Variation in oil content and fatty acid composition of sesame accessions from different origins

Abstract

Oil content and fatty acid composition are very important parameters for the human consumption of oilseed crops. Twenty-four sesame accessions including seven collected from various geographical regions of Turkey and 11 from different countries were investigated under field conditions for two consecutive years (2015 and 2016). The sesame accessions varied widely in their oil content and fatty acid compositions. The oil content varied between 44.6 and 53.1% with an average value of 48.15%. The content of oleic acids, linoleic acid, linolenic acid, palmitic acid,and stearic acid varied between 36.13–43.63%, 39.13–46.38%, 0.28–0.4%, 8.19–10.26%, and 4.63–6.35%, respectively. When total oil content and fatty acid composition were compared, Turkish sesame showed wide variation in oil and fatty acid compositions compared to those from other countries. However, the accessions from other countries were fewer compared to those from Turkey. It is essential to compare oil and fatty acid composition using a large number of germ plasm from different origins. In sesame oil, the average contents of oleic acid and linoleic acid were 39.02% and 43.64%, respectively, and their combined average content was 82.66%, representing the major fatty acid components in the oil from the sesame accessions used in the present study. The results obtained in this study provide useful information for the identification of better parents with high linoleic and oleic acid contents for developing elite sesame varieties with traits which are beneficial to consumer health.

Fatty Acid Composition of Sesame (Sesamum indicum L.) Seeds in Relation to Yield and Soil Chemical Properties on Continuously Monocropped Upland Fields Converted from Paddy Fields

“…The results of fatty oleic, linoleic, and linolenic acids were on average in the ranges of 33.7-36.3%, 34.0-38.6%, and 1.38-2.19%, respectively. The oleic acids and linoleic acid contents were the two most dominant fatty acids in the sesame seeds that are consistent with the contents reported by other researchers [35][36][37]. The higher contents of oleic, linoleic, and linolenic acids from fields C and D could be a result of high soil exchangeable Mg contents from annual fertilizer application, including large quantity of dolomite, which was readily available for sesame plants.…”

Genome-Wide association Study Identifies Candidate Genes Related to Oleic acid content of Soybean Seed

“…Our study is consistent with the results of Hu Mingxiang [21]. Stearic acid was signi cantly positively correlated with oleic and arachidic acid, while it had an inverse association with both linoleic and linolenic acids [22]. In our study, the oleic acid content also is signi cantly positively correlated with linoleic acid (0.454).…”

Genome-wide association study identifies candidate genes related to oleic acid content in soybean seeds

“…The results also showed that the average oleic acid content in soybean germplasms varied greatly, and the oleic acid content in soybean grain was significantly different between regions. In Kurt's study, the correlation analysis clearly indicated a significant and negative correlation of oleic acid with linoleic acid (r = − 0.701, P < 0.0001) and stearic acid (r = − 0.218, P < 0.001), stearic acid was significantly positively correlated with oleic and arachidic acid, while stearic acid had an inverse association with both linoleic and linolenic acids [21]. In our study, the oleic acid content was also significantly positively correlated with linoleic acid (0.454).…”