Advanced Backcross Quantitative Trait Loci (QTL) Analysis of Oil Concentration and Oil Quality Traits in Peanut (Arachis hypogaea L.)

Wilson, J. N.; Chopra, Ratan; Baring, Michael R.; Selvaraj, Michael Gomez; Simpson, C. E.; Chagoya, Jennifer; Burow, Mark D.

doi:10.1007/s12042-016-9180-5

Cited by 32 publications

(30 citation statements)

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“…Compared with the previous results, chromosome A03, A04, A08, B06, B07, and B08 were also found to harbor QTLs for oil content [11,12,14]. For instance, the associated marker AHGS0798 on chromosome B06 (124.9 Mb), is close to qOCB06.1 (121.9 Mb-124 Mb) detected in the RIL population derived from Xuhua 13 and Zhonghua 6 [14].…”

Section: Evaluation Of Ril Population and Confirmation Of Associated contrasting

confidence: 68%

“…For instance, the associated marker AHGS0798 on chromosome B06 (124.9 Mb), is close to qOCB06.1 (121.9 Mb-124 Mb) detected in the RIL population derived from Xuhua 13 and Zhonghua 6 [14]. Another two markers (TC1A02 and AHGS0393), which were highly linked to QTLs for oil content in the early studies [11,12], were located at 127.5 Mb and 139.3 Mb on chromosome B06. These results suggested that AHGS0798 with PVE of 7.28% would be a reliable marker associated with oil content.…”

Section: Evaluation Of Ril Population and Confirmation Of Associated mentioning

confidence: 69%

“…For instance, six and nine QTLs for oil content have been respectively identified in two different recombinant inbred line (RIL) populations [11]. Subsequently, three and eight QTLs were detected in an advanced backcross population and RIL population, respectively [12,13]. Most recently, seven QTLs for oil content were detected in a RIL population, including one major and stable QTL with 10.14-27.19% phenotypic variance explained (PVE) [14].…”

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confidence: 99%

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Dissection of the genetic basis of oil content in Chinese peanut cultivars by association mapping

Liu¹,

Huang²,

Chen³

et al. 2020

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Background Peanut is one of the primary sources for vegetable oil worldwide, and enhancing oil content is the main objective in these peanut breeding programs. Linked markers for oil content is required for use in genomics-assisted breeding (GAB), and association mapping is one of the promising approaches for discovery of associated markers. Results An association mapping panel consisting of 292 peanut varieties extensively distributed in China were phenotyped for oil content and genotyped with 583 polymorphic SSR markers. These markers amplified 3663 alleles with an average of 6.28 alleles per locus. The results of structure, phylogenetic relationship, and PCA analyses indicated two subgroups majorly differentiating based on geographic regions. Genome-wide association analysis using genetic and phenotypic data identified 12 associated markers including one (AGGS1014_2) highly stable association controlling up to 9.94% phenotypic variance explained (PVE) across multiple environments. Interestingly, the frequency of the favorable alleles for 12 associated markers showed a geographic difference. Two associated markers AGGS1014_2 and AHGS0798 with 6.90-9.94% PVE were verified to enhance oil content in an independent RIL population. The combined genotypes of AGGS1014_2 and AHGS0798 appeared to experience selection during the breeding program. Conclusion This study provided insights into the genetic basis of oil content in peanut and verified that two SSR markers were highly associated with oil content. Our results could facilitate marker-assisted selection for high-oil content breeding.

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Section: Evaluation Of Ril Population and Confirmation Of Associated contrasting

confidence: 68%

Section: Evaluation Of Ril Population and Confirmation Of Associated mentioning

confidence: 69%

mentioning

confidence: 99%

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Dissection of the genetic basis of oil content in Chinese peanut cultivars by association mapping

Liu¹,

Huang²,

Chen³

et al. 2020

Preprint

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“…In this study, associated markers were widely located on chromosome A03, A04, A08, A09, A10, B01, B06, B07, and B08 (Additional le 1: Table S1) based on the information from previous linkage maps and the physical location on genome [25,[42][43][44]. Compared with the previous results, chromosome A03, A04, A08, B06, B07, and B08 were also found to harbor QTLs for oil content [13,14,16]. For instance, the associated marker AHGS0798 on chromosome B06 (124.9Mb), is close to qOCB06.1 (121.9Mb-124Mb) detected in the RIL population derived from Xuhua 13 and Zhonghua 6 [16].…”

Section: Association Analysis For Oil Contentmentioning

confidence: 53%

“…For instance, the associated marker AHGS0798 on chromosome B06 (124.9Mb), is close to qOCB06.1 (121.9Mb-124Mb) detected in the RIL population derived from Xuhua 13 and Zhonghua 6 [16]. Another two markers (TC1A02 and AHGS0393), which were highly linked to QTLs for oil content in the early studies [13,14], were located at 127.5Mb and 139.3Mb on chromosome B06. These results suggested that AHGS0798 with PVE of 7.28% would be a reliable marker associated with oil content.…”

Section: Association Analysis For Oil Contentmentioning

confidence: 69%

Dissection of the genetic basis of oil content in Chinese peanut cultivars through association mapping

Liu

Huang

Chen

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: Peanut is one of the primary sources for vegetable oil worldwide, and enhancing oil content is the main objective in several peanut breeding programs of the world. Tightly linked markers are required for faster development of high oil content peanut varieties through genomics-assisted breeding (GAB), and association mapping is one of the promising approaches for discovery of such associated markers. Results: An association mapping panel consisting of 292 peanut varieties extensively distributed in China was phenotyped for oil content and genotyped with 583 polymorphic SSR markers. These markers amplified 3663 alleles with an average of 6.28 alleles per locus. The structure, phylogenetic relationship, and principal component analysis (PCA) indicated two subgroups majorly differentiating based on geographic regions. Genome-wide association analysis identified 12 associated markers including one (AGGS1014_2) highly stable association controlling up to 9.94% phenotypic variance explained (PVE) across multiple environments. Interestingly, the frequency of the favorable alleles for 12 associated markers showed a geographic difference. Two associated markers (AGGS1014_2 and AHGS0798) with 6.90-9.94% PVE were verified to enhance oil content in an independent RIL population and also indicated selection during the breeding program. Conclusion: This study provided insights into the genetic basis of oil content in peanut and verified highly associated two SSR markers to facilitate marker-assisted selection for developing high-oil content breeding peanut varieties.

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Genetic Resources of Groundnut

et al. 2021

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Advanced Backcross Quantitative Trait Loci (QTL) Analysis of Oil Concentration and Oil Quality Traits in Peanut (Arachis hypogaea L.)

Cited by 32 publications

References 50 publications

Dissection of the genetic basis of oil content in Chinese peanut cultivars by association mapping

Dissection of the genetic basis of oil content in Chinese peanut cultivars by association mapping

Dissection of the genetic basis of oil content in Chinese peanut cultivars through association mapping

Genetic Resources of Groundnut

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