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A New Species of Gall Midge (Diptera: Cecidomyiidae) Infesting Switchgrass in the Northern Great Plains

Content Provider	Springer Nature Link
Author	Boe, Arvid Gagné, Raymond J.
Copyright Year	2010
Abstract	A new species of gall midge, Chilophaga virgati Gagné (Diptera: Cecidomyiidae), collected from tillers of switchgrass at Brookings, South Dakota (44.31134° N, 96.78374° W) is described here. Plant morphological symptoms of infestation and frequency of tillers infested are also provided. Full-grown larvae of C. virgati were found inside the sheath of the flag leaf of reproductive tillers of clonally replicated spaced plants of a selected southern upland population of switchgrass during October 2008 and 2009. Infested tillers were shorter and lighter than normal tillers and had panicles that were partially encased in the sheath of the flag leaf due to reduced elongation of the peduncle as a result of the feeding of larvae of C. virgati at the proximal end of the panicle and in the intercalary meristem area of the peduncle. Variation was found among 10 genotypes for percentage of tillers infested by C. virgati, with a range from 7.2% to 21.8%. No difference was found between years for infestation rate (12.7% in 2008 and 14.3% in 2009). The mass of infested tillers was 35% that of normal tillers, and infested tillers produced no appreciable amount of viable seeds. Results of this research revealed that C. virgati had direct negative impacts on biomass and seed production in spaced plant nurseries of switchgrass. C. virgati was also observed in seeded swards of northern upland switchgrass cultivars, but its impact in seeded swards has not yet been determined.
Starting Page	77
Ending Page	84
Page Count	8
File Format	PDF
ISSN	19391234
Journal	BioEnergy Research
Volume Number	4
Issue Number	2
e-ISSN	19391242
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-08-03
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biomass Cecidomyiidae Chilophaga virgati Diptera Gall midge Infestation rate Wood Science & Technology Plant Sciences Plant Breeding/Biotechnology Plant Genetics & Genomics Plant Ecology
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment Agronomy and Crop Science

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