title: Environmental Stability of Seed Carbohydrate Profiles in Soybeans Containing Different Alleles of the Raffinose Synthase 2 (RS2) Gene.
abstract: Soybean [Glycine max (L.) Merr.] is important for the high protein meal used for livestock feed formulations. Carbohydrates contribute positively or negatively to the potential metabolizable energy in soybean meal. The positive carbohydrate present in soybean meal consists primarily of sucrose, whereas the negative carbohydrate components are the raffinose family of oligosaccharides (RFOs), raffinose and stachyose. Increasing sucrose and decreasing raffinose and stachyose are critical targets to improve soybean. In three recently characterized lines, variant alleles of the soybean raffinose synthase 2 (RS2) gene were associated with increased sucrose and decreased RFOs. The objective of this research was to compare the environmental stability of seed carbohydrates in soybean lines containing wild-type or variant alleles of RS2 utilizing a field location study and a date of planting study. The results define the carbohydrate variation in distinct regional and temporal environments using soybean lines with different alleles of the RS2 gene.
authors.affiliation: Plant Genetics Research Unit, Agricultural Research Service, U.S. Department of Agriculture , 110 Waters Hall, Columbia, Missouri 65211, United States.
authors.forename: Kristin D
authors.initials: KD
authors.lastname: Bilyeu
authors.affiliation: Division of Plant Sciences, University of Missouri , Columbia, Missouri 65211, United States.
authors.forename: William J
authors.initials: WJ
authors.lastname: Wiebold
mesh_terms: D000483:Alleles; D002241:Carbohydrates / Q000737:chemistry*; D004777:Environment; D005700:Galactosyltransferases / Q000235:genetics* / Q000378:metabolism; D005838:Genotype; D012639:Seeds / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D030262:Soybean Proteins / Q000235:genetics / Q000378:metabolism*; D013025:Glycine max / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism
chemical_list: D002241:Carbohydrates; D030262:Soybean Proteins; D005700:Galactosyltransferases; C468749:raffinose synthase
keywords: [Glycine max (L.) Merr]; carbohydrate; environment; soybean; stachyose; sucrose