Association of elevated palmitate with agronomic and seed traits of soybean Hayes, Mark
dc.contributor.department Agronomy 2020-11-22T06:49:05.000 2021-02-26T09:06:07Z 2021-02-26T09:06:07Z Mon Jan 01 00:00:00 UTC 2001 2001-01-01
dc.description.abstract <p>Conventional soybean [Glycine max (L.) Merr.] cultivars have approximately 11% palmitate in the seed oil. Increasing palmitate content may be beneficial for producing plastic fats at room temperature without the need for hydrogenation. Trans-fatty acids are produced from hydrogenation, which may be harmful to human health. The objective of the study was to compare soybean lines with 26%-palmitate content and lines with 40%-palmitate content for agronomic and seed traits. Three backcross populations were formed for this study. In each population, 27BC1F[Subscript 2:4] lines with 26%-palmitate and 27 lines with 40%-palmitate were tested at three locations in Iowa during 2000. The mean seed yield and content of oil in the 40%-palmitate lines were significantly less than that of the 26%-palmitate lines. None of the 40%-palmitate lines had a yield equal to any of the 26%-palmitate lines from the same population, and only one population had 40%-palmitate lines equal to 26%-palmitate lines for oil content. Protein content was significantly higher for the 40%-palmitate lines than the 26%-paimitate lines. The increase in protein did not compensate for the decrease in oil: therefore, the value of a metric ton of 40%-palmitate soybean was less than that of the 26%-palmitate type at current commodity prices for protein meal and oil. The 40%-palmitate lines had significantly lower mean plant population, lodging score, plant height, seed weight, oleate content, linoleate content, and stearate content than the 26%-palmitate lines in the three populations. Linolenate was significantly greater in the 40%-palmitate than the 26%-palmitate lines. The increase in palmitate content had adverse effects on agronomic and seed traits of soybean. Although there may be benefits of soybean oil with 40%-palmitate content, the negative associations with important agronomic and seed traits will make it difficult to develop cultivars that will be competitive with the conventional soybean.</p>
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dc.identifier archive/
dc.identifier.articleid 22257
dc.identifier.contextkey 20252410
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/21258
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 22:35:59 UTC 2022
dc.subject.keywords Agronomy
dc.subject.keywords Plant breeding
dc.title Association of elevated palmitate with agronomic and seed traits of soybean
dc.type article
dc.type.genre thesis
dspace.entity.type Publication
relation.isOrgUnitOfPublication fdd5c06c-bdbe-469c-a38e-51e664fece7a Plant Breeding thesis Master of Science
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