植物生长延缓剂对盆栽月季矮化效果的研究

摘要

Using the potted rose Chunzhiwu as experimental material,this experiment studied the influence of plant growth retardants paclobutrazol(PP333),chlorcholinchlorid(CCC),and mepiquat chlorride(DPC)on potted rose.The result showed that in a proper concentration range,the dwarfing result of plant growth retardants at a high concentration was better than at a low concentration.At a specific concentration,the dwarfing result by root renching was better than by leaf spraying.The dwarfing results of root drenching with 300 mg/L PP333 and leaf spraying with 700 mg/L PP333 were better; contrast to CK (treated by water),the two treatments shortened the internode length by 44.51％/45.70％,dwarfed plant height by 38.09％/39.92％,increased the plant chlorophyll content by 35.64％/34.65％ and soluble sugar content by 15.87 ％/30.95％,and promoted the SOD activities by 57.10％ /120.64％ and POD activities by 36.01％/106.83％.These treated plants revealed compact shape,even green leaves,and their appearance for viewing was improved.%以盆栽月季春之舞为试材,研究了多效唑(PP333)、矮壮素(CCC)和缩节胺(DPC)3种植物生长延缓剂对盆栽月季的矮化效果.结果表明:在适宜浓度梯度范围内,随着植物生长延缓剂施用剂量的加大,矮化效果增强.在浓度相同条件下,灌根比叶喷矮化效果好.其中300 mg/L PP333灌根和700 mg/L PP333叶喷处理的月季节间长分别比清水对照缩短44.51％和45.70％、株高降低38.09％和39.92％、叶片中叶绿素含量增加35.64％和34.65％、可溶性糖含量增加15.87％和30.95％、超氧化物歧化酶(SOD)活性提高57.10％和120.64％、过氧化物酶(POD)活性提高36.01％和106.83％.300 mg/LPP333灌根和700 mg/LPP333叶喷处理月季矮化效果最好,叶色浓绿,株型饱满,观赏价值更高.