The New Clubroot Resistance Locus Is Located on Chromosome A05 in Chinese Cabbage (Brassica rapa L.)
- Authors: Nguyen M.L.1,2, Monakhos G.F.3, Komakhin R.A.4, Monakhos S.G.1
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Affiliations:
- Timiryazev Russian State Agrarian University
- University of Education—The University of Danang
- Timofeev Breeding Station
- All-Russia Research Institute of Agricultural Biotechnology
- Issue: Vol 54, No 3 (2018)
- Pages: 296-304
- Section: Plant Genetics
- URL: https://journals.rcsi.science/1022-7954/article/view/188862
- DOI: https://doi.org/10.1134/S1022795418030080
- ID: 188862
Cite item
Abstract
Clubroot disease, which is caused by Plasmodiophora brassicae Wor., a soil-borne microorganism, is one of the most severe diseases of Brassica crops. Combining of two and more dominant resistance loci is an efficient method in breeding for clubroot resistance. Several clubroot resistance loci were earlier identified on linkage groups 1, 2, 3, 6, and 8 of Brassica rapa by different research groups. In our previous studies, we found a dominant monogenic resistance locus in an inbred line 20-2ccl of Chinese cabbage. In this study, a SCAR marker tau_cBrCR404 tightly linked to clubroot resistance locus (2.9 cM) was identified by a bulked segregant analysis (BSA) of a backcross population (BC1). The position of this clubroot resistance locus, named CrrA5, was determined on the linkage group 5 of B. rapa genome using genetic mapping. The efficiency of the tau_cBrCR404 marker in marker-assisted selection was validated using a collection of different Chinese cabbage accessions.
About the authors
M. L. Nguyen
Timiryazev Russian State Agrarian University; University of Education—The University of Danang
Email: smonakhos@gmail.com
Russian Federation, Moscow, 127550; Danang, 550000
G. F. Monakhos
Timofeev Breeding Station
Email: smonakhos@gmail.com
Russian Federation, Moscow, 127550
R. A. Komakhin
All-Russia Research Institute of Agricultural Biotechnology
Email: smonakhos@gmail.com
Russian Federation, Moscow, 127550
S. G. Monakhos
Timiryazev Russian State Agrarian University
Author for correspondence.
Email: smonakhos@gmail.com
Russian Federation, Moscow, 127550