缩节胺、多效唑和矮壮素对向日葵生理特性的影响

为使用化控技术塑造合理株型，通过不同浓度缩节胺、多效唑和矮壮素对食用向日葵生理特性分析，研究植物调节剂对向日葵生理特性影响以及合理的施用量。以新食葵7号为材料，将喷施缩节胺、多效唑和矮壮素设置5个不同处理浓度，研究不同浓度的植物生长调节剂下向日葵叶绿素、游离脯氨酸和可溶性蛋白含量、膜脂过氧化以及保护性酶活性的变化规律。不同浓度植物生长调节剂对向日葵的各生理指标影响不同，缩节胺200mg/L、多效唑100mg/L和矮壮素12g/L提高向日葵叶片的叶绿素和可溶性蛋白含量、增加游离氨基酸的积累量、降低丙二醛的产生、增强SOD、POD、CAT保护酶活性，提高植株的生理代谢功能。

Effects of mepiquat chloride,paclobutrazol and chlorocholine chloride on physiological characteristics of sunflower

To modify plant type by plant growth regulator, sunflower physiological characteristics were investigated under different concentrations of mepiquat chloride (DPC), paclobutrazol (PP333) and chlorocholine chloride (CCC). Confectionary sunflower cultivar Xinshikui 7 was used, and protective enzyme activity of chlorophyll, free proline, soluble protein and lipid were investigated. Results showed that DPC (200 mg/L) and PP333 (100 mg/L) and CCC (12 g/L) improved leaf chlorophyll, soluble protein and free amino acids accumulation. Protective enzyme activity increased. Malonaldehyde content decreased.