植物生长调节剂浸种对玉米种子萌发及幼苗生长的影响

Effect of Plant Growth Regulator on Germination and Seedling Growth of Different Maize Varieties

为探究不同生长调节剂浸种对3个玉米杂交种的处理应用效果,以4种生长调节剂赤霉素(200 mg/L)、矮壮素(500 mg/L)、多效唑(200 mg/L)、乙烯利(200 mg/L)分别处理3个玉米杂交种青农8号、郑单958、农大108,研究不同生长调节剂对玉米种子发芽和形态指标的影响。结果表明,不同生长调节剂对3个玉米品种具有不同的调节作用,赤霉素浸种可以促进郑单958和农大108的发芽率,多效唑浸种对青农8号的第二叶宽和根鲜重及根干重具有促进作用,可根据研究目的选择最佳处理方法。

To explore the effects of different growth regulators on three maize varieties, four plant growth regulators including gibberellin（200 mg / L）,chlormequat chloride（500 mg / L）,paclobutrazol（200 mg / L） and ethephon（200 mg / L） were used on three maize varieties Qingnong No. 8,Zhengdan 958 and Nongda 108. Effect of different growth regulators on the seed germination and morphological index of maize were studied. The results showed that different plant growth regulators had different effect on three maize varieties. Gibberellin was beneficial to the improvement of the germination percentage of Zhengdan 958 and Nongda 108. Paclobutrazol could increase the second leaf width, root fresh weight and root dry weight of Qingnong No.8. Best seed soaking method can be selected based on research purpose.