烯效唑浸种对玉米壮苗的形态效应

研究了烯效唑浸种对玉米苗期形态特征的影响.结果表明:烯效唑对叶片和叶鞘的伸长生长有明显的抑制作用,第7叶时抑制效应明显减弱,且抑制效应随浓度的增大而增强.但烯效唑处理的植株粗壮,比叶重、叶宽和茎基宽增加,根数增多,根长显著高于对照,根于重增加,根冠比和苗粗壮度提高,表现出明显的壮苗长相;对根系的促进作用10～40 mg/kg范围内随浓度增大而增强,当浓度达到80 mg/kg时,促进作用显著减弱。

Morphological Effect of Soaking Seed with Uniconazole on High Quality Seedling of maize

The effects of soaked seeds with different concentrations of uniconazole on the growth of maize seedlings were studied.The results were showed as follows.The elongation of leaf blades and leaf sheaths of the treated plants was inhibited at third to seventh leaf stage,the inhibiting effect diminished at seventh leaf stage,and the higher of the concentration,the stronger of the effect.At the same time,as compared to the control,the plant in S-3307-treatment showed an appearance of high quality plant with increased specific leaf weight,leaf width and stem thickness as well as root number and root length,the root dry weight.