Abstract
The biotypic diversity of the Russian wheat aphid, Diuraphis noxia (Kurdjumov) (Hemiptera: Aphididae), was assessed in five isolates collected in Colorado. Three isolates, RWA 1, RWA 2, and an isolate from Montezuma County, CO, designated RWA 6, were originally collected from cultivated wheat, Triticum aestivum L., and obtained from established colonies at Colorado State University. The fourth isolate, designated RWA 7, was collected from Canada wildrye, Elymus canadensis L., in Baca County, CO. The fifth isolate, designated RWA 8, was collected from crested wheatgrass, Agropyron cristatum (L.) Gaertn., in Montezuma County, CO. The four isolates were characterized in a standard seedling assay, by using 24 plant differentials, 22 wheat lines and two barley, Hordeum vulgare L., lines. RWA 1 was the least virulent of the isolates, killing only the four susceptible entries. RWA 8 also killed only the four susceptible entries, but it expressed intermediate virulence on seven wheat lines. RWA 6, killing nine entries, and RWA 7, killing 11 entries, both expressed an intermediate level of virulence overall, but differed in their level of virulence to ‘CO03797′ (Dn1), ‘Yumar’ (Dn4), and ‘CO960293-2′. RWA 2 was the most virulent isolate, killing 14 entries, including Dn4- and Dny-containing wheat. Four wheat lines, ‘94M370′ (Dn7), ‘STARS 02RWA2414-11′, CO03797, and ‘CI2401′, were resistant to the five isolates. The results of this screening confirm the presence of five unique Russian wheat aphid biotypes in Colorado.
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Claims 9
Claim · model-written summary
RWA 1 was least virulent, killing four susceptible entries.
- Taxon
- wheat
Triticum aestivumt0 - Interactor
- RWA 1e0pest
- Outcome
- killing only the four susceptible entriese0
- Direction
- least virulente0
- Value
- four susceptible entriese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RWA 1 was the least virulent of the isolates, killing only the four susceptible entries.”
t0“Wheat”
Claim · model-written summary
RWA 8 killed four susceptible entries.
- Taxon
- wheatTriticum aestivume0
- Interactor
- RWA 8e0pest
- Outcome
- killed only the four susceptible entriese0
- Value
- four susceptible entriese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RWA 8 also killed only the four susceptible entries, but it expressed intermediate virulence on seven wheat lines.”
Claim · model-written summary
RWA 8 showed intermediate virulence on seven wheat lines.
- Taxon
- wheatTriticum aestivume0
- Interactor
- RWA 8e0pest
- Outcome
- intermediate virulencee0
- Value
- seven wheat linese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RWA 8 also killed only the four susceptible entries, but it expressed intermediate virulence on seven wheat lines.”
Claim · model-written summary
RWA 6 killed nine entries and showed intermediate overall virulence.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- RWA 6e0pest
- Outcome
- killing nine entriese0
- Value
- nine entriese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RWA 6, killing nine entries, and RWA 7, killing 11 entries, both expressed an intermediate level of virulence overall”
t0“Wheat”
Claim · model-written summary
RWA 7 killed 11 entries and showed intermediate overall virulence.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- RWA 7e0pest
- Outcome
- killing 11 entriese0
- Value
- 11 entriese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RWA 6, killing nine entries, and RWA 7, killing 11 entries, both expressed an intermediate level of virulence overall”
t0“Wheat”
Claim · model-written summary
RWA 6 and RWA 7 differed in virulence on CO03797, Yumar and CO960293-2.
- Taxon
- wheatTriticum aestivumt0
- Material
- ‘CO03797′ (Dn1), ‘Yumar’ (Dn4), and ‘CO960293-2′e0
- Interactor
- RWA 6e1pest
- Outcome
- differed in their level of virulencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but differed in their level of virulence to ‘CO03797′ (Dn1), ‘Yumar’ (Dn4), and ‘CO960293-2′.”
t0“Wheat”
e1“RWA 6, killing nine entries”
Claim · model-written summary
RWA 2 was the most virulent isolate, killing 14 entries including Dn4- and Dny-containing wheat.
- Taxon
- wheatTriticum aestivume0
- Material
- Dn4- and Dny-containing wheate0
- Interactor
- RWA 2e0pest
- Outcome
- killing 14 entriese0
- Direction
- most virulente0
- Value
- 14 entriese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RWA 2 was the most virulent isolate, killing 14 entries, including Dn4- and Dny-containing wheat.”
Claim · model-written summary
Four wheat lines resisted all five isolates.
- Taxon
- wheatTriticum aestivume0
- Material
- ‘94M370′ (Dn7), ‘STARS 02RWA2414-11′, CO03797, and ‘CI2401′e0
- Interactor
- five isolatese0pest
- Outcome
- resistant to the five isolatese0
- Value
- Four wheat linese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four wheat lines, ‘94M370′ (Dn7), ‘STARS 02RWA2414-11′, CO03797, and ‘CI2401′, were resistant to the five isolates.”
Claim · model-written summary
The screening confirmed five unique Russian wheat aphid biotypes in Colorado.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- Russian wheat aphid
Diuraphis noxiae0pest - Outcome
- presence of five unique Russian wheat aphid biotypese0
- Value
- five unique Russian wheat aphid biotypese0
- Setting
- Coloradoe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results of this screening confirm the presence of five unique Russian wheat aphid biotypes in Colorado.”
t0“Wheat”