Abstract
Two BC 3 F 2:5 winter wheat populations carrying Fusarium head blight (FHB) resistance quantitative trait loci (QTL) Fhb1 and Qfhs.ifa‐5A were tested for resistance and agronomic and baking‐quality performance in 10 high yielding environments. The objectives of this study were to determine (i) the resistance effect of the two nonadapted QTL, (ii) their side effects on agronomic and quality performance, and (iii) their relative advantage in European breeding programs. The two populations were split into four QTL classes containing either Fhb1 , Qfhs.ifa‐5A , both QTL or neither of them with about 25 (Opus BC 3 F 2:5 population) and 15 (Anthus BC 3 F 2:5 population) lines each class and check varieties. Disease resistance trials on microplots and yield trials on large plots had two replicates at five locations in Germany in each of 2 yr. Mean FHB ratings (%) between QTL classes carrying either one or two QTL showed significantly ( p < 0.05) improved FHB resistance and a significant variation within QTL classes. Small significant negative effects on grain yield were detected in the Anthus but not in the Opus BC 3 F 2:5 population. However, selection of lines with improved resistance level and similar high yield level like the recurrent parent was feasible. All other differences in agronomic and quality traits were in all cases small although often significant. The introgression of both QTL did not significantly improve the FHB resistance compared to Qfhs.ifa‐5A indicating that this QTL suffices for European breeding programs.
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Claims 7
Claim · model-written summary
Winter wheat lines carrying one or two FHB resistance QTL had significantly improved FHB resistance.
- Taxon
- winter wheat
Triticum aestivume0 - Treatment
- carrying either one or two QTLe1
- Outcome
- FHB resistancee1
- Direction
- improvede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two BC 3 F 2:5 winter wheat populations”
e1“Mean FHB ratings (%) between QTL classes carrying either one or two QTL showed significantly ( p < 0.05) improved FHB resistance”
Claim · model-written summary
Small significant negative effect on grain yield in the Anthus population.
- Taxon
- winter wheatTriticum aestivume0
- Material
- Anthuse2
- Outcome
- grain yielde2
- Direction
- negativee2
- Qualifier
- Smalle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two BC 3 F 2:5 winter wheat populations”
e2“Small significant negative effects on grain yield were detected in the Anthus but not in the Opus BC 3 F 2:5 population”
Claim · model-written summary
No significant effect of the QTL on grain yield in the Opus population.
- Taxon
- winter wheatTriticum aestivume0
- Material
- Opuse2
- Outcome
- grain yielde2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two BC 3 F 2:5 winter wheat populations”
e2“Small significant negative effects on grain yield were detected in the Anthus but not in the Opus BC 3 F 2:5 population”
Claim · model-written summary
Selection of lines with improved resistance and similar high yield to the recurrent parent was feasible.
- Taxon
- winter wheatTriticum aestivume0
- Outcome
- selection of lines with improved resistance level and similar high yield levele3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two BC 3 F 2:5 winter wheat populations”
e3“However, selection of lines with improved resistance level and similar high yield level like the recurrent parent was feasible”
Claim · model-written summary
Other differences in agronomic and quality traits between QTL classes were small.
- Taxon
- winter wheatTriticum aestivume0
- Outcome
- differences in agronomic and quality traitse4
- Qualifier
- small although often significante4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two BC 3 F 2:5 winter wheat populations”
e4“All other differences in agronomic and quality traits were in all cases small although often significant”
Claim · model-written summary
Introgression of both QTL did not significantly improve FHB resistance compared with Qfhs.ifa.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- introgression of both QTLe5
- Outcome
- FHB resistancee5
- Direction
- did not significantly improvee5
- Comparator
- Qfhs.ifae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two BC 3 F 2:5 winter wheat populations”
e5“The introgression of both QTL did not significantly improve the FHB resistance compared to Qfhs.ifa”
Claim · model-written summary
The Qfhs.ifa QTL alone suffices for European winter wheat breeding programs.
- Taxon
- winter wheatTriticum aestivume0
- Outcome
- this QTL suffices for European breeding programse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two BC 3 F 2:5 winter wheat populations”
e6“indicating that this QTL suffices for European breeding programs”
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