TY -JOUR
AU -G.N.V. Febulaus
AU -T. Pullaiah
TI -Embryology of Chloris roxburghiana Schult. (Poaceae)
PY -1991
DA -0000-00-00
JO -Taiwania
VL -36
IS -4
SP -303
EP -310
UR -https://taiwania.ntu.edu.tw/abstract/165
AB - Anthers are tetrasporangiate. Anther wall develops in a monocotyledonous manner, leading to the formation of three layers below the epidermis. Anther tapetum is of Glandular type and its cells become two-nucleate. Microspore mother cells are arranged in two rows and normal meiosis leads to the formation of isobilateral microspore tetrads. Cytokinesis is of the successive type. Pollen grain is 1-porate and 3-celled at the time of shedding. Some abnormal pollen grains with three to four sperms have been observed. The ovary contains a single bitegmic, hemianatropous and tenuinucellate ovule. Meiosis in megaspore mother cell leads to the formation of T- shaped tetrad of megaspores. The chalazal megaspore is functional and embryo sac development follows monosporic Polygonum type. Embryo sac after fertilization shows prominent caecum towards the chalazal end. Antipodal cells get displaced to this lateral caecum. Endosperm development is of the nuclear type and embryogeny follows Asterad type.
DO -10.6165/tai.1991.36.303