Effects of Microlepia strigosa under Drought Stress on Physiological Change Laws

Research on Microlepia strigosa under natural drought stress treatment exhibited changes in physical properties.Stress increased relative conductivity,POD activity,soluble sugar and proline content.Soluble protein and MDA content high-low-high;SOD activity,chlorophyll content,total respiratory rate,net photosynthetic rate Intercellular CO₂ concentration and stomatal conductance is on the decline;The CAT activity and Transpiration rate is raise-lower.The membrane system did not exhibit serious damage.The osmotic regulation system had good resistance to dehydration.The protective enzyme system played a role against free radicals;respiration and photosynthesis decreased significantly,but mainly for autonomic regulation of the plant.Results demonstrated that M.strigosa adapted to stress,and showed a strong ability of recovery after drought and exhibited certain endurance ability.