不同植物生长调节剂对穴盘茄子幼苗生长的影响

Effects of Different Plant Growth Regulators on Eggplant Growth of Plug Seedling

为筛选出适合茄子浸种处理的植物生长调节剂和最佳浓度,试验采用穴盘育苗,以圆茄‘京茄一号’和长茄‘京茄黑龙王’为试材,设置多效唑(100、150 mg/L)、缩节胺(600、800 mg/L)2种不同浓度的植物生长调节剂进行浸种处理。结果表明:多效唑比缩节胺更有效降低2种茄子幼苗的下胚轴和株高,并且能够显著提高幼苗的地下部干鲜重、壮苗指数、G值、根系活力和叶绿素含量;相对于圆茄,多效唑和缩节胺对长茄的抑制效果更大。因此在茄子穴盘育苗下,适宜圆茄‘京茄一号’浸种处理的是150 mg/L浓度的多效唑,适宜长茄‘京茄黑龙王’浸种处理的是100 mg/L浓度的多效唑。

A plug seedling experiment was conducted to select the suitable plant growth regulator and determine its optimum concentration. Two plant growth regulators and two eggplant varieties（‘Jingqie No.1’,globe eggplant variety and‘Jingqie Heilongwang’, long eggplant variety） were used as experimental materials.The plant growth regulators were paclobutrazol and mepiquat chloride, and the concentration of paclobutrazolwas 100 and 150 mg/L, while the concentration of mepiquat chloride was 600 and 800 mg/L. Before beingsown, the seeds were socked in plant growth regulator, and the hypocotyl, plant height, biomass, G value, rootactivity and chlorophyll content of the plant were determined. The results showed that, compared with usingmepiquat chloride, hypocotyl and plant height were reduced by using paclobutrazol. Meanwhile, the biomass ofroot, seedling index, G value, root activity and chlorophyll content of plant were increased by usingpaclobutrazol. There were more inhibition effects of the two plant growth regulators on‘Jingqie Heilongwang’than that on‘Jingqie No.1’. In conclusion, the optimum concentration for‘Jingqie No.1’was 150 mg/L ofpaclobutrazol, and the optimum concentration for‘Jingqie Heilongwang’was 100 mg/L of paclobutrazol.