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United States Department of Agriculture

Agricultural Research Service

Research Project: Conservation, Characterization, and Evaluation of Plant Genetic Resources and Associated Information

Location: Plant Genetic Resources Conservation Unit

Title: Genetic resources of the functional food, teramnus labialis (L.f.) spreng for improving seed number, flavonol content, oil %, and fatty acid compositions

item Morris, John
item Wang, Ming
item Tonnis, Brandon

Submitted to: Proceedings American Society of Horticultural Sciences
Publication Type: Abstract Only
Publication Acceptance Date: April 25, 2014
Publication Date: N/A

Technical Abstract: Teramnus labialis is used as food in India and has potential to be used as a functional food vegetable in the U.S.A. Photoperiod-sensitive T. labialis accessions were grown in the greenhouse from 2010 to 2011 and evaluated for flavonol content, oil %, and fatty acid compositions. Significant variations for seed numbers produced, flavonol content, oil %, and fatty acid compositions were detected. Seed numbers ranged from 758 to 3792. More quercetin (ranging from 0.615 to 2.120 mg/g) was produced in their seeds than the other flavonols. However kaempferol and isorhamnetin content ranged from 0 to 0.066 and 0 to 0.086 mg/g (dry seed weight basis), respectively among all accessions. Oil % ranged from 2.65 to 5.64 % and more oleic, linoleic, and linolenic acids ranging from 8.39 to 25.97, 31.82 to 41.44, and 17.7 to 28.15 %, respectively were produced among all T. labialis accessions. The seeds from all accessions also produced the least saturated fatty acid compositions (ranging from 0.10 to 15.36 %). Several significant correlations were also detected for these traits among the accessions. Quercetin showed highly significant positive correlations with kaempferol (r = 0.72, P < 0.0001), oil % (r = 0.65, P< 0.0001), and oleic acid (r = 0.66, P < 0.0001). Quercetin also showed a significant negative correlation with linoleic acid (r = -0.37, P < 0.001) and linolenic acid (r = -0.70, P < 0.0001). These correlations are important because useful breeding procedures could be conducted on improving flavonol, oil %, and fatty acid compositions in Teramnus labialis accessions.

Last Modified: 8/22/2014
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