Entomology, Department of

 

Document Type

Article

Date of this Version

2-1990

Citation

Environmental Entomology 19:1 (February 1990), pp. 167–175.

doi: 10.1093/ee/19.1.167

Comments

Copyright © 1990 Entomological Society of America. Published by Oxford University Press. Used by permission.

Abstract

Rate of response to selection for Nephotettix virescens (Distant) virulence was studied for 20 generations on five rice cultivars with different levels of resistance. Rate of response to selection on all cultivars varied depending on the measurement criteria. Survival, growth, progeny production, and weight increased, and developmental period decreased, with selection time. Based on survival, the N. virescens population became highly virulent within one to four generations, whereas high virulence as measured by progeny production generally required more generations of selection. Virulence as measured by the ability to vector tungro virus also increased with selection time.

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