▲染色体行为异常，不联会、配对异常，最终进行异常的 减数分裂，形成大小不等的小孢子、三分孢子和多分孢 子或形成双核多核小孢子 Mcrosporocytes are abnormal in chromosome pairing and undergoes abnormal meiosis.The microspores sare different insize. Tri- microspores and multi-microspores 豌豆(pea)、玉米(maize)、水稻(rice) 32 32 ▲染色体行为异常，不联会、配对异常，最终进行异常的 减数分裂，形成大小不等的小孢子、三分孢子和多分孢 子或形成双核多核小孢子 Mcrosporocytes are abnormal in chromosome pairing and undergoes abnormal meiosis. The microspores are different insize. Tri￾microspores and multi-microspores ： 豌豆(pea)、玉米(maize)、水稻(rice)