Genotype × Environment Interactions, Stability, and Agronomic Performance of Soybean with Altered Fatty Acid Profiles

Abstract

traits. Comparisons between reduced (≈40 g kg Ϫ1 ) and normal (≈110 g kg Ϫ1 ) palmitic acid families showed a There has been a major effort to produce soybean [Glycine max significant decrease in seed yield (Rebetzke et al., 1998; (L.) Merr.] lines with modified fatty acid profiles in order to improve quality and develop new uses for soybean oil. Utilization of the lines Ndzana et al., 1994) and total oil content (Ndzana et depends on their agronomic traits and stability of the fatty acid pro-al., 1994) in the reduced palmitic acid lines. Lundeen files in diverse environments. The objectives of this study were to et al. (1987) reported that there were significant differ-(i) evaluate the influence of years and locations on the fatty acid ences between the means of the elevated and normal composition of soybean genotypes with unique fatty acid profiles, (ii) stearic acid lines for maturity, lodging, plant height, determine which fatty acids and fatty acid profiles are the most stable, and protein and oil contents, however, it was of little and (iii) evaluate agronomic and seed quality traits of mutant soybean agronomic importance.lines. Genotypes were evaluated over three years (1996, 1997, and Other studies have shown that mutant alleles do not 1998) at four locations in Southern Ontario, Canada. Year effects have a significant effect on agronomic traits. Horejsi et had the largest impact on all fatty acid levels. Location effects were al. (1994) used backcrossing to develop reduced palmitic significant only for oleic and linolenic acids. Genotype ϫ year interaction effect was significant for all fatty acids whereas genotype ϫ acid families with seed yields similar to the recurrent location and genotype ϫ year ϫ location interaction effects were parent. Lundeen et al. (1987) and Hartmann et al. (1997) significant only for oleic, linoleic, and linolenic acids. Mutants withreported that there were lines with elevated stearic acid reduced or elevated palmitic, elevated oleic, or reduced linolenic acid contents that were not significantly different in seed concentrations exhibited average or higher stability than lines with yield than the highest yielding line in the population. normal levels of these fatty acids. Therefore, these lines may be suit-Increasing oleic acid content in soybean by recurrent able for growing in a wide range of environments. Maturity, plant selection was correlated with increases in seed size and height, lodging, seed size, and seed quality were significantly different a reduction in time to maturity, but seed yield, seed oil, between mutants and cultivars. Seed yield was significantly reduced and protein content seemed to be unaffected (Carver in mutants compared to cultivars. et al., 1986). Wilcox et al. (1993) and McClure (1999) both indicated that the fan allele was not associated with agronomic traits desired in commercial soybean T he end use of soybean [Glycine max (L.) Merr.]

Environmental Stability and Correlation of Soybean Seed Starch with Protein and Oil Contents

“…Earlier, we identified several loci controlling SSC in soybean (Dhungana et al 2017) and observed that majority of the QTL for SSC were found to be significantly influenced by the growing environment. Such effects have been observed for other complex traits like forage quality (Asekova et al 2016), isoflavone content (Primomo et al 2005), seed weight , seed protein (Panthee et al 2005), fatty acid composition, oil and protein contents (Rennie and Tanner 1989;Dornbos and Mullen 1992;Primomo et al 2002;Fehr et al 2003;Hou et al 2006;Oliva et al 2006;Dhakal et al 2013;Asekova et al 2014), and yield (Rao et al 2002;Shen et al 2006) in soybean.…”

Effect of Soybean Oil Fatty Acid Composition and Selenium Application on Biodiesel Properties

“…AG3906 and TN07-93RR in Knoxville, TN contained greater than 17 wt% saturated FAME, whereas AG3906 and TN07-93RR from the other two locations contained less than 16.5 wt% of these constituents. Studies conducted by Primomo et al [29] showed different factors affect different fatty acid profiles. Palmitic acid, a saturated fatty acid, were shown to be the most stable fatty acid in soybeans.…”

Agronomic Traits and Fatty Acid Composition of High‑Oleic Acid Cultivar Hosim

“…Many studies have shown that temperature fluctuations, seasonal variations, and different geographical locations might influence the fatty acid composition in soybean plants Primomo et al 2002;Bachlava et al 2008;La et al 2014). The yield of Hosim was observed to be stable across locations, and was not affected by increases in oleic acid concentrations.…”