Preliminary Study on Expression Characteristics of Sorbitol Transporter (SOT)Gene Family and the Role in Sugar Accumulation in Pyrus pyrifolia Fruits Preliminary Study on Expression Characteristics of Sorbitol Transporter (SOT)Gene Family and the Role in Sugar Accumulation in Pyrus pyrifolia Fruits DETERMINATION OF POLLINIZERS FOR MAJOR GROWN CULTIVARS OF CHINESE SOUTHERN PEAR Effects of Tree Shape on the Sugar Accumulation and Activity of Sorbitol-Invertase of Pyrus pyrifolia ‘Sunhwang’ Genetic Diversity of Pyrus pyrifolia Resources in Guizhou Province Using SRAP Markers Variation of Organic Nutrition on Shoot and Flower Bud of ‘Hosui’Pear (Pyrus pyrifolia Nakai) during Reflorescence Period Cloning and Expression of HHT Gene in ‘Huanghua’ Pear and Its Bud Mutant ‘Lühuanghua’ Pear (Pyrus pyrifolia Nakai) Cloning and Expression of a Glutathione-S-transferase Gene from Pyrus pyrifolia Nakai cv.Huobali Identification of Male Sterility of Pear Cultivars in Niitaka Line Identification of Male Sterility of Pear Cultivars in Niitaka Line Identification of S-Genotypes of 13 Progenies of‘Shinseiki’Pear A New Largest-type Variety of Asian Pear ‘Qingxiang’ A New Largest-type Variety of Asian Pear ‘Qingxiang’ Correlation analysis on nutrition status of soil and leaf nutrients for Pyrus pyrifolia cv.Hosui citrus demonstration orchard Cloning of cDNA for ACC Oxidase from Fruit of Pyrus pyrifolia Nakai and Construction of Its Corresponding Antisense Expression Vector Cloning of cDNA for ACC Oxidase from Fruit of Pyrus pyrifolia Nakai and Construction of Its Corresponding Antisense Expression Vector Determination of S Genotypes of Seven Cultivars and Identification of a Novel S RNase Allele in Pyrus pyrifolia A New Pyrus pyrifolia Cultivar‘Huagao’with High Sugar A New Pyrus pyrifolia Cultivar‘Huagao’with High Sugar The Changes of Enzymes Activity during the Flower Bud Differentiation of‘Pingguoli’ The Changes of Enzymes Activity during the Flower Bud Differentiation of‘Pingguoli’ A New Pyrus pyrifolia Cultivar ‘Huafeng’ Cloning and Expresssion Analysis of bZIP Gene from Pyrus pyrifolia ‘Huanghua’ Variation of Endogenous Hormone of Pyrus pyrifolia Nakai in South China during Returning Bloom and Its Relationship with Returning Bloom