DEVELOPMENT OF POLLEN AND OVULE IN PTEROCARPUS MACROCARPUS KURZ.,

บทคัดย่อ

Pterocarpus macrocarpus Kurz, has a perfect flower which is borne upon the peduncle. During the early stage of flower development, the anther consisted of anther wall and sporogenous cells. Later stage, the middle layers regenerated but the sporgenous cells still underwent cell division and formed pollen. As the later stage of flowering, the ovule contained one embryo sac covered with 2 integuments, outer and inner integuments. Each embryo sac consisted of three antipodal cells, two endosperm mother cells and egg apparatus. The development of pollen and ovule completed within one month.