Environmental Entomology (1990) 19, 167-175

E.A. Heinrichs and H.R. Rapusas (1990)
Response to selection for virulence of Nephotettix virescens (Homoptera: Cicadellidae) on resistant rice cultivars
Environmental Entomology 19 (1), 167-175
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.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Elvis Arden Heinrichs

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
transmission/dispersal of plant diseases

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nephotettix virescens	Rice (Oryza)	Philippines