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通过田间小区试验,研究了吡虫啉和种子质量比分别为6∶10000、9∶10000和12∶10000拌种处理对高产夏玉米幼苗生长及其保护酶活性的影响.结果表明:药种比为6∶10000处理幼苗株高、初生根长、次生根数、地上和地下部分鲜质量分别比对照增加了2.81cm、2.31cm、1.71、0.30g和8.28g,并较其他两个处理作用效果显著.与对照相比,药种比为6∶10000处理幼苗叶片和根可溶性蛋白含量分别提高了12.6%和27.9%,过氧化氢酶(CAT)活性分别提高了2.5%和11.5%,丙二醛(MDA)含量分别降低了26.3%和60.9%,超氧化物歧化酶(SOD)活性分别提高了19.7%和5.6%,谷胱甘肽转移酶(GSTs)活性分别提高了11.5%和13.2%,根过氧化物酶(POD)活性提高了31.8%.药种比为6∶10000处理除对叶片POD活性没有促进作用外,能够显著提高其他相关酶的活性.
Field experiment was conducted to study the effects of dressing with imidacloprid and seed at 6: 10000, 9:10000 and 12:10000 seed dressing treatments on the growth and the activities of protective enzymes of high-yield summer maize seedlings. The results showed that: The results showed that the seedling height, primary root length and secondary root number of seedlings increased by 2.81cm, 2.31cm, 1.71, 0.30g and 8.28g, respectively, compared with the control, which were significantly higher than the other two treatments. Compared with the control, the content of leaf soluble protein and soluble protein in seedlings increased by 12.6% and 27.9%, CAT activity increased by 2.5% and 11.5% MDA content decreased by 26.3% and 60.9%, respectively. The activity of superoxide dismutase (SOD) increased by 19.7% and 5.6%, and the activity of glutathione transferase (GSTs) increased by 11.5% and 13.2% The activity of peroxidase (POD) increased by 31.8%. The ratio of 6:10000 could significantly increase the activities of other related enzymes, except that it did not promote the POD activity of leaves.