The chalazal cell in the dyad contains many organelles, and mitochondria and plastids showing regular shapes, considered a sign of the end of redifferentiation.
合点端的二分体细胞中细胞器丰富，线粒体和质体的形态正常，表明完成了再分化。
The free cell wall formation occurs first in the micropylar end when the embryo is 4-6 celled stage, then to the chalazal end and the center.
当胚发育到4—6个细胞时，在胚囊珠孔瑞的游离核之间先形成细胞壁。细胞壁的形成是以自由壁的方式从珠孔端到合点端自外向内进行。
Its wall has discontinuous sites at the chalazal end and side wall sharing with the egg cell and the central cell.
助细胞合点端及侧方与卵细胞、中央细胞的共同壁不连续。
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