Genetic dissection of natural variation in oilseed traits of camelina by whole-genome resequencing and QTL mapping
AffiliationArizona Genomics Institute, School of Plant Sciences, University of Arizona
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PublisherJohn Wiley and Sons Inc
CitationLi, H., Hu, X., Lovell, J. T., Grabowski, P. P., Mamidi, S., Chen, C., Amirebrahimi, M., Kahanda, I., Mumey, B., Barry, K., Kudrna, D., Schmutz, J., Lachowiec, J., & Lu, C. (2021). Genetic dissection of natural variation in oilseed traits of camelina by whole-genome resequencing and QTL mapping. Plant Genome.
RightsCopyright © 2021 The Authors. The Plant Genome published by Wiley Periodicals LLC on behalf of Crop Science Society of America. This is an open access article under the terms of the Creative Commons Attribution License.
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AbstractCamelina [Camelina sativa (L.) Crantz] is an oilseed crop in the Brassicaceae family that is currently being developed as a source of bioenergy and healthy fatty acids. To facilitate modern breeding efforts through marker-assisted selection and biotechnology, we evaluated genetic variation among a worldwide collection of 222 camelina accessions. We performed whole-genome resequencing to obtain single nucleotide polymorphism (SNP) markers and to analyze genomic diversity. We also conducted phenotypic field evaluations in two consecutive seasons for variations in key agronomic traits related to oilseed production such as seed size, oil content (OC), fatty acid composition, and flowering time. We determined the population structure of the camelina accessions using 161,301 SNPs. Further, we identified quantitative trait loci (QTL) and candidate genes controlling the above field-evaluated traits by genome-wide association studies (GWAS) complemented with linkage mapping using a recombinant inbred line (RIL) population. Characterization of the natural variation at the genome and phenotypic levels provides valuable resources to camelina genetic studies and crop improvement. The QTL and candidate genes should assist in breeding of advanced camelina varieties that can be integrated into the cropping systems for the production of high yield of oils of desired fatty acid composition. © 2021 The Authors. The Plant Genome published by Wiley Periodicals LLC on behalf of Crop Science Society of America
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Except where otherwise noted, this item's license is described as Copyright © 2021 The Authors. The Plant Genome published by Wiley Periodicals LLC on behalf of Crop Science Society of America. This is an open access article under the terms of the Creative Commons Attribution License.