Full TGIF Record # 136452
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Web URL(s):http://www.actahort.org/books/783/783_52.htm
    Last checked: 06/11/2008
    Access conditions: Item is within a limited access website
Publication Type:
i
Report
Author(s):Hale, T. C.; White, R. H.; Reinert, J. A.; Snook, M. E.
Title:Zoysiagrass (Zoysia spp.) resistance to fall armyworm (Spodoptera frugiperda): Polyphenols and flavonoids ¿ components of resistance
Meeting Info.:Proceedings of the II International Conference on Turfgrass Science and Management for Sports Fields: Beijing, China, June 24-29, 2007.
Source:Acta Horticulturae. Vol. 783, February 2008, p. 507-517.
Publishing Information:Leuven, Belgium: International Society for Horticultural Science
# of Pages:11
Keywords:TIC Keywords: Spodoptera frugiperda; Insect control; Insect resistance; Fertilization rates; Nitrogen fertilization; Zoysia; Polyphenols; Flavonoids
Abstract/Contents:"Leaf tissue collected from six zoysiagrass (Zoysia spp.) cultivars was analyzed for polyphenols and flavonoids by high performance liquid chromatography (HPLC). The experiment investigated the effects of sampling date and N fertilization rate on green leaf chemistry of zoysiagrass and their relationship to fall armyworm (FAW) [Spodoptera frugiperda (J. E. Smith)] resistance. Six zoysiagrasses cultivars {Crowne= (Z. japonica Steud.), Palisades= (Z. japonica Steud.), El Toro= (Z. japonica Steud.), Meyer= (Z. japonica Steud.), Cavalier= [Z. matrella (L.) Merr.], and 'Emerald' (Z. japonica Stued. × Z. tenuifolia Willd. ex Trin.)} were planted in a randomized split-plot design with 4 replicates using cultivars as the main plot and 12.2 and 48.9 kg of N ha-1 month-1 [(NH4)2SO4] as the split plots. Flavonoid concentration decreased as the amount of applied N increased. Flavonoid concentration was greatest in June and steadily declined throughout July and August. Two unidentified flavonoids (luteolin-glycosides) were consistently associated with FAW mortality when analyzed by stepwise regression techniques. Unidentified luteolin 3 had an inverse relationship with mortality, while unidentified luteolin 9 was positively correlated with mortality. Additional research is needed to determine if the concentration of luteolins found in resistant zoysiagrasses are sufficient to cause biocidal activity in FAW."
Language:English
References:0
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hale, T. C., R. H. White, J. A. Reinert, and M. E. Snook. 2008. Zoysiagrass (Zoysia spp.) resistance to fall armyworm (Spodoptera frugiperda): Polyphenols and flavonoids ¿ components of resistance. Acta Horticulturae. 783:p. 507-517.
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Web URL(s):
http://www.actahort.org/books/783/783_52.htm
    Last checked: 06/11/2008
    Access conditions: Item is within a limited access website
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MSU catalog number: SB 13 .A25 no. 783
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