在建立以银腺杨(84K)叶片为外植体的再生系统基础上,通过农杆菌介导法把Cry I Ac和API双价抗虫基因导入银腺杨(84K)基因组中。转化杨树叶片,在含有卡那霉素的培养基上诱导不定芽和诱导生根,获得了400株卡那霉素抗性转化再生植株。抗性植株经PCR检测,有70株呈阳性。通过Southern杂交和EL ISA检测进一步证明Cry I Ac和API双价抗虫基因已整合到银腺杨(84K)基因组中,拷贝数1～2个,并得到了表达。转化植株用杨扇舟蛾幼虫进行饲虫试验,结果表明昆虫幼虫的死亡率高达60. 0%～80. 0%。同时,存活幼虫的生长发育也受到了明显抑制。本研究结果为杨树抗虫育种提供了新的种质资源。
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