Biological performance of Bollgard II® Bt-resistant vs susceptible population of pink bollworm, Pectinophora gossypiella (Saunders) on non-toxic diet

Table 1 Probit response of susceptible and resistant populations to Bollgard II^® Bt cotton expressing Cry1Ac + Cry2Ab toxics

Population	LC₅₀ (95% FL)	LC₉₀ (95% FL)	Slope ± SE	χ²	h	RR
Lab-S	0.011 (0.002–0.023)	0.105 (0.051–0.672)	1.317 ± 0.393	0.829	0.414	1.00
Field-R	0.931 (0.423–2.623)	4.843 (1.937–86.386)	1.790 ± 0.247	5.334	1.781	84.64

Lab-S laboratory-established Cry toxin-susceptible population, Field-R field-collected Cry toxin-resistant population; LC₅₀ (95% FL) represents median lethal concentration in g·kg^–1 (95% fiducial limits), LC₉₀ (95% FL) represents concentration of toxin in g·kg^–1 that kills 90% of the tested larvae (95% fiducial limits); SE standard error, RR resistance ratio, h heterogeneity

ISSN: 2523-3254