Factors Influencing Pollen Germination and Tube Growth of Prunus armeniaca L.in vitro Comprision of drought resistance and pistil development of three sorts apricot varieties A Study on External Factors for Control of Leaf Water Potential of Apricots Effects of Processing on Special Toxicity and Pharmacodynamics of Semen Armeniacae Amarum Palynological Study on the Origin and Systematic Evolution of Kernel-using Apricots Palynological Study on the Origin and Systematic Evolution of Kernel-using Apricots Studies on the Processing of Semen Armeniaca Studies on the Microwave Processing Method of Semen Armeniacae Amarum Interspecific Hybridization of Prunus persica with P. armeniaca and P.salicina Using Embryo Rescue