Selection for resistance to a nucleopolyhedrosis virus in laboratory populations of the cotton bollworm, Heliothis zea |
| |
Authors: | CM Ignoffo |
| |
Institution: | International Minerals and Chemical. Corp. Libertyville, Illinois 60048 USA; Florida Technological University, Orlando, Florida 32801 USA |
| |
Abstract: | Resistance to a nucleopolyhedrosis virus (Baculovirus heliothis) did not develop in laboratory populations of the cotton bollworm, Heliothis zea. A selection pressure of LD50 to 70 was maintained throughout 20 to 25 generations of selection. No significant changes in LD50, slope, or intercept of dose-mortality lines were detected. Laboratory populations under selection were as susceptible to the virus as nonselected or wild populations of H. zea. The resistance ratio (LD50 of selected generation/initial generation) ranged from 0.5 to 1.2. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|