Transformation of tobacco plants by Yali PPO-GFP fusion gene and observation of subcellular localization THE EFFECT OF FERTILIZER-N APPLIED At DIFFERENT TIME TO "YALI" PEAR Effect of organic fertilizer and bagging on fruit flavor quality of Yali pear Studies OB the Microfossils from the Hebiancun Formation, Hutuo Group, Wutai Mountain Area, North China Relationship of pear pollen and stigma development with temperature Study on the Stage of Latent Infection and Regularity of Development of the Pear Ring Rot Disease after Postharvest Control of Black Mould Disease in ‘Yali’Pear Fruit by the Treatment withASM Induction after Harvest Cloning and Expression Analysis of PbHCT3 Gene in Pyrus bretschneideri Rehd.cv.‘Yali’ Effects of different soil management methods on the soil nutrients, enzyme activity and fruit quality of pear orchards Cloning of ACC Oxidase Gene from Yali Pear and Tranformation of Its Antisense Expression Vector with Agrobacteriummediated Method Control of Black Mould Disease in ‘Yali’Pear Fruit by the Treatment withASM Induction after Harvest