【摘要】 以3种香草植物柠檬香茅(Cymbopogon citratus)、香蜂草(Melissa officinalis)和匍匐迷迭香(Rosmarinus officinalis ’Severn Sea’)的1年生扦插苗为材料,在智能人工气候箱中模拟35℃高温条件对材料进行高温处理,对叶片的叶绿素、相对电导率、SOD、MDA、可溶性糖和可溶性蛋白含量进行测定分析。研究结果显示:柠檬香茅的叶绿素a、叶绿素b、叶绿素总含量和类胡萝卜素含量均呈下降趋势,香蜂草则呈上升趋势,而匍匐迷迭香呈先增后减趋势;柠檬香茅和香蜂草的相对电导率、MDA含量、可溶性糖和可溶性蛋白含量均显著增加,SOD活性显著降低;匍匐迷迭香的相对电导率、MDA含量和SOD活性上下变化幅度较小。结果表明柠檬香茅比香蜂草和匍匐迷迭香对高温更为敏感。更多还原

【Abstract】 Using one-year-old cutting seedlings of three aromatic plants(Cymbopogon citratus,Melissa officinalis,Rosmarinus officinalis ’Severn Sea’)as experimental materials,contents of chlorophyll, the relative electrical conductivity, activities of superoxide dismutase(SOD),malondialdehyde(MDA),soluble sugar and soluble protein in leaves were measured and analyzed under 35 ℃ simulated by intelligent artificial climate box. The results showed that the chlorophyll a,chlorophyll b,total chlorophyll content and carotenoid content of C. citratus showed a downward trend,while that of M. officinalis increased,and that of ’ Severn Sea’ increased first and then decreased. The relative conductivity,MDA content,soluble sugar and soluble protein content of C. citratus and M. officinalis were significantly increased,and SOD activity was significantly decreased. The relative electrical conductivity,MDA content and SOD activity of ’Severn Sea’ changed little. To sum up,C. citratus is more sensitive to high temperature than M. officinalis and ’Severn Sea’.更多还原