Department of Botany, Visveswarapura College of Science, K.R. Road, Bangalore-560 004, Karnataka, India
*Email: m.r.gurudeva@gmail.com
Online published on 25 April, 2016.
The development of embryo sac of Zeuxine gracilis (Breda) Bl. was studied. The ovule is anatropous, bitegmic and tenuinucellate. The inner integument alone forms the micropyle. The mode of embryo sac development conforms to bisporic and G3 ’, type of Abe (1972b). The mature embryo sac contains an egg apparatus, two polar nuclei, and one antipodal nuclei. Double fertilization occurs normally.
Angiosperms, bisporic, embryology, embryo sac, Orchidaceae
