EMBRYOLOGY OF PARACALYX (FABACEAE)

Abstract

Embrylogy of Paracalyx scariosus (Roxb.) Ali has been investigated. Anthers are tetrasporangiate and anther wall comprises of epidermis, endothecium, one middle layer and glandular tapetum. Cytokinesis is of the simultaneous type and pollen tetrads are tetrahedral, decussate and isobilateral. Pollen grains are shed at two-celled stage. Along with normal microspores abnormal spores with variable number of supernumerary nuclei have been met with. The ovule is compylotropous, bitegmic and crassinucellate. Megaspore tetrad is linear and embryo sac development is of the Polygonum type. Endosperm development follows Nuclear type. Embryo development follows Onagrad type.