Effect of HKL-4 on active oxygen metabolism and photochemical efficiency in licorice leaf / 中国中药杂志

<p><b>OBJECTIVE</b>To study the effects of HKL-4 on physiological changes during growth of leaves.</p><p><b>METHOD</b>Using licorice (Glycyrrhiza uralensis) as material, the effects of HKL-4 on active oxygen metabolism and photochemical efficiency in licorice leaf were determined under field condition.</p><p><b>RESULT AND CONCLUSION</b>The contents of chlorophyll, activity of SOD and CAT increased, while the MDA contents in leaves decreased. The senescence was delayed, so that the photochemical efficiency (Fv/Fm) was increasing comparing to the control.</p>