Effect of Mid-Season Moisture Stress on Fatty Acid Composition of Groundnut (Arachis hypogaea L.) Genotypes

Abstract

A field experiment was conducted at Regional Agricultural Research Station, Tirupati, Acharya N.G. Ranga Agricultural University during rabi, 2022 and 2023 to study the effect of mid-season moisture stress on fatty acid composition of groundnut genotypes. The experiment was carried out in randomized block design (RBD) with factorial concept with two main treatments i.e., control and mid-season moisture stress (40-80 DAS) and 12 sub treatments i.e., two check varieties and ten contrasting groundnut genotypes sown in three replications. The study revealed that during rabi, 2022 and 2023 the genotype, TCGS 2326 recorded highest palmitic acid (12.67 and 12.99%) which was on par with K9 (11.96%) and TCGS 1792 (12.56%) during 2022 and 2023. Whereas, lowest palmitic acid was recorded by TCGS 2024 (9.51 and 10.00%). During rabi, 2022 highest stearic acid was recorded by TCGS 1792 (3.19%) which was at par with TCGS 2326 (3.14%) and during 2023, TCGS 2326 (3.34%) recorded highest stearic acid which was on par with TCGS 1792 (3.16%) whereas, lowest stearic acid was recorded by TCGS 2024 (2.47%) and TCGS 1785 (2.47%) during 2022 and 2023. Highest oleic acid was recorded by TCGS 1792 (53.02 and 52.67%) which was on par with TCGS 2333 (52.63 and 41.80%) and lowest oleic acid was recorded by TCGS 1785 (40.05 and 40.01%). Highest linoleic acid was recorded by TCGS 2024 (37.89%) and K6 (37.12%) whereas, lowest linoleic acid composition was recorded by TCGS 1792 (20.17%) and TCGS 2326 (20.13%) during 2022 and 2023.