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- Title
Reactions of Mid-Southern U.S. Soybean Cultivars to Bean Pod Mottle Virus and Tobacco Ringspot Virus.
- Authors
Shakiba, Ehsan; Pengyin Chen; Gergerich, Rose; Shuxian Li; Dombek, Donald; Ainong Shi; Brye, Kristofor
- Abstract
Bean pod mottle virus (BPMV) and Tobacco ringspot virus (TRSV) are two important viral pathogens causing reduction of seed yield and quality in soybean [Glycine max (L.) Merr.]. Various BPMV and TRSV isolates have been observed, but no host resistance has been reported. The objective of this study was to screen a set of modern soybean cultivars for resistance or tolerance to BPMV and TRSV. A total of 303 cultivars currently grown in the mid-southern United States were screened in the greenhouse for their reactions to BPMV and TRSV. Each cultivar was inoculated with a mild and a virulent isolate of each virus. None of the cultivars tested was resistant to BPMV, but a range of tolerance to this virus was observed among the cultivars. An enzyme-linked immunosorbent assay (ELISA) confirmed the presence of BPMV in the high and low tolerance cultivars. Tolerance to BPMV is associated with less of a reduction in plant height and biomass on infected plants. Cultivars were classified into four groups, high, moderate, low, and very low tolerance, on the basis of their having exhibited ≤20, 21 to 40, 41 to 60, or >60% of a reduction in plant height and ≤25, 26 to 50, 51 to 75, and >75% plant biomass reduction, respectively. None of the cultivars was resistant to TRSV, and all showed bud blight symptoms by 10 d after inoculation. However, 55 cultivars recovered 5 wk after inoculation, with more than 80% of the plants growing out of the bud blight symptoms and forming new leaves. The recovered plants, although systemically infected, clearly showed tolerance to TRSV at a later stage. These results may be helpful to soybean producers for selecting tolerant cultivars to grow in areas where BPMV and/or TRSV may cause problems in production.
- Subjects
UNITED States; SOYBEAN varieties; BEAN pod mottle virus; TOBACCO ringspot virus; SEEDS; SOYBEAN; ENZYME-linked immunosorbent assay; SYMPTOMS
- Publication
Crop Science, 2012, Vol 52, Issue 5, p1980
- ISSN
0011-183X
- Publication type
Article
- DOI
10.2135/cropsci2011.02.0073