叶片叶绿素含量能够长时间保持较高水平,比对照高2.01倍;花朵的呼吸高峰与乙烯释放高峰均推迟2d出现,呼吸峰值比对照降低0.53倍,乙烯释放峰值比对照低2.39倍。

The preservative effect of TDZ pulse treatment on cut flower of ‘Sorbonne’ lily were studied,the cut flower life,maximal diameter of flower,change rate of fresh weight,chlorophyll content,flower respiration rate and ethylene production were determined.The results showed that appropriate concentration of TDZ pulse treatment had significant effect on preservation of ‘Sorbonne’ lily cut flower,especially 100μmol/L TDZ pulse treatment.Compare to control,100μmol/L TDZ pulse treatment could extend the vase life of flowers by up to 1.2d,and make the maximal diameter of flower increased by 1.56cm as well as delay the forming time by 1.6d.Furthermore,the change rate of fresh weight overtopped the control by 10.12%.Besides,the cut flowers pulsing with 100μmol/L TDZ could maintain a higher level chlorophyll content for a period with a rising trend,and the peak of respiration and ethene release were postponed by 2d,breathing peak lower 0.53times than control,ethylene release peak lower 2.39 times than control.