Effect of endophyte infection on the concentrations of free proline and ABA of leaves of Lolium perenne L. under water stress Photosynthetic pigments and photosynthetic products of endophyte-infection and endophyte-free Lolium perenne L. under drought stress conditions Effects of Arbuscular Mycorrhizal Fungi (Glomus mosseae) on Growth and Photosynthesis Characteristics of Lolium perenne L. under Cd Contaminated Soil Analyses of DNA Methylation and Gene Expression of Lolium perenne during Seed Germination under NaCl Stress Effect of Nitric Oxide on Proline Accumulation in Ryegrass Seedlings Subjected to Salt Stress Characteristic substances and photosynthetic characteristics of Lolium perenne L. with waste crumb rubber filled in turf medium under trample stress Effects on initial growth of Lolium perenne under heavy metal progressive stress EFFECT OF SALT STRESS ON SEED GERMINATION OF LOLIUM PERENNE L. AND FESTUCA ELATA KENG. Effects of endophyte infection on POD, SOD and PPO isozymes in perennial ryegrass (Lolium perenne L.) under different water conditions Growth characteristics of endophyte-infected and endophyte-free Lolium perenne L. seedlings under osmotic stress conditions Effects of Paclobutrazol on Thermotolerance of Perennial Ryegrass A Study on Allelopathic Effect of Stellera chamaejasme L. on Melilotus suaveolens Ledeb and Lolium perenne L. Effects of loess soil stabilization on Lolium perenne L. growth and root activity. Effects of endophyte infection on ecophysiological response of perennial ryegrass under phosphorus deficiency Effects of Endophyte Infection on Seed Germination, Seedling Growth and Osmotic Stress Resistance of Perennial Ryegrass (Lolium perenne L.) Effects of Endophyte Infection on the Growth of Lolium perenne L.Under drought Stress Effects of Exogenous Nitric Oxide on the Growth and Physiological Characteristics of Perennial Ryegrass Seedlings under Osmotic Stress Highly Efficient regeneration System for Multiple Shoots in Perennial Ryegrass Effects of PEG Stress on the Drought Resistance of Six Turfgrass Varieties of Lolium perenne L. Effects of Paclobutrazol on Thermotolerance of Perennial Ryegrass Changes in SOD and POD activity and free proline content of Lolium perenne and Festuca elata leaves under different levels of salt stress