Field Response of New Peanut Cultivar UF 91108 to Tomato Spotted Wilt Virus

Culbreath, A.K. and Todd, J.W. and Gorbet, D.W. and et al, . (1997) Field Response of New Peanut Cultivar UF 91108 to Tomato Spotted Wilt Virus. Plant Disease, 81 (12). pp. 1410-1415.

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In 2 locations during 1994-95, epidemics of tomato spotted wilt tospovirus (TSWV) were monitored in field plots of groundnut cultivar UF91108, in advanced breeding line F84 × 9B-4-2-1-1-2-b2-B, in runner-type cultivars Southern Runner and Florunner and in Virginia-type NC-V11. TSWV epidemics were suppressed in UF91108 compared with Florunner. Final disease incidence, standardized area under the disease progress curve values, and final disease intensity ratings were lower in UF91108 than in Florunner, and were similar to those in the moderately resistant Southern Runner. It is suggested that UF91108 has potential for management of TSWV in groundnut production areas of the southeastern USA. UF91108 is the first groundnut cultivar in which an oil composition of ca. 65% oleic acid is combined with a moderate level of field resistance to TSWV. Epidemics of TSWV were also suppressed in breeding line F84 × 9B-4-2-1-1-2-b2-B. The effects of the disease on NC-V11 were not consistent over the 4 tests conducted. Using final disease intensity ratings to separate the genotypes gave similar results to using final disease incidence. In 3 of 4 experiments, final disease intensity ratings were more closely correlated with pod yield than was final incidence. It is concluded that the new intensity rating method requires less time than determining disease incidence, and may be a practical alternative to individual plant assessment for characterization of genotype responses to TSWV.

Item Type: Article
Additional Information: SNNigam Collection
Uncontrolled Keywords: Disease resistance, epidemiology, Frankliniella fusca, F. occidentalis, groundnut, multiple pathogen resistance, thrips.
Author Affiliation: Department of Plant Pathology, University of Georgia Coastal Plain Experiment Station, Tifton, GA 31793-0748, USA.
Subjects: Plant Production > Farming Systems
Plant Protection > Pests
Divisions: Groundnut
Depositing User: Mr Balakrishna Garadasu
Date Deposited: 02 Apr 2013 09:08
Last Modified: 02 Apr 2013 09:08
Official URL:

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