Full TGIF Record # 174182
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DOI:10.2135/cropsci2010.03.0163
Web URL(s):https://acsess.onlinelibrary.wiley.com/doi/10.2135/cropsci2010.03.0163
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Publication Type:
i
Refereed
Author(s):Keathley, Craig P.; Potter, Daniel A.
Author Affiliation:Dep. of Entomology, University of Kentucky, Lexington, KY
Title:Does modification of tall fescue leaf texture and forage nutritive value for improved livestock performance increase suitability for a grass-feeding caterpillar?
Section:Research
Other records with the "Research" Section
Source:Crop Science. Vol. 51, No. 1, January 2011, p. 370-380.
Publishing Information:Madison, WI: Crop Science Society of America
# of Pages:11
Keywords:TIC Keywords: Cultivar improvement; Feeding preferences; Festuca arundinacea; Insect surveys; Larva; Leaf texture; Noctuidae; Nutritional value
Abstract/Contents:"Grass breeders are developing new forage-type tall fescue [Schedonorus arundinaceus (Schreb.) Dumort = Lolium arundinaceum (Schreb.) Darbysh., formerly known as Festuca arundinacea Schreb.] cultivars with smoother texture, improved nutritive value, and reduced fiber for improved livestock performance. We tested if such grasses are also more susceptible to a grass-feeding caterpillar. True armyworms, Pseudaletia unipuncta (Haworth), were reared from first instar to adult on grass clippings from thirteen fescue cultivars or accessions differing in texture (smooth vs. standard), ecotype (northern European vs. Mediterranean), use (pasture vs. turf-type), or provenance to clarify how modifying the texture (edge spines, trichomes, or cellulose margin), thickness, tissue strength, and nutritive value (dry matter, fiber, ash, or N) of pasture grasses will affect their resistance. We also studied feeding site initiation and development of first instars on intact leaf blades when prevented from exploiting a cut leaf edge. Larvae performed equally well across all groups when reared with grass clippings, despite variation in leaf texture and nutritive value. On intact blades, however, leaf thickness and tissue strength were correlated with reduced feeding site initiation and larval development. Gregarious and window feeding may allow more efficient exploitation of common feeding sites on tougher leaves. True armyworm is adapted to feed on a range of structurally-diverse grasses, so increased use of forage-type tall fescue cultivars with smoother texture or reduced fiber is unlikely to worsen its damage to pastures."
Language:English
References:44
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Keathley, C. P., and D. A. Potter. 2011. Does modification of tall fescue leaf texture and forage nutritive value for improved livestock performance increase suitability for a grass-feeding caterpillar?. Crop Sci. 51(1):p. 370-380.
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DOI: 10.2135/cropsci2010.03.0163
Web URL(s):
https://acsess.onlinelibrary.wiley.com/doi/10.2135/cropsci2010.03.0163
    Last checked: 03/24/2024
    Access conditions: Item is within a limited-access website
https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2135/cropsci2010.03.0163
    Last checked: 03/24/2024
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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