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The Use of Molecular Markers to Certify Clubroot Resistant Cultivars of Chinese Cabbage
Zhong Yun Piao,Su Ryun Choi,Young Mi Lee,Hong Gi Kim,Yong Pyo Lim 한국원예학회 2007 Horticulture, Environment, and Biotechnology Vol.48 No.3
Chinese cabbage cultivated in most area of Korea is subjected to the most serious clubroot disease caused by Plasmodiophora brassicae Wor. A number of clubroot resistant (CR) cultivars were released or in development. We have previously tagged CR locus (CRb) within 3 cM flanked by two co-dominant markers (TCR01 and TCR05) and one dominant marker (TCR09). Thirty-seven CR cultivars and ten non-CR cultivars were collected to study the utility of these DNA markers. In addition, markers (BRMS096, BRMS088, and OPC11-2S) linked to Crr1, Crr2, and Crr3, respectively, were evaluated. Of the surveyed CR cultivars, 18 carried marker fragment TCR01₂?? and TCR05₂?? linked to CRb in coupling. Evaluation of these cultivars to race 4 of clubroot revealed that all of them conferred resistance. Other CR cultivars absent of TCR01₂?? and TCR05₂?? were either resistant or susceptible. Only OPC11-2S linked to Crr3 can explain the two CR cultivars showing susceptible, while others cannot. Analysis of European Clubroot Differential set 01 to 04 indicate that marker fragment TCR05₂?? with the CRb locus, possibly also TCR01₂??, was introgressed from CR turnip into partial CR cultivars of Chinese cabbage. The usefulness of these markers in marker-assisted selection was also discussed.
SSR and SCAR mapping of a multiple-allele male-sterile gene in Chinese cabbage (Brassica rapa L.)
Feng, Hui,Wei, Peng,Piao, Zhong-Yun,Liu, Zhi-Yong,Li, Cheng-Yu,Wang, Yu-Gang,Ji, Rui-Qin,Ji, Shu-Juan,Zou, Ting,Choi, Su-Ryun,Lim, Yong-Pyo Springer-Verlag 2009 TAG. Theoretical and applied genetics. Theoretisch Vol.119 No.2
Genomic distribution of simple sequence repeats in Brassica rapa
Hong, Chang Pyo,Piao, Zhong Yun,Kang, Tae Wook,Batley, Jacqueline,Yang, Tae Jin,Hur, Yoon Kang,Bhak, Jong,Park, Beom Seok,Edwards, David,Lim, Yong Pyo Korean Society for Molecular and Cellular Biology 2007 Molecules and cells Vol.23 No.3
Genetic Detection of Clubroot Resistance Loci in a New Population of Brassica rapa
Wenxing Pang,Shan Liang,Xiaonan Li,Pengpeng Li,Sha Yu,임용표,Zhong Yun Piao 한국원예학회 2014 Horticulture, Environment, and Biotechnology Vol.55 No.6
Clubroot is one of the most serious diseases affecting Brassica crop production worldwide. In order toidentify the location of clubroot resistance genes in Chinese cabbage, we constructed a linkage map for an F2 populationderived from a cross between a resistant turnip inbred line, ‘Siloga’ (B. rapa ssp. rapifera), and a susceptible Chinesecabbage inbred line, ‘BJN3’ (B. rapa ssp. pekinensis). The newly developed genetic map included 207 markers andcovered 1151.7 cM. In combination with clubroot resistance tests from the field, the data allowed us to identify threequantitative trait loci of clubroot resistance, using a composite interval mapping method. Clubroot resistance genesQS_B1.1, QS_B3.1, and QS_B8.1 were located on chromosomes A1, A3, and A8, respectively, of B. rapa. Theircontribution rates were 8.18%, 70.55%, and 7.28%, respectively. QS_B1.1 was a novel locus of clubroot resistance,independent of any published clubroot-resistance loci. QS_B3.1 was first detected in ‘Siloga,’ mapped to the previousCRb and CRa region, whereas QS_B8.1 was closely linked to Crr1b. Epistatic interactions with additive effects weredetected between QS_B3.1 and QS_B8.1.