Table 4.
Multiple regression analysis of cry genes on insecticidal activity of B. thuringiensis strains. df, degree of freedom; Sig. F change, significance for the change in R-square for F-test.
| Variables | Parameters | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 24 h | 48 h | 72 h | |||||||
| Standardized coefficient | t | p | Standardized coefficient | t | p | Standardized coefficient | t | p | |
| cry1B | 0.048 | 0.324 | 0.749 | 0.107 | 0.773 | 0.447 | 0.117 | 0.822 | 0.419 |
| cry2Aa1 | 0.770 | 4.369 | 0.000 | 0.786 | 4.794 | 0.000 | 0.770 | 4.551 | 0.000 |
| cry7 | −0.008 | −0.054 | 0.957 | −0.019 | −0.138 | 0.891 | −0.031 | −0.211 | 0.835 |
| cry9Ea | 0.442 | 2.822 | 0.010 | 0.459 | 3.154 | 0.004 | 0.434 | 2.888 | 0.008 |
| cry22 | 0.002 | 0.016 | 0.988 | 0.019 | 0.143 | 0.888 | 0.058 | 0.414 | 0.683 |
| R square | 0.559 | 0.619 | 0.594 | ||||||
| df1 | 5 | 5 | 5 | ||||||
| df2 | 23 | 23 | 23 | ||||||
| Sig. F Change | 0.001 | 0.000 | 0.001 | ||||||