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United States Department of Agriculture

Agricultural Research Service

Research Project: CHARACTERIZATION, CONVERSION, AND IMPROVEMENT OF COMMON BEAN GERMPLASM

Location: Tropical Crops and Germplasm Research

Title: Registration of a small-red dry bean germplasm, TARS-LFR1, with multiple disease resistance and superior performance in low nitrogen soils

Authors
item Porch, Timothy
item Beaver, James -
item Abawi, G. -
item Jensen, C. -
item Smith, James

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: August 2, 2013
Publication Date: March 20, 2014
Citation: Porch Clay, T.G., Beaver, J.S., Abawi, G.A., Jensen, C.E., Smith, J.R. 2014. Registration of a small-red dry bean germplasm, TARS-LFR1, with multiple disease resistance and superior performance in low nitrogen soils. Journal of Plant Registrations. 8:177-182.

Interpretive Summary: Root rots, caused primarily by soil borne pathogens, are important constraints to common bean production. These diseases are increasingly critical under low-input and low fertility production zones, and under changing climatic conditions. The objective of this breeding effort was to develop root rot resistant germplasm with low fertility tolerance and with resistance to common bacterial blight, which often occur in conjunction with root rot. In addition, biological nitrogen fixation can result in increased yields under low fertility conditions and therefore could play an important role in low-input and organic production systems. TARS-RR1, PI ____, was developed by the United States Department of Agriculture-Agricultural Research Service, the University of Puerto Rico Agricultural Experiment Station, and Cornell University for resistance to root rot and bacterial blight, and for low fertility tolerance and efficient biological nitrogen fixation. The use of this improved germplasm by farmers in production zones affected by these stresses, or by breeding programs, can potentially increase yield and production of common bean.

Technical Abstract: Root rots, caused primarily by soil-borne fungi and Oomycetes, are important constraints to common bean production. These diseases are becoming a more serious problem under low-input and low fertility production zones with changing climatic conditions adding another layer of constraints. The objective of this breeding effort was to develop root rot resistant germplasm with low fertility tolerance and with resistance to common bacterial blight, caused by (Xanthomonas axonopodis pv. phaseoli (Smith) Dye), which often occur in conjunction with root rot. In addition, biological nitrogen fixation can result in increased yields under low fertility conditions and therefore could play an important role in low-input and organic production systems. TARS-RR1, PI ____, was developed through recurrent selection by the United States Department of Agriculture-Agricultural Research Service, the University of Puerto Rico Agricultural Experiment Station, and Cornell University for resistance to root rot and bacterial blight, for low fertility tolerance and efficient biological nitrogen fixation. This germplasm has shown consistently high yield potential under root rot and low fertility conditions. The use of this improved germplasm by farmers in production zones affected by these stresses, or by breeding programs, can potentially increase yield and production of common bean.

Last Modified: 7/22/2014
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