Table II.
Total sulfur amino acid contents of mature lupin seeds grown in sand/perlite at three levels of sulfur nutrition
| Sulfur Nutrition | Lupin Genotype | Met | Cys | Met/Cys Ratio |
|---|---|---|---|---|
| μmol g−1 dry wt | ||||
| High | C | 14.4 ± 0.5 | 33.0 ± 1.2 | 0.44 |
| Tg | 26.8 ± 0.9 | 31.0 ± 2.9 | 0.86 | |
| Medium | C | 13.9 ± 0.2 | 25.6 ± 0.0 | 0.54 |
| Tg | 26.8 ± 0.9 | 22.7 ± 1.8 | 1.18 | |
| Low | C | 9.7 ± 0.5 | 9.5 ± 1.8 | 1.02 |
| Tg | 12.7 ± 0.9 | 7.4 ± 1.2 | 1.72 | |
Separate samples of approximately 40 mature seeds from each of two plants per experimental group were milled to fine flour. Sulfur amino acids were measured after performic oxidation and acid hydrolysis. Figures are the mean ± sd of a single determination on each of the two samples. C, Control.