Project Number: 5354-21220-018-05
Start Date: Oct 01, 2013
End Date: Sep 22, 2014
Phenomics: Novel phenotyping platforms will be used to characterize bean germplasm for resistance traits, identify new sources of tolerance, and guide recurrent selection programs. For drought tolerance, we will focus on root traits that improve water uptake from drying soil, grain filling under stress and optimize phenology for drought avoidance. For heat tolerance, we will emphasize stress affecting reproductive processes. Genomics: Next generation genomics tools will be deployed to identify major genes conferring greater drought and heat tolerance. The tools include the recently completed sequence of the bean genome, highly saturated marker chips, genotype-by-sequencing methods, and association mapping of specific tolerance traits identified by the phenomics module. Breeding: A coordinated network of Bean Abiotic Stress Evaluation (BASE) trials will be initiated at sites in the USA, Mozambique, Malawi, Zambia, Colombia and Honduras to screen Andean and Mesoamerican bean germplasm. Heat and drought tolerance of Tepary bean (Phaseolus acutifolius) will be leveraged through interspecific crosses. Germplasm will include supportive traits of root rot resistance, tolerance to low soil P, excellent BNF, and high seed Fe content. The breeding strategy will focus on specific tolerance traits and markers for them.