Abstract
ABSTRACT Soybean [ Glycine max (L.) Merrill] plant introductions (PIs) are potential sources of useful genes for breeding. We mapped quantitative trait loci (QTL) for yield and other agronomic traits, and determined QTL × environment (QTL × E) and epistatic interactions for yield in three backcross (BC) populations. The populations were developed using PIs as donor parents and ‘Beeson 80’, ‘Kenwood’, and ‘Lawrence’ as recurrent parents (RP). Sixty‐eight BC 2 F 5 ‐derived lines in the Beeson 80 population, 74 BC 1 F 5 ‐derived lines in the Kenwood population, and 94 BC 3 F 2 ‐derived lines in the Lawrence population were tested along with the RP and checks in 2003 and 2004. Nineteen QTL for three other agronomic traits were identified, as well as 13 yield QTL. The yield‐increasing allele was from the PI parent for eight yield QTL. Yield‐increasing alleles were associated with delayed maturity for three yield QTL, and one allele was associated with increased lodging and plant height. All yield QTL mapped to regions where yield QTL have been reported previously. The significant QTL × E interaction was due to undetectable or weak QTL effects in some environments. Nine digenic interactions for yield were detected in the Kenwood population, and were mostly between loci exhibiting epistatic effects only. Our results support previous findings that the current elite North American soybean gene pool is more diverse than would have been predicted by the number of contributing ancestors.
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Claims 9
Claim · model-written summary
Nineteen QTL for three other agronomic traits were identified.
- Taxon
- Soybean
Glycine maxt0 - Gene
- QTLe0
- Outcome
- three other agronomic traitse0
- Value
- Nineteene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nineteen QTL for three other agronomic traits were identified”
t0“QTL Associated with Yield in Three Backcross‐Derived Populations of Soybean”
Claim · model-written summary
Thirteen soybean yield QTL were identified.
- Taxon
- SoybeanGlycine maxt0
- Gene
- QTLe0
- Outcome
- yielde0
- Value
- 13e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as well as 13 yield QTL”
t0“QTL Associated with Yield in Three Backcross‐Derived Populations of Soybean”
Claim · model-written summary
The yield-increasing allele came from the PI parent for eight yield QTL.
- Taxon
- SoybeanGlycine maxt0
- Material
- PI parente0
- Gene
- yield QTLe0
- Outcome
- yielde0
- Direction
- yield‐increasinge0
- Value
- eighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield‐increasing allele was from the PI parent for eight yield QTL.”
t0“QTL Associated with Yield in Three Backcross‐Derived Populations of Soybean”
Claim · model-written summary
Yield-increasing alleles were linked to delayed maturity for three yield QTL.
- Taxon
- SoybeanGlycine maxt0
- Gene
- yield QTLe0
- Outcome
- delayed maturitye0
- Direction
- associated withe0
- Value
- threee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield‐increasing alleles were associated with delayed maturity for three yield QTL”
t0“QTL Associated with Yield in Three Backcross‐Derived Populations of Soybean”
Claim · model-written summary
One yield-increasing allele was linked to increased lodging and height.
- Taxon
- SoybeanGlycine maxt0
- Gene
- allelee0
- Outcome
- lodging and plant heighte0
- Direction
- increasede0
- Value
- onee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one allele was associated with increased lodging and plant height”
t0“QTL Associated with Yield in Three Backcross‐Derived Populations of Soybean”
Claim · model-written summary
All yield QTL mapped to regions where yield QTL had been previously reported.
- Taxon
- SoybeanGlycine maxt0
- Gene
- yield QTLe0
- Outcome
- mapped to regionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All yield QTL mapped to regions where yield QTL have been reported previously.”
t0“QTL Associated with Yield in Three Backcross‐Derived Populations of Soybean”
Claim · model-written summary
QTL by environment interaction was significant because effects were weak or undetectable in some environments.
- Taxon
- SoybeanGlycine maxt0
- Gene
- QTLe0
- Outcome
- QTL × E interactione0
- Direction
- undetectable or weake0
- Setting
- some environmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The significant QTL × E interaction was due to undetectable or weak QTL effects in some environments.”
t0“QTL Associated with Yield in Three Backcross‐Derived Populations of Soybean”
Claim · model-written summary
Nine digenic interactions for yield were detected in Kenwood, mostly between loci with epistatic effects only.
- Taxon
- SoybeanGlycine maxt0
- Material
- Kenwood populatione0
- Outcome
- digenic interactions for yielde0
- Value
- Ninee0
- Qualifier
- mostly between loci exhibiting epistatic effects onlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nine digenic interactions for yield were detected in the Kenwood population, and were mostly between loci exhibiting epistatic effects only.”
t0“QTL Associated with Yield in Three Backcross‐Derived Populations of Soybean”
Claim · model-written summary
The authors infer that the elite North American soybean gene pool is more diverse than expected from its ancestors.
- Taxon
- soybeanGlycine maxe0
- Outcome
- gene poole0
- Direction
- more diversee0
- Comparator
- number of contributing ancestorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the current elite North American soybean gene pool is more diverse than would have been predicted by the number of contributing ancestors.”