The abnormal embryo rates in cotyledon petioles and the callus induced from leafstalk increased, and normal embryos transformed into abnormal embryos when cultured on the mediums of low ratio of cytomin/ auxin. 在细胞分裂素/生长素比值低的培养基上培养,子叶柄、叶柄愈伤组织的畸形胚发生率高;正常胚转化成畸形胚。