以酸枣和赞皇大枣为试材,对其花粉母细胞的减数分裂过程进行了系统观察,并将减数分裂的各个时期加以描述和分析。结果表明,酸枣减数分裂符合二倍体的分裂规则;赞皇大枣分裂不规则,终变期出现单价体、二价体和三价体,且减数分裂后期Ⅰ和后期Ⅱ出现落后染色体,最终产生三分体、四分体、五分体、六分体,形成不等孢子。 Taking jujube and Zanhuang jujube as test materials, the meiosis process of pollen mother cells was systematically observed and the stages of meiosis were described and analyzed. The results showed that meiosis of jujube accorded with the rule of diploid splitting. The split of Zanhuang jujube was irregular with monovalent, divalent and trivalent forms in the final stage, and lagging chromosomes in the late stage of meiosis Ⅰ and Ⅱ , Eventually produce three parts, four parts, five parts, six parts, forming spores.