caa a22 4500 445323299 CHVBK 20180317142711.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10681-010-0299-4 doi (NATIONALLICENCE)springer-10.1007/s10681-010-0299-4 Inheritance of Russian wheat aphid resistance from tetraploid wheat accessions during transfer to hexaploid wheat [Elektronische Daten] [Benjamin Beyer, Scott Haley, Nora Lapitan, Junhua Peng, Frank Peairs] Identification of new sources of resistance to Russian wheat aphid (RWA) (Diuraphis noxia (Kurdjumov) in wheat (Triticum aestivum L.) has become very important with the identification of several new biotypes since 2003. Our objective was to characterize inheritance and expression of resistance to RWA biotype 2 from three tetraploid wheat landraces (Triticum turgidum L. subsp. dicoccon) during transfer to hexaploid wheat. Resistant tetraploid accessions PI 624903, PI 624904, and PI 624908 were crossed to the susceptible hexaploid cultivars ‘Len' and ‘Coteau'. Resistant F1 progeny were advanced to the F2:3 by self-pollination and to the BC1F2 and BC2F1 by backcrossing. Leaf rolling and chlorosis were recorded in standard seedling screening tests on F1 and F2:3 individuals while the F2, BC1F1, BC1F2, and BC2F1 were scored as resistant or susceptible. Segregation in the BC1F1 and BC2F1 fit a 1:1 resistant:susceptible ratio, indicative of control by a single dominant gene. Segregation for resistance in the F2 did not fit 3:1, 13:3, or 15:1 ratios for any of the resistant accessions. Expression of resistance in homogeneous resistant F2:3 lines was greater than susceptible checks, similar to the resistant tetraploid accessions, and less than a line carrying the Dn7 resistance gene. Resistance derived from these tetraploid accessions will be useful to broaden the base of RWA resistance available for use in wheat breeding. Springer Science+Business Media B.V., 2010 Triticum aestivum L nationallicence Triticum turgidum L nationallicence Russian wheat aphid nationallicence Diuraphis noxia (Kurdjumov) nationallicence Host plant resistance nationallicence Beyer Benjamin Soil and Crop Sciences Department, Colorado State University, 80523, Fort Collins, CO, USA aut Haley Scott Soil and Crop Sciences Department, Colorado State University, 80523, Fort Collins, CO, USA aut Lapitan Nora Soil and Crop Sciences Department, Colorado State University, 80523, Fort Collins, CO, USA aut Peng Junhua Wuhan Botanical Garden/Institute, Chinese Academy of Sciences, Moshan, 430074, Wuhan, Hubei, China aut Peairs Frank Bioagricultural Sciences and Pest Management Department, Colorado State University, 80523, Fort Collins, CO, USA aut Euphytica Springer Netherlands 179/2(2011-05-01), 247-255 0014-2336 179:2<247 2011 179 10681 https://doi.org/10.1007/s10681-010-0299-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-010-0299-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Beyer Benjamin Soil and Crop Sciences Department, Colorado State University, 80523, Fort Collins, CO, USA aut NATIONALLICENCE 700 1- Haley Scott Soil and Crop Sciences Department, Colorado State University, 80523, Fort Collins, CO, USA aut NATIONALLICENCE 700 1- Lapitan Nora Soil and Crop Sciences Department, Colorado State University, 80523, Fort Collins, CO, USA aut NATIONALLICENCE 700 1- Peng Junhua Wuhan Botanical Garden/Institute, Chinese Academy of Sciences, Moshan, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Peairs Frank Bioagricultural Sciences and Pest Management Department, Colorado State University, 80523, Fort Collins, CO, USA aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 179/2(2011-05-01), 247-255 0014-2336 179:2<247 2011 179 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer