Protoplasts Culture and Fusion from Callus of Poa pratensis L. PROTEOMIC ANALYSIS OF A WINNKLE-LEAF MUTANT IN Poa pratensis L.INDUCED BY AEROSPACE ENVIRONMENT MUTAGENTIC EFFECTS OF AEROSPACE ON Poa pratensis L.Ⅱ——PHOTOSYNTHESIS CHARACTERS AND CHLOROPHYLL CONTENTS Taming breeding of Rhizom-type Forage Variety Poa pratensis L. var. Gaud. cv. Qinghai in Alpine Area The Effect of the Space Condition on the Anatomical Characters of the Leaves and the Ioszyme of Peroxidase and Esterase in Poa pratensis Study on dynamics of aboveground biomass of Poa pratensis var. anceps Gaud. cv. Qinghai Variation in seed yield components among varieties of Poa pratensis Analysis of heat tolerance in Poa pratensis produced by heat stress Nutrition effects on growth and endogenous hormones in kentucky bluegrass Protoplast Culture and Plant Regeneration of Midnight Ⅱ(Poa Pratensis L.) Impact of Biologically Active Substances of Biosolids on Poa pratensis L. Growth under Drought Stress Influence of Applying Slow Release Nitrogen Fertilizers in Autumn on Cold Resistant Turf-type Bluegrass(Poa pratensis L.) Variation of Root System of Poa pratensis var.anceps Gaud.cv.Qinghai during Pasture Establishment Study on Plant Regeneration from Midnight Ⅱ Comparison of Effects of Four Plant Growth Retardants on Growth Characteristics of Poa pratensis Studies on the Salinity Tolerance in Seedling Stage Varietal Differences of Among Five Cultivaors of Truf Poa pratensis A Study on the Technique of Plant Regeneration from Mature Seed Embryo of Kentucky bluegrass in vitro Resistance Against Brown Patch of Different Poa pratensis Cultivar Leaf Epidermis Ultra-Microstructure Associated with Drought Resistance In Poa Pratensis Cultivars Effect on turf characteristics of the Kentucky bluegrass turf under different shading intensities Germplasm Resources of Genus Poa L.in Beijing Area RESEARCH ON APOMIXIS IN KENTUCKY BLUEGRASS Agrobacterium-mediated Transformation of Kentucky Bluegrass Culture and plant regeneration of protoplasts from embryogenic calli of Nuglade (Poa pratensis) Turf Quality Evaluations of Different Wild Poa pratensis Populations in Shanxi Province Effects of Different Fertilizations on the Soil Respiration of Poa pratensis ‘Qinghai’ Grassland Effect of Vegetation Concrete on the Leaf Epidermis Cell of Two Varieties of Poa pratensis L. Effects of NaCl and Drought Stress on Quality and Chlorophyll Fluorescence Parameters of Kentucky Bluegrass Effect of Soil Moisture Content on the Evapo-transpiration(ET)and Growth of Turfgrass Influence of Potassium on Heat Resistance of Kentucky Bluegrass Effects of drought stress and rewatering on the growth and physiological characteristics of Shanxi wild Poa pratensis seedlings Study on the Effect of Three Species of Bacteria Fertilizer on Cold Resistance of Turfgrass Growth Responses of Poa pratensis to the Stress of Four Heavy Metals