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| Web URL(s): | http://www.apsnet.org/publications/plantdisease/backissues/Documents/1994Articles/PlantDisease78n09_845.PDF
Last checked: 08/27/2010
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Welty, R. E.;
Craig, A. M.;
Azevedo, M. D. |
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| Author Affiliation: | Agricultural Research Service, United States Department of Agriculture, National Forage Seed Production Research Center, and College of Veterinary Medicine, Oregon State University, Corvallis, Oregon |
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| Title: | Variability of ergovaline in seeds and straw and endophyte infection in seeds among endophyte-infected genotypes of tall fescue |
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| Source: | Plant Disease. Vol. 78, No. 9, September 1994, p. 845-849. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 5 |
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| Collation: | Research |
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| Keywords: | TIC Keywords: Endophytes; Seeds; Genotypes; Fungus infection; Festuca arundinacea
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| Abstract/Contents: | "Individual plant genotypes of tall fescue (Festuca arundinacea) cultivar Kentucky 31 infected (E+) or not infected (E-) by the endophyte Acremonium coenophialum growing for 2 yr in field plots were evaluated for ergovaline in seeds and straw and for percent endophyte infection in seeds. Ergovaline (analyzed by HPLC) in straw from 25 E+ genotypes ranged from 8 to 1,268 ng/g in 1991 and from 0 to 478 ng/g in 1992; mean ergovaline concentration in straw from E+ genotypes in 1991 (292 ng/g) differed (F value = 7.42, P= 0.008) from that in 1992 (130 ng/g). Ergovaline concentration in seed ranged from 2 to 6,064 ng/g in 1991 and from 3 to 8,659 ng/g in 1992; mean ergovaline concentration in seeds from E+ genotypes was similar (F value = 0.21) in 1991 (2,509 ng/g) and 1992 (2,295 ng/g). Percent endophyte-infected seeds (stained and examined microscopically) among E+ genotypes was variable and ranged from 2 to 100% in 1991 and from 0 to 100% in 1992, but means were statistically similar (F value = 0.2) between years (84% in 1991 and 80% in 1992). This study provides evidence that among E+ genotypes of tall fescue growing in the field, variation exists in production of ergovaline and percent endophyte-infected seed. Furthermore, ergovaline in straw from E+ genotypes varies between years." |
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| Language: | English |
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| References: | 37 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Welty, R. E., A. M. Craig, and M. D. Azevedo. 1994. Variability of ergovaline in seeds and straw and endophyte infection in seeds among endophyte-infected genotypes of tall fescue. Plant Dis. 78(9):p. 845-849. |
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| Web URL(s):
http://www.apsnet.org/publications/plantdisease/backissues/Documents/1994Articles/PlantDisease78n09_845.PDF
Last checked: 08/27/2010
Requires: PDF Reader |
| 
MSU catalog number: SB 599 .P95 |
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