Antipodal cells the three haploid cells found in the embryo sac of seed - bearing plants that migrate to the chalaxal end of the sac farthest from the micropyle 反足细胞：胚囊三次分裂形成卵细胞，助细胞和极核等，其中位于合点端的三个单倍体细胞称反足细胞。
2.
( 2 ) there are few ideal techniques for mearsuring [ ca2 + ] cyt . in conclusion , both limitation delay studies of [ ca2 + ] cyt in embryo sac during fertilization . the thesis work is to investigate the connection of [ ca2 + ] cyt and fertilization by avoiding drawbacks noted above , say , employing an ideal experimental plant , torenia fournieri , with a naked embryo sac that protrudes from the micropyle 针对这种现状，本工作选用具有裸露胚囊的玄参科的蓝猪耳植物为研究材料，研究ca ~ ( 2 + )与受精过程中相关的细胞学事件的关系，探索[ ca ~ ( 2 + ) ] _ ( cyt )在被子植物双受精过程中的作用。
