All plants overwhelmingly produced PMCs with normal chromosome pairing (20 bivalents) at diakinesis and 20:20 segregations at anaphase I (AI) or anaphase II(AII).

• 减数分裂时期，大部分终变期细胞的染色体组成为20个二价体(20II)，表明所有的染色体能完成正常的同源染色体配对；