Abstract
The reaction to flag smut [ Urocystis agropyri (Preuss) Schroet.] of F 3 and F 4 lines of 10 wheat ( Triticum aestivum L. em Thell.) crosses involving the parents ‘Spinkcota’, ‘lowin’ (highly resistant); ‘Games’, ‘Hurt’, ‘Golden’, ‘Dickson 114’ (resistant); ‘Ridit’ (moderately resistant); and CI 13749 (susceptible) was studied in a field near Bickleton, Wash. Segregation ratios in five crosses between highly resistant and resistant parents suggested that different large‐effect genes governed resistance to flag smut; no completely susceptible lines were recovered, which indicated that the parental combinations tested had one or more small‐effect genes for resistance in common with one another. Evidence suggested that lowin has two large‐effect genes for resistance that differ from those possessed by Spinkcota, Dickson 114, and Gaines. Ridit probably has one gene for moderate resistance that is not common to Spinkcota, Dickson 114, and Gaines. The segregation patterns for reaction of two crosses involving the susceptible parent, CI 13749, suggested complementary resistance. Results indicated that a minimum of four different large‐effect and three small‐effect genes for flag smut resistance were represented among the eight parents studied. No associations were found between percentage of flag smut and plant height, stripe rust reaction, maturity, and spike type. Percentage of flag smut was associated with chaff color in two of seven crosses and with awn expression in one of five crosses.
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Claims 10
Claim · model-written summary
Segregation in five crosses suggested distinct large effect genes for flag smut resistance.
- Taxon
- Wheat
Triticum aestivumt0 - Interactor
- flag smute0pathogen
- Gene
- different large‐effect genese0
- Outcome
- resistance to flag smute0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Segregation ratios in five crosses between highly resistant and resistant parents suggested that different large‐effect genes governed resistance to flag smut”
t0“Wheat”
Claim · model-written summary
No completely susceptible lines were recovered, suggesting shared small effect resistance genes.
- Taxon
- WheatTriticum aestivumt0
- Gene
- small‐effect genese0
- Outcome
- no completely susceptible lines were recoverede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no completely susceptible lines were recovered, which indicated that the parental combinations tested had one or more small‐effect genes for resistance in common with one another”
t0“Wheat”
Claim · model-written summary
Lowin appeared to have two large effect resistance genes different from those in three other parents.
- Taxon
- WheatTriticum aestivumt0
- Material
- lowine0
- Gene
- two large‐effect genese0
- Outcome
- resistancee0
- Comparator
- Spinkcota, Dickson 114, and Gainese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lowin has two large‐effect genes for resistance that differ from those possessed by Spinkcota, Dickson 114, and Gaines”
t0“Wheat”
Claim · model-written summary
Ridit probably has one moderate resistance gene absent from three other parents.
- Taxon
- WheatTriticum aestivumt0
- Material
- Ridite0
- Gene
- one genee0
- Outcome
- moderate resistancee0
- Comparator
- Spinkcota, Dickson 114, and Gainese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ridit probably has one gene for moderate resistance that is not common to Spinkcota, Dickson 114, and Gaines”
t0“Wheat”
Claim · model-written summary
Segregation in two crosses involving CI 13749 suggested complementary resistance.
- Taxon
- WheatTriticum aestivumt0
- Material
- CI 13749e0
- Outcome
- complementary resistancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The segregation patterns for reaction of two crosses involving the susceptible parent, CI 13749, suggested complementary resistance”
t0“Wheat”
Claim · model-written summary
At least four distinct large effect genes were represented among eight parents.
- Taxon
- WheatTriticum aestivumt0
- Gene
- genese0
- Outcome
- large‐effecte0
- Value
- foure0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a minimum of four different large‐effect and three small‐effect genes for flag smut resistance were represented among the eight parents studied”
t0“Wheat”
Claim · model-written summary
At least three small effect genes were represented among eight parents.
- Taxon
- WheatTriticum aestivumt0
- Gene
- genese0
- Outcome
- small‐effecte0
- Value
- threee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a minimum of four different large‐effect and three small‐effect genes for flag smut resistance were represented among the eight parents studied”
t0“Wheat”
Claim · model-written summary
Flag smut percentage was not associated with plant height, stripe rust reaction, maturity or spike type.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- plant height, stripe rust reaction, maturity, and spike typee0
- Outcome
- percentage of flag smute0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No associations were found between percentage of flag smut and plant height, stripe rust reaction, maturity, and spike type”
t0“Wheat”
Claim · model-written summary
Flag smut percentage was associated with chaff color in two of seven crosses.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- chaff colore0
- Outcome
- Percentage of flag smute0
- Value
- two of seven crossese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percentage of flag smut was associated with chaff color in two of seven crosses”
t0“Wheat”
Claim · model-written summary
Flag smut percentage was associated with awn expression in one of five crosses.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- awn expressione0
- Outcome
- awn expressione0
- Value
- one of five crossese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with awn expression in one of five crosses”
t0“Wheat”