Seed physiology and technology
Seed respiratory patterns during germination
Metabolomics of seed germination
With support from the American Seed Research Foundation, the Bradford lab is working with Oliver Fiehn of the West Coast Metabolomics Center at UC Davis to analyze changes in the small metabolites that accompany germination. PhD student Dominique Ardura has sampled lettuce seeds at various times after imbibition and quantified several hundred metabolites. In addition, seeds were selected based on their respiratory patterns as revealed by the Q2 instrument (see above). This will enable direct comparisons between the respiration (oxygen consumption) rates of seeds and the respiratory pathways that are utilized in the early stages of seed activation following imbibition.
Stratification requirement for seed dormancy alleviation of a wetland weed
Seed Systems project develops novel seed drying and storage strategies for humid regions
Kent Bradford and collaborators in Thailand, Bangladesh, Nepal, India and Kenya are conducting a 3-year project to improve and disseminate a novel method for seed drying using desiccant “drying beads.” The project, supported by $1 million from the US Agency for International Development (USAID) and the Horticulture Innovation Laboratory based at UC Davis, is demonstrating how the drying beads can be used to dry seeds to safe storage moisture contents even in rainy and high humidity climates. Drying and storage in hermetic containers also protect the seeds from damage due to molds, insects and rodents. The drying bead technology is scalable from individual farmers and local seed cooperatives to large industrial seed drying and storage facilities. The project has also developed simple methods for determining seed moisture contents and is promoting a “dry chain” concept for drying, packaging, transport and storage of seeds and dried commodities. For more information, see www.dryingbeads.org.