To deal with the key obstacles in hybridization , castration difficulties and embryo abortion, Chinese jujube (Ziziphus jujuba Mill.)was mainly studied on cytological, physiological and biochemical mechanism of male sterility and embryo abortion on the bases of identifying natural fertility of many cultivars pollen and embryo, including Chinese jujuba cv Dongzao and Linyilizao. In addition, plantlets were regenerated from embryo of Chinese jujuba cv male sterility No 1 (MSN1) , which belonged to low embryo ...