+ Site Statistics
References:
52,654,530
Abstracts:
29,560,856
PMIDs:
28,072,755
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Occurrence of greenbug biotype K in the field



Occurrence of greenbug biotype K in the field



Journal of Agricultural and Urban Entomology uary; 18(1): 23-34



The success of managing greenbugs, Schizaphis graminum (Rondani), with plant resistance has been challenged by the repeated occurrence of resistance-breaking biotypes. Biotypes recognized as seriously damaging to sorghum, Sorghum bicolor (L.) Moench, hybrids are C, E, I, and K. In 1995, biotype K, which damages sorghum resistant to biotype I, was first identified in a biotype I greenbug colony being reared in the greenhouse. This colony originated from greenbugs collected in a field of wheat in Haskell County, Kansas, in April 1992, and was maintained on susceptible sorghum. Documenting the presence of biotype K in the field was imperative. Field samples of greenbugs collected from wheat and sorghum in Kansas and Oklahoma from 1996 to 1998 were identified to biotypes. These samples indicated that biotype I was the dominant biotype on both crops. Biotypes E and K were present in about 21 and 12% of the samples collected from sorghum in 1998, respectively. Biotype K was identified in samples collected from 11 counties in Kansas and 10 counties in Oklahoma during the sampling period. It is a potential threat to future sorghum hybrids that may rely on PI 550610 for protection against greenbug damage. Studies conducted at constant temperatures of 22, 27, and 32[degree]C indicated that biotypes C, E, I, and K had similar reproductive capacity and survival at 22 and 27[degree]C.

(PDF emailed within 1 workday: $29.90)

Accession: 003513754

Download citation: RISBibTeXText


Related references

A new greenbug biotype from Ohio. Sorghum Newsletter 28: 61-63, 1985

Biological studies of a new greenbug biotype. J. econ. Ent, 54: 1171-73, 1961

Nonpreference of a biotype of the greenbug for a broomcorn cultivar. Journal of Economic Entomology. 65: 2, 623-624, 1972

New sources of resistance to greenbug, biotype I, in sorghum. Crop Science 33(1): 198-199, 1993

Inheritance of greenbug biotype G resistance in wheat. Crop Science 34(3): 626-628, 1994

Survey of greenbug biotype C and E on wheat in Arkansas. Arkansas farm research Arkansas Agricultural Experiment Station 37(3): 17, 1988

Resistance mechanisms of P.I. 240675 rye to biotype F greenbug. Southwestern Entomologist 23(2): 97-103, 1998

A new greenbug virulent to E-biotype resistant sorghum. Crop science 31(6): 1689-1691, 1991

Greenbug biotype Surveys in Oklahoma, 1991-1996. Journal of the Kansas Entomological Society 70(2): 120-128, 1997

The effect of greenbug gene (biotype C) on yield of wheat. Agronomy Abstracts: 64, 1983

Genetic analysis of biotype I greenbug resistance in sorghum. Euphytica 121(1): 87-91, 2001

A new biotype of greenbug, Schizaphis graminum found in Beijing. Acta Entomologica Sinica 41(2): 141-144, 1998

Plant resistance to a greenbug biotype injurious to sorghum. Journal of economic entomology: 62 (6) 1271-1274, 1969

Designation of a new greenbug, biotype K, injurious to resistant sorghum. Crop Science 37(3): 989-991, 1997

Phosphorus influence on the reproductive ability of a biotype E greenbug. Iraqi Journal of Agricultural Sciences, ' ZANCO' 6(4): 77-86, 1988