Transgenes should be with single copy and without accessory sequence, and with consistence to express and stable genetic in various transgenic plants in a new gene transformation program.

• 新的转化程序要求把基因导入农艺性状优良的品种中，呈单拷贝、不带有辅助序列，并在不同的转化体中表达一致，稳定遗传。