Ascorbate Contents and Activities of Some Antioxidant Enzymes during Senescence of Rosa roxburghii Leaves A Comparative Study of RAPD and Morphological Approaches to CharacterizeRelationships of Rosaroxburghii Tratt.and Its Relatives Studies on the Occurence, Development and Control of Rosa roxburghii Powdery Mildew Effects of Exogenous Divalent Cations Ca2+ and Cu2+ on Expression of Genes Involved in Ascorbate Metabolism in Rosa roxburghii Fruits Analysis on SSR Information in Transcriptome and Development of Molecular Markers in Rosa roxburghii Ascorbate Contents and Activities of Some Antioxidant Enzymes during Senescence of Rosa roxburghii Leaves A Preliminary Study on Inher itance Tendency of the Resistance to PowderyMildew Using F1 Progen ies of Chestnut Rose ( Rosa roxburghii Tratt) A Comparative Study of RAPD and Morphological Approaches to CharacterizeRelationships of Rosaroxburghii Tratt.and Its Relatives Development of the Embryo and Endosperm in Roxburgh Rose A Preliminary Study on Inher itance Tendency of the Resistance to PowderyMildew Using F1 Progen ies of Chestnut Rose ( Rosa roxburghii Tratt) Chemical constituents from medical and edible plants of Rosa roxburghii A New Rosa roxburghii Cultivar‘Guinong 5’ Expression of GDP-L-galactose Pyrophosphatase and Its Relationship with Ascorbate Accumulation in Rosa roxburghii Expression of GDP-L-galactose Pyrophosphatase and Its Relationship with Ascorbate Accumulation in Rosa roxburghii Co-changes of Antioxidant Enzymes and Ascorbic Acids During the Fruit and Leaf Development of Rosa roxburghii Co-changes of Antioxidant Enzymes and Ascorbic Acids During the Fruit and Leaf Development of Rosa roxburghii A New Rosa roxburghii Cultivar‘Guinong 5’ Response of Main Antioxidant Compositions to Mechanical Wounding and UV-B Stress in Rosa roxburghii Fruit Response of Main Antioxidant Compositions to Mechanical Wounding and UV-B Stress in Rosa roxburghii Fruit Anticancer effect of CL extract of Rosa roxburghii