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为探讨多效唑对大丽花生理特性的影响,以高生品种‘陇上雄鹰’盆栽扦插苗为试验材料,株高30cm时,用不同浓度的多效唑对大丽花进行一次喷施处理,研究了大丽花叶片内生理生化指标的变化。在多效唑处理条件下,‘陇上雄鹰’叶片内叶绿素、可溶性糖、可溶性蛋白和脯氨酸含量较对照均显著增加,SOD、POD和CAT活性也明显提高,丙二醛含量减少;且随着施用浓度的增加,作用效果增强。其中以125mg/L多效唑处理效果最显著,叶绿素、可溶性糖、可溶性蛋白和脯氨酸含量分别较对照增加0.75mg/g、17.90mg/g、22.13μg/g和29.92μg/g;SOD、POD和CAT活性较对照提高1.97倍、1.75倍和1.80倍,丙二醛含量减少30.70%。说明喷施多效唑可显著影响大丽花生理特性,提高可溶性固形物含量及抗氧化物酶活性,促进发育,增强抗逆性。
In order to explore the effect of paclobutrazol on the physiological characteristics of dahlia, Dahonghua Erythrina (Phyllostachys praeparata) cuttings were used as test material. When the plant height was 30cm, Dahlias were sprayed once with different concentrations of paclobutrazol. Biochemical changes. Under paclobutrazol treatment, the content of chlorophyll, soluble sugar, soluble protein and proline in leaves of ’Longshangyoyojian’ significantly increased compared with the control, and the activity of SOD, POD and CAT also increased obviously and the content of malondialdehyde decreased The application of the concentration increases, the effect is enhanced. Among them, the treatment with 125 mg / L paclobutrazol was the most significant, and the content of chlorophyll, soluble sugar, soluble protein and proline increased by 0.75mg / g, 17.90mg / g, 22.13μg / g and 29.92μg / g respectively compared with the control; And CAT activity increased 1.97 times, 1.75 times and 1.80 times than the control, malondialdehyde content decreased 30.70%. The results showed that spraying paclobutrazol can significantly affect the physiological characteristics of dahliae, increase soluble solids content and antioxidant enzyme activity, promote development and enhance resistance.