IAAGA1+3and CTK content began to drop rapidly on 7DAA and remained at arelatively low level during the embryonic abortion period.

• 败育胚珠中ABA含量在胚胎败育期保持较高水平，IAA和 GAI＋3则降到最低点，CTK含量亦明显低于正常胚珠。 兰竹