caa a22 4500 445323671 CHVBK 20180317142712.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10681-010-0252-6 doi (NATIONALLICENCE)springer-10.1007/s10681-010-0252-6 Advanced-backcross QTL analysis in spring barley: IV. Localization of QTL×nitrogen interaction effects for yield-related traits [Elektronische Daten] [Bernhard Saal, Maria von Korff, Jens Léon, Klaus Pillen] The advanced backcross quantitative trait locus (AB-QTL) analysis has proven its usefulness to identify and localize favourable alleles from exotic germplasm and to transfer those alleles into elite varieties. In a balanced design with up to six environments and two nitrogen fertilization (N treatment) levels, a 4-factorial mixed model analysis of variance (ANOVA) was used to identify QTL main effects, QTL×environment interaction effects and QTL×N treatment interaction effects in the spring barley BC2DH population S42. The yield-related traits studied were number of ears per m2, days until heading, plant height, thousand grain weight (TGW) and grain yield. In total, 82 QTLs were detected for all traits. This finding was compared to a previous QTL study of the same population S42, where the current field data was reduced to one half through restriction of the analysis to the standard N treatment level (von Korff et al., Theor Appl Genet 112: 1221-1231, 2006). These authors located 54 QTLs for the same traits by applying a 3-factorial mixed model similar to the current model but excluding the factor N treatment. We found that QTL×environment interaction, alone or in combination, accounted for 24 of the newly uncovered QTLs, whereas QTL×N treatment interaction was of lesser importance with six new cases in total. A valuable QTL interacting with N treatment has been identified on chromosome 7H where lines carrying the wild barley allele were superior in number of ears per m2 in either N treatment. We conclude that in population S42 the extension of the phenotype data set and the inclusion of N treatment into the mixed model increased the power of QTL detection by providing an additional replication rather than by revealing specific N treatment QTLs. Springer Science+Business Media B.V., 2010 AB-QTL analysis nationallicence Hordeum vulgare ssp. spontaneum nationallicence Yield-related traits nationallicence Nitrogen×N interaction nationallicence 4-Factorial mixed model ANOVA nationallicence Saal Bernhard Institute of Agricultural and Nutritional Sciences, Chair of Plant Breeding, Martin-Luther-University Halle-Wittenberg, Betty-Heimann-Str. 3, 06120, Halle, Germany aut von Korff Maria Department of Plant Developmental Biology, Max-Planck-Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829, Cologne, Germany aut Léon Jens Institute of Crop Science and Resource Conservation, Chair of Plant Breeding, University of Bonn, Katzenburgweg 5, 53115, Bonn, Germany aut Pillen Klaus Institute of Agricultural and Nutritional Sciences, Chair of Plant Breeding, Martin-Luther-University Halle-Wittenberg, Betty-Heimann-Str. 3, 06120, Halle, Germany aut Euphytica Springer Netherlands 177/2(2011-01-01), 223-239 0014-2336 177:2<223 2011 177 10681 https://doi.org/10.1007/s10681-010-0252-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-010-0252-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Saal Bernhard Institute of Agricultural and Nutritional Sciences, Chair of Plant Breeding, Martin-Luther-University Halle-Wittenberg, Betty-Heimann-Str. 3, 06120, Halle, Germany aut NATIONALLICENCE 700 1- von Korff Maria Department of Plant Developmental Biology, Max-Planck-Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829, Cologne, Germany aut NATIONALLICENCE 700 1- Léon Jens Institute of Crop Science and Resource Conservation, Chair of Plant Breeding, University of Bonn, Katzenburgweg 5, 53115, Bonn, Germany aut NATIONALLICENCE 700 1- Pillen Klaus Institute of Agricultural and Nutritional Sciences, Chair of Plant Breeding, Martin-Luther-University Halle-Wittenberg, Betty-Heimann-Str. 3, 06120, Halle, Germany aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 177/2(2011-01-01), 223-239 0014-2336 177:2<223 2011 177 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer