【Objective】The present study aims to improve the development of immature embryos and increase the efficiency of immature embryos of Chinese Jujube. 【Method】Three varieties of Chinese jujube( Ziziphus jujuba‘Lengbaiyu',Ziziphusjujuba‘Liuyuexian',Ziziphusjujuba‘Xiangfenyuanzao') in 20 to 40 day sold,known for their relatively less severe embryo abortion,were selected as materials. Based on the observation of the development of the young embryo,the effects of genotypes,the minimum embryonic age appropriate sam...