Associação genômica ampla para conteúdo de proteína, óleo e ácidos graxos em soja
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2019-12-18
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Universidade Federal de Goiás
Resumo
There has been growing interest in breeding programs with the aim of the development of superior
soybean genotypes for specific purposes, such as human feed. Therefore, traits such as protein, oil,
and fatty acids content are important to achieve these purposes. The aim of this research was to
identify genomic regions associated with the protein, oil, and fatty acids contents (palmitic, stearic,
oleic, linoleic, and linolenic acids) in seed, in 416 soybean accessions through genome-wide
association studies. The phenotypic data were obtained through a field trial carried out in
augmented blocks of Federer at the experimental unit of Seagro-GO, in Senador Canedo-GO, in
2007/2008 growing season. The contents of protein, oil, and fatty acids was quantified by specific
methods from the seeds. The accessions were genotyped with the Illumina Infinium SoySNP50K
Bead Chip with 52.041 single nucleotide polymorphisms (SNPs) markers. It was found that there
are no genetic structure patterns or kinship in the panel, an ideal condition for the analysis.
Following broad genomic association analysis, twelve significant SNPs located on seven
chromosomes were identified: three significant SNPs for oil and protein content in seed, two SNPs
for stearic acid content in seed and one SNP for each of the remaining traits. Candidate genes
included transcription factors and enzymes related directly or indirectly to the characters analyzed.
Detected markers can support identify genotypes with traits of interest.
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GONÇALVES, B. M. Associação genômica ampla para conteúdo de proteína, óleo e ácidos graxos em soja. 2019. 63 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2019.