DNA dot blot analysis showed that 73. 4% of resistant plants contained GNA and hpt genes. Southern blot analysis confirmed the integration of GNA gene in the genome of transgenic rice.

• DNA点杂交检测表明73.；4%25的抗性植株同时含有GNA基因和hpt基因；Southern杂交分析进一步证实了GNA基因在转基因水稻基因组中的整合