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Field Performance of High Oleic Soybeans with Mutant FAD2‐1A and FAD2‐1B Genes in Tennessee
Author(s) -
Darr Lauren,
Cunicelli Mia,
Bhandari Hem,
Bilyeu Kristin,
Chen Feng,
Hewezi Tarek,
Li Zenglu,
Sams Carl,
Pantalone Vince
Publication year - 2020
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1002/aocs.12306
Subject(s) - oleic acid , mutant , genotype , biology , soybean oil , population , glycine , gene , allele , food science , fatty acid desaturase , fatty acid , horticulture , chemistry , biochemistry , polyunsaturated fatty acid , amino acid , demography , sociology
Soybean [ Glycine max (L.) Merr.] oil with high oleic acid (>75%) has increased oxidative stability and health benefits that are valuable for food, fuel, and industrial products. It has been determined that two naturally occurring mutations in genes FAD2‐1A and FAD2‐1B can combine to produce high oleic soybeans. The objective of this study was to test the effect of these mutant alleles on seed yield and oil and protein concentration. Molecular markers assisted in the creation of a population of 48 BC 3 F 2:4 lines (93.75% expected genome commonality). Each line was classified into one of four genotypic groups where both FAD2‐1A and FAD2‐1B genes were either homozygous wild type or mutant, respectively. Twelve lines for each genotypic group were evaluated in three replications at six locations across Tennessee. There was no seed yield difference between the high oleic genotypic group and the other groups ( P < 0.05). On the other hand, there were differences in fatty acid profiles and oil and protein concentrations. In combination, the mutant FAD2‐1A and FAD2‐1B alleles produced a mean of 803.1 g kg −1 oleic acid. This is, on average, approximately 500 g kg −1 more oleic acid compared to soybean lines with only one mutant FAD2 ‐1 allele. The high oleic double mutant group had more total oil (228.0 g kg −1 ) and protein (401.0 g kg −1 ) compared to all other genotypic groups ( P < 0.05). Overall, this specific combination of mutant FAD2‐1A and FAD2‐1B alleles appears to generate conventional high oleic soybeans without a yield drag.