The insecticidal activity of transgenic sck rice line 86AS1 and cry1Ac/sck rice line MSB to Chilo suppressalis(Walker)and pathologic changes in their mid-gut tissues were investigated in laboratory.

• 室内采用离体叶片法研究了转sck单价基因抗虫水稻86AS1和转cry1Ac/sck双价基因抗虫水稻MSB不同生育期主茎顶叶对二化螟幼虫的杀虫效果.