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为探讨遗传工程水稻再转化的可能性，对其离体子房进行了培养，从子房诱导出愈伤组织并分化成苗．观察结果表明，培养基合 ５ 比 Ｎ６ 更适宜于遗传工程水稻子房的培养，在合５ 和 Ｎ６ 条件下，遗传工程水稻各品系间的诱导率和分化率存在差异，且均优于受体湘早籼８ 号，培养基合５ 条件下各品系诱导率和分化率大小依次为 Ｇ Ｅ Ｒ４， Ｇ Ｅ Ｒ３， Ｇ Ｅ Ｒ１，湘早籼８ 号；低温（４～５℃）预处理 ４８ ｈ 或喷６ Ｂ Ａ ７２ ｈ 后均能促进雌核愈伤化，低温预处理的效果优于６ Ｂ Ａ 的影响．
In order to explore the possibility of re-transformation of genetically engineered rice, its ovary was cultured, callus was induced from the ovary and differentiated into seedlings. The results showed that medium 5 and N6 were more suitable for the cultivation of genetic engineering rice ovary. Under the conditions of 5 and N6, the induction rate and differentiation rate of the genetically engineered rice lines were all different The induction rate and differentiation rate of each line under Xiangzaoxian 8 and medium 5 were G E R4, G E R3, G E R1 and Xiangzaoxian 8 at low temperature (4 ~ 5 ℃) pretreatment 48 h or spray 6 B A 72 h can promote the gynogenesis callus, hypothermia pretreatment effect is better than the impact of 6 B A.