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Inheritance of Reduced Palmitic Acid Content in Seed Oil of Soybean
Author(s) -
Fehr W. R.,
Welke G. A.,
Hammond E. G.,
Duvick D. N.,
Cianzio S. R.
Publication year - 1991
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1991.0011183x003100010022x
Subject(s) - palmitic acid , biology , cultivar , fatty acid , saturated fatty acid , allele , soybean oil , food science , biochemistry , botany , gene
Reduction of the palmitic acid content of soybean [ Glycine max (L.) Merr.] would lower the total saturated fatty acid content of the seed oil. A mutant line, A1937NMU‐173, with ≈30 g kg ‐1 less palmitic acid than commercial soybean cultivars was obtained by the treatment of seeds of the cultivar A1937 with N ‐nitroso‐ N ‐methyl‐urea (NMU). To determine the genetic control of the reduced palmitic acid, A1937NMU‐173 was crossed reciprocally to C1726, a line with the fap1 allele that lowers the palmitic acid content. No maternal effect for palmitic acid was observed from the analysis of F 1 seeds from reciprocal crosses. The segregation observed from the analysis of individual F 2 seeds for palmitic acid content satisfactorily fit a ratio of 9 greater than either parent: 2 within the range of the parents: 5 less tahn either parent. The F 2 segregation ratio and the segregation of F 3 seeds from F 2 plants indicated that A1937NMU‐173 and C1726 have different alleles at two independent loci. The allele in A1937NMU‐137 has temporarily been designed fapx . the genotype fap1 fap1 fapx fapx has ≈ g kg ‐1 of palmitic acid, which is the lowest content known in soybean.