ARS | Publication request: GENETIC CHARACTERIZATION OF DIFFERENTIAL REACTIONS AMONG HOST GROUP 3 COMMON BEAN CULTIVARS TO NL-3 K STRAIN OF BEAN COMMON MOSAIC NECROSIS VIRUS

Submitted to: National American Phytopathology Meetings
Publication Type: Abstract Only
Publication Acceptance Date: December 1, 2002
Publication Date: January 1, 2003
Citation: STRAUSBAUGH, C.A., MIKLAS, P.N., SINGH, S.P., MYERS, J.R., FORSTER, R.L. GENETIC CHARACTERIZATION OF DIFFERENTIAL REACTIONS AMONG HOST GROUP 3 COMMON BEAN CULTIVARS TO NL-3 K STRAIN OF BEAN COMMON MOSAIC NECROSIS VIRUS. NATIONAL AMERICAN PHYTOPATHOLOGY MEETINGS, 130:95. 2003.

Technical Abstract: A previously unrecognized recessive resistance gene (or allele) was identified in three Host Group (HG) 3 common bean cultivars Olathe, Victor, and UI 37, based on genetic analysis of plants from five populations screened with the NL-3 K strain of Bean common mosaic necrosis virus (BCMNV). The gene (or allele) was associated with resistance to leaf stunting and deformity and reduction in plant height. The gene (or allele) provides similar, but slightly better resistance than the bc-12 gene that is characteristic of HG 3 cultivars. Traditional HG 3 cultivars like Redlands Greenleaf B with bc-12 are susceptible to NL-3 K, whereas this newly identified gene (or allele) conditions resistance to NL-3 K. To gauge the full breeding value of this newly identified gene (or allele), allelism tests with existing genes namely bc-12, and further characterization of responses to all Bean common mosaic virus (BCMV) and BCMNV strains need to be conducted.