Collaborative Crop Research Program The McKnight Foundation
 
 

Nitrogen fixation, yield, and pest resistance of
African legumes

 
Using plant flavonoids as heritable traits to increase symbiotic nitrogen
fixation, yields, and pest resistance of indigenous African legumes

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Project information Topic: Food security
Investigators Topic: Monitoring and evaluation
Annual progress reports Topic: Neglected "orphan" crops
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Bambara groundnuts

Project information

»The problem
In the African diet, legumes are a source of high-quality protein and other nutrients. Unlike many other crops, they can adapt to nitrogen-deficient soils of parts of South Africa by interacting with certain soil microbes to meet their nitrogen requirements. Nevertheless, the process constrains the yields of African legumes. The legumes are also vulnerable to insect pests, diseases, and striga, a parasitic weed.

»The approach
This project works with two indigenous grain legumes, cowpea and Bambara groundnut, which are grown extensively throughout Africa. In particular, the project focuses on developing varieties that are efficient at nitrogen fixing and resistant to insects and striga. Certain plant signals may be important for the plant's ability to interact with beneficial soil microbes and to avoid insect pests and weeds. Molecules of the flavonoid pathway are known to be important in regulating both root nodulation and plant defense. Crop genotypes that fix nitrogen efficiently and that suppress pests and diseases will be identified, and the role of flavonoids in these traits will be determined to develop better cultivars and agronomic practices.

»The goal
To determine whether the legumes can be improved by targeting the flavonoid pathway.

Group mapping exercise

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Investigators

Principal Investigator
Dr. Felix Dakora, University of Cape Town, Rondebosch, South Africa

Associates
Dr. Michiel Adriaan Smit, University of Cape Town, Rondebosch, South Africa
Collaborators
Dr. James Ampofo, Selian Agricultural Research Institute, Arusha, Tanzania
Dr. Paul Gepts, University of California Davis (UC Davis), Irvine, California
Dr. Evelyne Lazaro, Sokoine University of Agriculture, Morogoro, Tanzania
Dr. Herman Loubser, ARC-Grain Crops Institute, South Africa
Dr. Jesse Naab, Savanna Agricultural Research Institute (SARI), Bawku, Ghana
Dr. Patrick Ndakidemi, Selian Agricultural Research Institute, Arusha, Tanzania
Dr. Donald Phillips, UC Davis , Irvine, California
Dr. Kallunde Sibuga, Sokoine University of Agriculture, Morogoro, Tanzania
Dr. Paul Tanzubil, SARI, Bawku, Ghana

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Annual progress reports

Click the links below for annual progress reports.

Year 1 (1/2003-12/2003)
Progress report

Year 2 (1/2005-12/2005)
Progress report

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Publications

None listed as of .

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Related Links

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