WebStatus of Cry1Ac and Cry2Ab2 resistance in field populations of Helicoverpa zea in Texas, USA Helicoverpa zea is a major target pest of Bt corn and Bt cotton. Field-evolved resistance of H. zea to Cry1 and Cry2 proteins has been widely reported in … WebCry1A.105 Cry2Ab2 CEW ECB FAW SB SWCB --- RR2 a 5% structured ½ mile b 5% RIB a Genuity VT Triple PRO b or ‘RIB complete’ Cry1A.105 Cry2Ab2 Cry3Bb1 CEW ECB FAW SB SWCB RW RR2 a 20% structured w/in, adj b 10% RIB a Genuity SmartStax b or ‘RIB Complete’ Cry1A.105 Cry2Ab2 Cry1F Cry3Bb1 Cry34/35Ab1 BCW CEW ECB FAW SB …
Survival and effective dominance level of a …
WebResults: Laboratory bioassays using a Cry2Ab2-resistant (RR) strain, a susceptible (SS) strain, as well as cross and backcross strains, revealed that resistance to Cry2Ab2 was … WebJul 1, 2024 · Cry2Ab2 resistance in this H. zea strain is autosomal, non-recessive and polygenic ( Yang et al., 2024a ). Here, we provide the first studies evaluating the responses of Cry2Ab2-resistant, susceptible, and heterozygous strains of H. zea to Cry1Ac, Cry1A.105, Cry2Ab2 and Vip3Aa39 protein using diet-overlay bioassays. cooperative project
Estimation of resistance allele frequencies to Cry1A.105 and Cry2Ab2 …
WebNov 1, 2024 · The Cry2Ab2 resistance allele frequency estimated in the H. zea populations collected during 2024 from the southeastern Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. Acknowledgments Web( a) Residues of Bacillus thuringiensis Cry2Ab2 protein in or on corn or cotton are exempt from the requirement of a tolerance when used as a plant-incorporated protectant in the food and feed commodities of corn; corn, field; corn, sweet; corn, pop; and cotton seed, cotton oil, cotton meal, cotton hay, cotton hulls, cotton forage, and cotton gin … WebA novel cry2Ab gene was cloned and sequenced from the indigenous isolate of Bacillus thuringiensis subsp. kurstaki. This gene was designated as cry2Ab25 and its sequence … coopmagazin sudoku