Figure 3

The principal component analysis of the carbon substrates used by the gut microflora of three generations of Asian corn borer (ACB). 1, 2 and 3 represent the 1st generation of ACBs fed phytase transgenic maize, the parental strain Liyu 35 and the non-GM maize Zhendan 958, respectively; 4, 5, 6 represent the 2nd generation of ACBs fed phytase transgenic maize, Liyu 35 and Zhendan 958, respectively; 7, 8, 9 represent the 3rd generation of ACBs fed phytase transgenic maize, Liyu 35 and Zhengdan 958, respectively.