PP_(333),CCC,B_9喷施对彩色马蹄莲矮化效应的研究

DWARFING EFFECTS OF PACLOBUTRAZOL,CHLORCHOLINCHLORID AND DAMINOZIDE FORLIAR SPRAYS ON Zantedeschia hybrida

采用多效唑(PP333)、矮壮素(CCC)和B93种植物生长延缓剂对彩色马蹄莲(Zantedeschiahybrida)2个三角叶型品种‘Golden chalice’和‘Fire glow’以及2个窄叶型品种‘Lip stick’和‘Garnetglow’进行不同浓度喷施处理,研究植物生长延缓剂对彩色马蹄莲的矮化效应。结果表明:各品种对不同药剂处理响应不同,同种药剂各浓度处理间无明显规律性。3种生长延缓剂对抑制4个品种的株高生长,提高其叶片叶绿素含量都能起到良好的效果。根据冠幅、叶长、叶宽、花梗长、花梗粗等观赏性状综合比较来看,PP3331500mg/L处理对‘Golden chalice’各性状均起到明显抑制作用,矮化效果较好;而CCC 250mg/L处理对‘Fire glow’和‘Lip stick’矮化效果最好;B91000mg/L处理对‘Garnet glow’矮化效果较好,各性状抑制程度与对照相比差异均达到显著水平。总之,彩色马蹄莲品种间差异较大,无法筛选特定的生长延缓剂进行统一调控,但是,3种药剂对4个品种都有矮化效应,在生产中进行适宜浓度喷施可作为调控株型,提高盆栽质量的重要手段。

Dwarfing effects of the plant growth retardant on Zantedeschia hybrida were investigated by foliar sprays of paclobutrazol（PP333）,chlorcholinchlorid（CCC） and daminozide（B9） at four concentrations on two triangle leaf type cultivars ＇Golden chalice＇ and ＇Fire glow＇,as well as two narrow leaf type cultivars ＇Lip stick＇ and ＇Garnet glow＇.Results indicated that all the three plant growth retardants showed favorable effects on inhibiting plant height and increasing leaf chlorophyll content in four cultivars.However,no significant regularity existed among different treatments using the same plant growth retardant,and each cultivar showed various responses to different retardants.According to the statistics on the ornamental traits of crown width,leaf length,leaf width,peduncle length and peduncle thickness,the application of 1500 mg/L PP333 was the most effective treatment on inhibiting the growth of all the ornamental traits in ＇Golden chalice＇.The 250 mg/L CCC treatment had the best dwarfing effect on ＇Fire glow＇ and ＇Lip stick＇,while the spraying of 1000 mg/L B9 did best for dwarfing ＇Garnet glow＇,which could achieve significant difference level compared with control.Large differences of habits were observed among the cultivars of Zantedeschia hybrida.Thus the same concentration and plant growth retardant are not fit for all of the cultivars.However,all the three retardants can be used for regulating plant architecture and improving potting quality of Zantedeschia hybrida with reasonable concentration.