THE DEVELOPMENT OF EMBRYO AND ENDOSPERM IN Lonicera maackii(RUPR.)MAXIM

The development of embryo and endosperm of Lonicera maackii(Rupr.) Maxim was observed by means of traditional paraffin wax sections.The following results were obtained: The development of embryo was of onagrad type.The fertilized egg usually underwent a long period on rest before embarking on its first division in middle and late July and the first division of zygote was transverse.The apical cell had a vertical division and the development of embryo underwent the following stages,such as the globular embryo,the heart-shaped embryo,the torpedo-shaped embryo and the mature embryo.The basal cell formed the suspensor with a transverse division.The suspensor developed slowly and degenerated at the heart-shaped embryo stage.The first division of the zygote took place after the division of primary endosperm nucleus.The development of endosperm was of nuclear type.The endosperm cellularized at 8-celled proembryo stage and the endosperm cells reserved abundant lipid bodies at the mature embryo stage.