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- W2384702801 abstract "The 1BL/1RS translocation has been widely used by wheat breeders to enhance agronomic performance and disease resistance.The objective of this study was to analyze the genetic effect of 1BL/1RS translocation on yield traits and powdery mildew resistance in common wheat.A total of 240 F_(5:6) lines from the cross PH82-2/Neixiang 188 were planted with a latinized alpha-lattice design in Anyang and Jiaozuo of Henan Province and Tai'an of Shandong Province,respectively. Grain yield,thousand-grain weight,grain number per spike,spike number,plant height,heading date,and powdery mildew severity were investigated in field trials.Fourteen SSR and storage protein markers on chromosome 1BL/1RS were used to analyze the population and construct a linkage map.QTL analysis was conducted with the software QTL Cartographer 2.5.A significantly higher thousand-grain weight,reduced grain number per spike and plant height,and lower powdery mildew severity in 1BL/1RS translocation lines were observed,whereas no significant difference was observed in grain yield,spike number and heading date between 1BL/1RS and 1B/1B lines.With the method of composite interval mapping(CIM),the putative QTLs of plant height and powdery mildew resistance were detected on 1BL/1RS translocation segment across three environments.A QTL in the interval of HVM20Sec-1 was detected for reducing plant height on 1BL/1RS translocation segment explaining 4.28% of the phenotypic variation.Two QTLs for powdery mildew resistance were found on 1BL/1RS translocation segment(HVM20Sec-1) and 1BL(Xgwm24Xwmc320),accounting for 4.81% and(4.66%) of phenotypic variance,respectively.The QTL for powdery mildew resistance on 1BL/1RS translocation segment may be the residual effect of Pm8.From breeding point of view,1BL/1RS translocations are generally not recommended in yield and quality wheat breeding at present,due to its inconsistent contribution to yield,lost resistance to disease and negative effect on quality." @default.
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- W2384702801 date "2006-01-01" @default.
- W2384702801 modified "2023-09-25" @default.
- W2384702801 title "Effect of 1BL/1RS Translocation on Yield Traits and Powdery Mildew Resistance in Common Wheat and QTL Analysis" @default.
- W2384702801 hasPublicationYear "2006" @default.
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