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ARS Home » Research » Publications at this Location » Publication #79002
Title: FEASIBILITY OF DEVELOPING SOYBEAN CULTIVARS WITH HIGH PROTEIN AND LOW RAFFINOSE SACCHARIDE CONTENTS

Author
item Kuo, Tsung Min
item Rayford, Warren
item Nelsen, Terry

Submitted to: Journal of the American Oil Chemists' Society
Publication Type: Abstract Only
Publication Acceptance Date: 5/14/1997
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: High protein and low raffinose saccharide contents are two essential factors for good soybean quality. The objective of this study was to evaluate the relationship between soluble oligosaccharides and protein or oil in the seed and to determine the degree of difficulty in identifying good quality soybean cultivars. About 250-300 samples were randomly selected from each of 1992 and 1993 crops and were analyzed for protein and oil by NIR and for soluble oligosaccharides by HPLC. Statistical analyses were initially carried out on each year separately and then on the two years combined when the years were judged to be similar. Protein and oil were negatively correlated (r = -0.71), as expected. Oil and sucrose both had a similar negative correlation with protein and appeared to have a small positive correlation (r = 0.22) with one another. When the effect of protein was kept constant by partial correlation procedures, oil and sucrose were negatively correlated (partial r = -0.41). Raffinose saccharides (stachyose plus raffinose) had small positive correlations (r = 0.10 and 0.20) with oil and sucrose, respectively, and a weak negative correlation (r = -0.17) with the protein content. The results suggest that the compositional relationships of soybean cultivars are stable and that it is possible to develop high protein soybean cultivars containing low amounts of raffinose saccharides.