As part of an ongoing project funded by the United Soybean Board, we have identified soybean genotypes that are delayed in wilting when compared with most other genotypes. To determine wilting, we rate plots on a visual scale from 0 (no wilting) to 100% (completely wilted with dying leaves). Ratings for wilting are reproducible from year to year, they are heritable, and the delayed wilting trait increases yield under drought conditions. We have also been able to tag some of the genes for delayed wilting, but our ability to use molecular markers efficiently is limited by the number of soybean lines that we can rate for wilting.
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#water quality & management