caa a22 4500 475796209 CHVBK 20180406123725.0 cr unu---uuuuu 170329e20000601xx s 000 0 eng 10.1007/s001220051421 doi (NATIONALLICENCE)springer-10.1007/s001220051421 Mapping quantitative trait loci (QTLs) for resistance to Cercospora leaf spot disease (Cercospora beticola Sacc.) in sugar beet (Beta vulgaris L.) [Elektronische Daten] [A. Setiawan, G. Koch, S. R. Barnes, C. Jung] Abstract : The breeding of sugar beet varieties that combine resistance to Cercospora and high yield under non-diseased conditions is a major challenge to the breeder. The understanding of the quantitative trait loci (QTLs) contributing to Cercospora resistance offers one route to solving this problem. A QTL analysis of Cercospora resistance in sugar beet was carried out using a linkage map based on AFLP and RFLP markers. Two different screening methods for Cercospora resistance (a field test at Copparo, Italy, under natural infection, and a newly-developed leaf disc test) were used to estimate the level of Cercospora resistance; the correlation between scores from the field (at 162 days after sowing) and the leaf disc test was significant. QTL analysis was based on F2 and F3 (half-sib family) generations derived from crosses between diploid single plants of 93164P (resistant to Cercospora leaf spot disease) and 95098P (susceptible). Four QTLs associated with Cercospora resistance (based on Lsmean data of the leaf disc test) on chromosomes III, IV, VII and IX were revealed using Composite interval mapping. To produce populations segregating for leaf spot resistance as a single Mendelian factor, we selected for plants heterozygous for only one of the QTLs (on chromosome IV or IX) but homozygous for the others. Springer-Verlag Berlin Heidelberg, 2000 Key words Beta vulgaris nationallicence Cercospora beticola nationallicence AFLP nationallicence QTL nationallicence Setiawan A. Institute of Crop Science and Plant Breeding, Christian-Albrechts-University Kiel, Olshausenstr. 40, D-24118 Kiel, Germany e-mail: cjung@plantbreeding.uni-kiel.de, DE aut Koch G. Institute of Crop Science and Plant Breeding, Christian-Albrechts-University Kiel, Olshausenstr. 40, D-24118 Kiel, Germany e-mail: cjung@plantbreeding.uni-kiel.de, DE aut Barnes S. R. SES Europe, Industriepark 15, 3300 Tienen, Belgium, BE aut Jung C. Institute of Crop Science and Plant Breeding, Christian-Albrechts-University Kiel, Olshausenstr. 40, D-24118 Kiel, Germany e-mail: cjung@plantbreeding.uni-kiel.de, DE aut https://doi.org/10.1007/s001220051421 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001220051421 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Setiawan A. Institute of Crop Science and Plant Breeding, Christian-Albrechts-University Kiel, Olshausenstr. 40, D-24118 Kiel, Germany e-mail: cjung@plantbreeding.uni-kiel.de, DE aut NATIONALLICENCE 700 1- Koch G. Institute of Crop Science and Plant Breeding, Christian-Albrechts-University Kiel, Olshausenstr. 40, D-24118 Kiel, Germany e-mail: cjung@plantbreeding.uni-kiel.de, DE aut NATIONALLICENCE 700 1- Barnes S. R. SES Europe, Industriepark 15, 3300 Tienen, Belgium, BE aut NATIONALLICENCE 700 1- Jung C. Institute of Crop Science and Plant Breeding, Christian-Albrechts-University Kiel, Olshausenstr. 40, D-24118 Kiel, Germany e-mail: cjung@plantbreeding.uni-kiel.de, DE aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer