Biological Approaches for improving Alkaline-Saline Grassland Research on the Restoring Succession of the Degenerated Grassland in Inner Mongolia I. Basic Characteristics and Driving Force for Restoration of the Degenerated Grassland Development of the Expert Systems for Management of Maowusu Sandy Grassland Principles and Ecologically Optimal Model for Desert Grassland Management Distribution of Soil Microorganism in the Soil of L. chinensis Grass-lands in Northeastern China Plain and Their Relations with Soil Factors Principles and Optimal Models for Development of Maowusu Sandy Crassland The Characteristics of Biomass and Conversion Efficiency of Solar Radiation for Principal Types of Alpine Grasslands in Tianzhu, Gansu Province, China Phosphorus Budgets and Cycling in Leymunes chineses Grassland Preliminary Study on Biomass of Artemisia ordosica Community in Ordos Plateau Sandland of China Studies on the Characteristics of Mn, Cu and Zn Contents in the Aneurolepidium chinense Grassland of Northeast China A Study on Ca, Mg Content in Aneurolepidium chinense Grassland in Northeast China Studies upon Grassland Vegetation on Coastal Sandy Soil at Wenchang County, Hainan Island Research of Biomass and Net Primary Productivity of Filifolium sibiricum Grassland in Eastern Neimengou The Statistical Analysis Between Winter Steppe Grass Yield in Tiansan North Slope and Meteorologic Conditions The Growth Rhythm of the Grasses Populations and their Adaptability of Environment in Kobresia humilis Meadow Succession of the artificial grasslands in the mountain grassland area of gannan district gansu A Study on the Productivity of Secondary Shrub Thicket and Shrub-Grassland in Yixian County,Anhui Province A Correlative Analysis Between Spectral Reflectance and Yield of Grassland on Xilingol,Inner Mongilia A Study on Numerical Classification and Ordination of Tropical Grassland in Hainan Island A Classification of the Wild Grass Communities on Mount Tai A Study of the Grassland in Hainan Island Ultrastructural Observation on Chloroplast of the Thermo sensitive Green yellow Banded Leaf Mutant in Rice (Oryza sativa ssp.indica) Petroleum Sporo-pollen Assemblages and Petroleum Source Rocks of North Tarim Upheaval in Xinjiang Study of Gliadin and High Molecular Weight Glutenin in Octoploid Wheat-Wheatgrass and Its Wheat Parents Partitioning the Spatial and Environmental Variations of Plant Community Structure of Alkaline Grassland on Songnen Plain Ultrastructural Study on the Degenerative Processes of Procambial Cells in Maize Leaf Blades X- ray Energy Spectra Analysis of Lanthanum in Tissue Cells of Defferent Parts of Wheat Plant Isozyme Analysis of F 5 and BC 1F 4 from Cultivated Barley (Hordeum vulgare)× Roegneria ciliaris Study on the Fossil Woods Found in Zigong, Sichuan, China Ultrastructures of the Egg Apparatus and the Central Cell of Calystegia hederacea (Convolvulaceae) Before and After Fertilizati on Characterization of a Wheat- wheatgrass Translocation Line by FISH Studies on the Relationships Between Moricandia and Brassica Species Ultrastructure of the Vegetative Cells of Nostoc flagelliforme Prepared with High Pressure Freezing and Freeze Substitution Technique Ultrastructural Study on the Interactions Between Three Respectively Different Disease- resistant Cucumber Cultivars and Phytophthora melonis RAPD Analysis of Sixteen Varieties of Mustard Studies on Microdissection and Microcloning of the Rye Chromosome 1R A Model of Precipitation Redistribution Within a Three-Leveled Sandy Grassland Landscape Access and Identification of Intergeneric Hybrid Between Brassica juncea×Crambe abyssinica Ultrastructural Changes in the Mesocarp Cells of Grape Berry During Its Development Brassica De-Exined Pollen as a New Experimental System for Studying Pollen Germination Ultrastructural Study on the Ontogeny of Minor Veins and Associated Sheath Tissues in the Maize Leaf Blades The Cytoultrastructure of Nostoc flagelliforme Under Cultured Condition Changes of Freeze-Fracture Ultrastructure and 27 kD Polypeptide of Photosynthetic Membranes During the Germination of Lotus Seeds Under Light Palynological Evidence for Jurassic Petroleum Source of Qaidam Basin Studies on Ribonucleoprotein and Argyrophilic Proteins in the Chromosomes of Prorocentrum sp. A Modeling Study on Responses of Alkaline Grassland Ecosystems to Climate Change in Light of Diversity and Spatial Patterns Changes of Plastids Mitochondria and Their DNA in the Egg Cell Before and After Fertilization in Pharbitis Ultrastructural and DNA Epifluorescence Observations of the Sperm Cells of Rhododendron-- with Emphasis on Biparental Plastid Inheritance Induction of Male Sterility in Oilseed Rape by TA29-Barnase Gene Plasmalemma Invaginations in Cultured Callus of Stevia rebaudiana: Ultrastructure and Ultracytochemical Localization of Acid Phosphatase Spores and Pollen from Crude Oil of Kashi Depression, Xinjiang Ultrastructural Localization of Acid Phosphatase Activity in Soybean Cotyledon Cells Isolation and Artificial Germination of De-exined Pollen in Brassica A Preliminary Study on the Use of RFLP Analysis of the PCR Amplified Products in the ystematic Investigation of the Subtribe Astragalinae (Fabaceae) Ultrastructure of Transfer Cells in Endosperm of Coix lacryma-jobi Cloning and Sequence Analysis of a Specific Mitochondrial DNA Fragment Related to Wild Abortive Type Cytoplasmic Male Sterility in Rice The Secretory Stigmas in Populus: Development, Cytochemistry, Ultrastructure and Their Relation to Intersectional Incompatibility Enhancement of Plant Regeneration Rate of Brassica parachinensis Cultured in Vitro Protoplast Culture and Plantlet Regeneration from Hypocotyls of Brassica campestris var. parachinesis Behavior Study of NAD-Malic Enzyme in Facultative CAM Plants Ultrastructural Studies of Somatic Embryogenesis in Wheat Cytological Studies on F1 Hybrids Between Hexaploid Aegilops and Triticum aestivum Structure of Micropyle in Gossypium hirsutum and the Pathway of Pollen Tube Growth Ultrastructural Study in Leaf Cell of Brassica oleracea var. capitata Under Heat Stress Construction of Plant Expression Vectors and Identification of Transgenic Potato Plants Cloning of Tomato Polygalacturonase cDNA and Transforming Plants with Antisense RNA A Study on Esterase Isozymes of Some Species of Fritillaria Effects of Light Intensity on Microstructure and Ultrastructure of Panax ginseng Leaves Under Field Condition Studies on the Pollen Morphology of the Genus Ulmus L. in China and Its Taxonomic Significance Chromosomal Locations of Wheatgrass Esterase Isozyme Genes in Set I Wheat-Wheatgrass Alien Additional Lines Plant Regeneration from Protoplasts of Savoy Cabbage(Brassica oleracea L. var. subauda) The cDNA Cloning and Nucleotide Sequence of the Gene Encoding Nonstrucure Protein of Rice Dwarf Virus Genome Segment 10 Cloning and Sequencing of the Gene Encoding 10 kD Zein of Maize Ultrastructural Observation on Microtubules of the Generative Cell in Amaryllis Germinated Pollens and Pollen Tubes Effects of Different Light Qualities on Structure of Chloroplasts and Photosynthetic Physiological Properties in Panax ginseng Light Energy Transfer Between Phycobiliproteins and Thylakoids of Higher Plants Stability Expression of Herbicide Resistant Gene and Luciferase Gene in Calli Derived from Wheat Protoplasts Effects of Crosslinking Agent-DFDNB on Energy-transducing Reactions of Chloroplast Thylakoid Membrane Proteins Effects of Stimulation with Weak Electric Currents on in Vitro Culture of Cabbage A Study on the Development and Uhrastructure of Axillary Squamules of Sagittaria sagittfolia