Identification of putative QTL that underlie yield in interspecific soybean backcross populations

Wang, D.; Graef, George L.; Procopiuk, A. M.; Diers, Brian W.

doi:10.1007/s00122-003-1449-z

Cited by 148 publications

(126 citation statements)

References 41 publications

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“…This can be attributed to the fact that the cultivated soybean inherited the salt-tolerant gene from wild soybean during the domestication process. Wang et al (2004) tried to identify Fig. 1.…”

Section: Resultsmentioning

confidence: 99%

Conserved salt tolerance quantitative trait locus (QTL) in wild and cultivated soybeans

Hamwieh

2008

Breed. Sci.

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In the present study, we investigated salt tolerance heredity in wild soybean, Glycine soja Sieb & Zucc., and compared the salt tolerance quantitative trait locus (QTL) of G. soja with that of Glycine max (L.) Merr. An F 2 population (n = 225) derived from a cross between the salt sensitive soybean cultivar Jackson (PI548657) and a salt-tolerant wild soybean accession (JWS156-1) was used. Evaluation of salt tolerance in the seedling stage was carried out in hydroponic culture with half-strength Hoagland and Arnon nutrient solution containing 120 mM NaCl. Visual ratings of symptoms based on leaf scorching and chlorophyll content (SPAD value) were taken for each plant 20 days after salt treatment. Both traits showed continuous distribution; however, salt-tolerant plants (i.e. plants with a high salt tolerance rating (STR) and SPAD value) were predominant. QTL analysis revealed a major salt-tolerant QTL with a large dominant effect, which accounted for 68.7% of the total variance of the STR scale, on the soybean linkage group N. Our results indicated that the salt tolerance QTL confers a large dominant effect over salt sensitivity and that the salt tolerance QTL is conserved in both wild and cultivated soybeans.

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Section: Resultsmentioning

confidence: 99%

Conserved salt tolerance quantitative trait locus (QTL) in wild and cultivated soybeans

Hamwieh

2008

Breed. Sci.

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“…In addition, the number of lines in the W population was smaller than the E population, which would make it less likely to identify small effect QTL in the W population. The only yield QTL mapped by CIM and MCIM in the W population is on chromosome 3 and several yield QTL have been previously reported on this chromosome (Smalley et al 2004;Kassem et al 2006;Kabelka et al 2004;Specht et al 2001;Wang et al 2004). The LOD peak for the yield QTL on chromosome 3 mapped in the present study is at 92.1 cM (Table 8; http://soybase.org).…”

Section: W Populationmentioning

confidence: 87%

“…The LOD peak for the yield QTL on chromosome 3 mapped in the present study is at 92.1 cM (Table 8; http://soybase.org). The closet previously mapped yield QTL was linked to Satt257 (Wang et al 2004;Guzman et al 2007) and its genetic location was 74.7 cM in the G. max consensus map 4.0 (Table 8). Because the QTL we mapped is 17.4 cM from these previously mapped QTL, it is likely that this is a newly identified QTL.…”

Section: W Populationmentioning

confidence: 91%

“…Kabelka et al (2004) identified nine positive yield QTL alleles that trace to the exotic soybean germplasm accessions FC 04007B and PI 68508. Wang et al (2004) reported four positive yield QTL alleles from G. soja PI 468916; however, the QTL were only identified when the significance threshold was reduced and the data were analyzed with simple linear regression. Li et al (2008) reported one positive yield QTL allele from G. soja and the QTL mapped to the same region on chromosome 5 where Kabelka et al (2004) also reported a yield QTL.…”

Section: Introductionmentioning

confidence: 99%

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Identification of positive yield QTL alleles from exotic soybean germplasm in two backcross populations

et al. 2012

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Increasing seed yield is an important breeding goal of soybean [Glycine max (L.) Merr.] improvement efforts. Due to the small number of ancestors and subsequent breeding and selection, the genetic base of current soybean cultivars in North America is narrow. The objective of this study was to map quantitative trait loci (QTL) in two backcross populations developed using soybean plant introductions as donor parents. The first population included 116 BC 2 F 3 -derived lines developed using ''Elgin'' as the recurrent parent and PI 436684 as the donor parent (E population). The second population included 93 BC 3 F 3 -derived lines developed with ''Williams 82'' as the recurrent parent and PI 90566-1 as the donor parent (W population). The two populations were evaluated with 1,536 SNP markers and during 2 years for seed yield and other agronomic traits. Genotypic and phenotypic data were analyzed using the programs MapQTL and QTLNetwork to identify major QTL and epistatic QTL. In the E population, two yield QTL were identified by both MapQTL and QTLNetwork, and the PI 436684 alleles were associated with yield increases. In the W population, a QTL allele from PI 90566-1 accounted for 30 % of the yield variation; however, the PI region was also associated with later maturity and shorter plant height. No epistasis for seed yield was identified in either population. No yield QTL was previously reported at the regions where these QTL map indicating that exotic germplasm can be a source of new alleles that can improve soybean yield.

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“…A QTL region controlling plant height, lodging and yield spans ~1.2Mbp on chromosome 9 (ref. 41). In this region, four genes were identified with large-effect SNP and/or indels (Supplementary Table 25).…”

Section: Npgmentioning

confidence: 99%

De novo assembly of soybean wild relatives for pan-genome analysis of diversity and agronomic traits

et al. 2014

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Wild relatives of crops are an important source of genetic diversity for agriculture, but their gene repertoire remains largely unexplored. We report the establishment and analysis of a pan-genome of Glycine soja, the wild relative of cultivated soybean Glycine max, by sequencing and de novo assembly of seven phylogenetically and geographically representative accessions. Intergenomic comparisons identified lineage-specific genes and genes with copy number variation or large-effect mutations, some of which show evidence of positive selection and may contribute to variation of agronomic traits such as biotic resistance, seed composition, flowering and maturity time, organ size and final biomass. Approximately 80% of the pan-genome was present in all seven accessions (core), whereas the rest was dispensable and exhibited greater variation than the core genome, perhaps reflecting a role in adaptation to diverse environments. This work will facilitate the harnessing of untapped genetic diversity from wild soybean for enhancement of elite cultivars.

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Identification of putative QTL that underlie yield in interspecific soybean backcross populations

Cited by 148 publications

References 41 publications

Conserved salt tolerance quantitative trait locus (QTL) in wild and cultivated soybeans

Conserved salt tolerance quantitative trait locus (QTL) in wild and cultivated soybeans

Identification of positive yield QTL alleles from exotic soybean germplasm in two backcross populations

De novo assembly of soybean wild relatives for pan-genome analysis of diversity and agronomic traits

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