The Physiological Effect of Pyraclostrobin Seed Dressing on the Seed and the Seedling Growth of Maize

[Aims] The paper aims to study the effects of pyraclostrobin seed dressing on the seed activity and the seedling growth of maize. [Methods] Through the sand bioassay experiment in light incubator, the Effects of pyraclostrobin seed dressing on the seed activity and the seedling growth of maize were studied. [Results] Comparing with the contrast, 2.5:10 000 ratio seed coating agent made the corn seed germination potential, germination rate,germination index and vigor index increased by 4.71, 17.4, 17.4 and 4.71% respectively, corn seedling plant height,taproot length, root number, fresh weight per plant, root-shoot ratio were increased by 0.12 cm, 1.28 cm, 0.71, 0.15 g,1.38, pyraclostrobin seed dressing can increase the maize seedling’s chlorophyll content, the root activity, the soluble sugar content and the activity of a-amylase. [Conclusions] Pyraclostrobin seed dressing can promote growth of the maize seed and seedling obviously.