Association of elevated palmitate with agronomic and seed traits of soybean
dc.contributor.author | Hayes, Mark | |
dc.contributor.department | Agronomy | |
dc.date | 2020-11-22T06:49:05.000 | |
dc.date.accessioned | 2021-02-26T09:06:07Z | |
dc.date.available | 2021-02-26T09:06:07Z | |
dc.date.copyright | Mon Jan 01 00:00:00 UTC 2001 | |
dc.date.issued | 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> | |
dc.format.mimetype | application/pdf | |
dc.identifier | archive/lib.dr.iastate.edu/rtd/21258/ | |
dc.identifier.articleid | 22257 | |
dc.identifier.contextkey | 20252410 | |
dc.identifier.doi | https://doi.org/10.31274/rtd-20201118-222 | |
dc.identifier.s3bucket | isulib-bepress-aws-west | |
dc.identifier.submissionpath | rtd/21258 | |
dc.identifier.uri | https://dr.lib.iastate.edu/handle/20.500.12876/98625 | |
dc.language.iso | en | |
dc.source.bitstream | archive/lib.dr.iastate.edu/rtd/21258/Hayes_ISU_2001_H39.pdf|||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 | |
thesis.degree.discipline | Plant Breeding | |
thesis.degree.level | thesis | |
thesis.degree.name | Master of Science |
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