New Mutations in a Delta‐9‐Stearoyl‐Acyl Carrier Protein Desaturase Gene Associated with Enhanced Stearic Acid Levels in Soybean Seed

• DOI: 10.2135/cropsci2011.08.0411
• Publication Date: 2012-06-12T15:47:29Z
• Authors: Jeffrey G. Boersma; Jason D. Gillman; Kristin D. Bilyeu; Gary R. Ablett; Christopher Grainger; Istvan Rajcan
• Keywords: Stearic acid; Soybean oil

ABSTRACT Soybean [ Glycine max (L.) Merr.] oil from conventional cultivars typically contains ~30 g kg −1 stearic acid of the total seed oil. Increased concentration in soybeans is desirable for certain food and industrial uses. To date a small number mutants have been developed with increased levels three to six times that normal. At least two such lines were found possess separate mutations delta‐9‐stearoyl‐acyl carrier protein desaturase C gene ( SACPD‐C ) dramatically concentration. We now report additional independent this increase soybean germplasm line RG7 ~116 . An F 5 recombinant inbred (RIL) population was determine relationship between mutation Transgressive segregation progeny cross mutant RG2 (low palmitic acid) further increases almost 180 , suggesting presence yet another having significant effect on accumulation. also discerned an independent, presumably allelic, within RG8, which has about 106 acid. Molecular markers diagnostic RG8 developed, enabling rapid selection these development content