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United States Department of Agriculture

Agricultural Research Service

Research Project: Breeding Locally-Adapted Pulse Crops for Enhanced Yield and Seed Qualities

Location: Tropical Crops and Germplasm Research

2013 Annual Report


1a.Objectives (from AD-416):
To develop a diversity panel (ADP) of about 400 Andean common bean germplasms specifically suited to African countries for evaluation of desired traits that will be made available to the broader common bean improvement community; and to test this panel and additional biparental populations for abiotic and biotic stress tolerance traits.


1b.Approach (from AD-416):
A panel of diverse common bean germplasm specific to the Andean lineage will be developed. The panel will serve as a tool for studying important biotic and abiotic traits in Feed the Future (FTF) countries (Mozambique, Rwanda, Tanzania, Uganda), while not excluding others (Angola). Characterization of specific traits of importance in FTF countries will be carried out on the ADP population as well as on bi-parental populations.


3.Progress Report:

The objectives of this collaborative research corresponded with Objective 1: Identify and map important abiotic (heat and drought) and biotic traits for disease and pest resistance in common bean, and develop useful molecular markers that will help accelerate the breeding process and Objective 2: Develop and release common bean germplasm with higher levels of abiotic stress tolerance, and with multiple resistance, including disease and insect resistance in important U.S. market classes, of the parent project.

The cooperator has conducted evaluations of the Andean Diversity Panel for leaf pubescence and biological nitrogen fixation, and for response to bruchids and ashy stem blight. The collaborator is evaluating the response of tepary germplasm and breeding lines to Bradyrhizobia for improved biological nitrogen fixation. In addition, the cooperator is participating in breeding Andean germplasm for increased productivity in Sub-Saharan Africa. Finally, the collaborator is coordinating the training of a Masters level student in areas related to biological nitrogen fixation.


Last Modified: 8/19/2014
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