Fig. 9
Insect resistance of BC4F8 and BC4F9 transgenic plants in the laboratory. Larval mortality of C. suppressalis in laboratory bioassays in 2020 (a) and 2021 (c). All tests were conducted with ten replicates, and one replicate comprised 20 s instar larvae. Values are mean ± standard error. Data followed by different lowercase letters denote significant differences between the mortality (%) rates of C. suppressalis at the 5% level according to least significant difference tests. Laboratory insect feeding tests of the stems of CHT025T(1C), CHT025T(2A), CH891T(1C), CH891T(1C), CH871T(1C), and CH121T(1C) at the heading stage in 2020 (b) and 2021 (d)