AN EMBRYOLOGICAL STUDY OF SALOMONIA CANTONIENSIS LOUR

Authors


Summary

The flower development, structure and different aspects of embryology of Salomonia cantonien-sis are described. Development of the floral parts occurs in acropetal succession. The wall of the anther is composed of three layers of cells. The tapetum is of secretory type with binucleate cells. The endothecial layer develops fibrous thickenings and with the epidermis forms the mature anther wall. The pollen grains are polycolporate, three-celled at the time of shedding and the majority of them germinate in situ. The ovary is superior and bilocular with a single anatropous bitegmic ovule in each locule. The embryo-sac develops according to the Polygonum type. The flowers are autogamous and the process of pollination is described. The endosperm is free nuclear to begin with but later becomes cellular. The embryo development follows the Asterad type as in other members of Polygalaceae. Most of the endosperm is used up by the growing embryo. The two-layered seed-coat is organized by the outer integument of the ovule. The present observations are discussed with other relevant literature.

Ancillary