论文部分内容阅读
研究盐胁迫对旋覆花(Inula japonica)幼苗生长和生理指标的影响,为以后旋覆花的推广和应用提供理论依据,并为盐碱地区城市的景观建设和生态绿化提供更为优质的植物种类。以旋覆花幼苗作为试验材料,分别用浓度为0.2%、0.4%、0.6%、0.8%、1.0%的Na Cl、Na2SO4对旋覆花的幼苗进行胁迫处理,结果显示:盐处理使旋覆花叶片中蛋白质含量、光合色素含量显著降低,可溶性糖、脯氨酸含量显著升高;较高盐浓度处理POD活性升高,SOD活性降低;盐胁迫下丙二醛含量变化不显著。旋覆花对Na Cl、Na2SO4抗盐阈值分别为0.75%和1.08%,存活阈值分别为0.85%和2.33%。
To study the effects of salt stress on the growth and physiological indices of Inula japonica seedlings and to provide a theoretical basis for the popularization and application of Inula japonica seedlings and to provide better plant species for urban landscape construction and ecological greening in saline-alkali regions . Seedlings of Inula japonica were used as experimental materials to inoculate the seedlings of Inula brasiliensis with NaCl, Na2SO4 at 0.2%, 0.4%, 0.6%, 0.8% and 1.0% respectively. The results showed that: The content of protein and photosynthetic pigment in flower leaves decreased significantly and the content of soluble sugar and proline increased significantly. The activity of POD increased and the activity of SOD decreased when salt concentration increased. The content of malondialdehyde did not change significantly under salt stress. The inulin resistance threshold values for NaCl and Na2SO4 were 0.75% and 1.08%, and the survival thresholds were 0.85% and 2.33%, respectively.