TY -JOUR
AU -H. N. Krishna Kumar and S. N. Ramaswamy
TI -Contributions to the Study of Microsporogenesis in Calamus L. (Arecaceae)
PY -2003
DA -0000-00-00
JO -Taiwania
VL -48
IS -3
SP -180
EP -193
UR -https://taiwania.ntu.edu.tw/abstract/29
AB -The genus Calamus in the Arecaceae has so far remained embryologically unknown. The present work on the development of the microsporangium and male gametophyte in 5 species of Calamus (Arecaceae) is the first investigation. The tapetum is of secretory type and its cells become binucleate. The pollen mother cells undergo successive divisions to produce isobilateral and tetrahedral tetrads. The mature pollen grains in C. nagbettai, C. stoloniferus and C. travancoricus are 2-celled at the time of shedding. In C. gamblei and C. rotang they are, however, 3-celled when shed.
DO -10.6165/tai.2003.48(3).180