Beschreibung:
<jats:p>Two soybean [<jats:italic>Glycine max</jats:italic> (L.) Merr.] germplasm lines have been identified for unique fatty acid content. The contents of oleic and linolenic acids in HOLL are controlled by <jats:italic>ol</jats:italic> and <jats:italic>fan</jats:italic> loci, respectively, and the very low content of linolenic acid in LOLL is controlled by <jats:italic>fan</jats:italic> and <jats:italic>fanx<jats:sup>a</jats:sup></jats:italic> loci combined. The <jats:italic>fan</jats:italic> locus is identical for both HOLL and LOLL. Therefore, if <jats:italic>ol</jats:italic> and <jats:italic>fanx<jats:sup>a</jats:sup></jats:italic> loci are independent, soybean germplasm could be developed with more unique and useful combinations of these fatty acids. The objectives of this study were to combine the loci of high oleic and low linolenic acids, and determine the effects of altered contents of oleic and linolenic acids on other fatty acids. HOLL was reciprocally crossed to LOLL. The data from F<jats:sub>2</jats:sub> seed indicated that the <jats:italic>ol</jats:italic> locus controlling high oleic acid was independently inherited from the <jats:italic>fanx<jats:sup>a</jats:sup></jats:italic> locus controlling low linolenic acid. Thus, the germplasm (DHL) with the high oleic acid trait from HOLL, and very low linolenic acid trait from LOLL, was easily developed. The increases in oleic acid due to <jats:italic>ol</jats:italic> was associated completely with changes in linoleic acids, indicating a pleiotropic effect of the <jats:italic>ol</jats:italic> locus. Decreases in linolenic acid due to <jats:italic>fan</jats:italic> and <jats:italic>fanx<jats:sup>a</jats:sup></jats:italic> were associated primarily with increases in linoleic acid. The development of DHL with increased contents of oleic acid and decreased contents of polyunsaturated fatty acids could open new markets for soybean oil.</jats:p>