Oil Content, Oil Yield and Fatty Acid Profile of Groundnut Germplasm in Mediterranean Climates

Abstract

A high amount of good‐quality vegetable oil in seeds has an overwhelming contribution to the groundnut (Arachis hypogaea L.) cultivation throughout the world. In order to take into account great variation in oil characteristics in Arachis subspecies and botanical varieties, 256 groundnut genotypes including ICRISAT's mini core collection were investigated. Significant variability in oil content (31.7–57.0%) was detected among groundnut genotypes. Oil yield varied from 9.5 to 179.3 kg da−1 with the average being 67.7 kg da−1. Significant genotypic differences were also observed for all the fatty acids studied. Oleic and linoleic acids accounted for the major fraction with mean values of 45.3 and 32.1% in the ranges of 35.3–60.9% and 16.1–43.6%, respectively. Significant negative correlation was observed between oleic and linoleic acid. In the present investigation, desirable values were obtained for oil traits which would be useful to develop nutritional and health‐beneficial cultivars.

Influences of genotype and location interactions on oil, fatty acids and agronomical properties of groundnuts

“…The plant material used in this study was selected from a diverse groundnut collection consisting of 256 genotypes. The quantitative and qualitative properties of the collection were detailed in the previous investigations of Yol et al, (2015Yol et al, ( , 2016Yol et al, ( , 2017Yol et al, ( , 2018. Nine groundnut genotypes were selected from these 256 genotypes after three years of field studies.…”

High-resolution mapping of a major and consensus quantitative trait locus for oil content to a ~ 0.8-Mb region on chromosome A08 in peanut (Arachis hypogaea L.)

“…However, the domestic production of peanut hardly meets the increasing demands for peanut oil. Due to the large variation of oil content in the peanut germplasm (Yol et al 2017), it is highly feasible to develop cultivars with high oil content and yield to enhance oil productivity. In addition, an increase of 1% in the oil content in peanuts could result in a 7% increase in economic benefit for oil processing (Shasidhar et al 2017).…”

Genomic and Transcriptomic Analysis Identified Gene Clusters and Candidate Genes for Oil Content in Peanut (Arachis hypogaea L.)

“…Oil crops are the major source of edible oils which are essential part of human food chain and their health. Peanut, also known as groundnut ( Arachis hypogaea L.; AABB, 2n = 4× = 40), is one of the most important oil crops worldwide, with an average oil content of ~ 50% w / w (Barrientos-Priego et al 2002 ; Yol et al 2017 ). Peanut also has been recognized as a functional food due to a well-balanced fatty acid profile and high levels of specific antioxidants and mono- and polyunsaturated fatty acids (Akhtar et al 2013 ).…”

“…Peanut also has been recognized as a functional food due to a well-balanced fatty acid profile and high levels of specific antioxidants and mono- and polyunsaturated fatty acids (Akhtar et al 2013 ). Despite the typically high levels of oil content in currently grown peanut varieties, still there is significant variation among germplasm, i.e., ranging from 31.7 to 57.0% w / w (Yol et al 2017 ) which can be used for further enhancing the oil content in newly developed varieties. Because of the above reasons, several breeding programs across the world, including in China, are engaged in developing peanut cultivars with high oil content (Barrientos-Priego et al 2002 ; Chen et al 2016 ).…”