Bluegrass billbug feeding response to perennial triticeae grasses
Issue Date
1993-05-01Keywords
Sphenophorus parvulushost preferences
screening
Pascopyrum
Pseudoroegneria
crop damage
pest resistance
Elymus
Leymus
Psathyrostachys
Elytrigia
genome
Agropyron
genetic variation
perennials
mortality
species differences
Poaceae
rangelands
pasture plants
grasses
feeding preferences
Metadata
Show full item recordCitation
Nielson, D. C., Asay, K. H., & Jones, T. A. (1993). Bluegrass billbug feeding response to perennial triticeae grasses. Journal of Range Management, 46(3), 237-240.Publisher
Society for Range ManagementJournal
Journal of Range ManagementDOI
10.2307/4002613Additional Links
https://rangelands.org/Abstract
In a 4-year field study, 25 perennial triticeae grasses, representing a wide range of genomes and genome combinations, were evaluated as potential hosts for the bluegrass billbug (Sphenophorus parvulus Gyllenhal [Coleoptera: Curculionidae]). Root-sample data suggested that Russian wildrye (Psathyrostachys juncea [Fischer] Nevski) was unsuitable for billbug reproduction. Numbers of immatures varied significantly among remaining entries. Rhizomatous entries were more tolerant of billbug injury than caespitose entries. Plant mortality rates were frequently 50% or higher for self-pollinated caespitose entries with the SH genome complement (Elymus spp.). Losses to billbugs among the remaining species, particularly those with the J, N, and P genomes, were insignificant. Billbugs did not discriminate between native and introduced grasses, as resistant and susceptible entries were identified in both groups. The results obtained here may aid in selecting triticeae grasses for reseeding in areas where billbugs have damaged stands in the past.Type
textArticle
Language
enISSN
0022-409Xae974a485f413a2113503eed53cd6c53
10.2307/4002613