caa a22 4500 445323620 CHVBK 20180317142712.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10681-010-0257-1 doi (NATIONALLICENCE)springer-10.1007/s10681-010-0257-1 Realized gains from selection for spring wheat grain yield are different in conventional and organically managed systems [Elektronische Daten] [Todd Reid, Rong-Cai Yang, Donald Salmon, Alireza Navabi, D. Spaner] Breeding spring wheat (Triticum aestivum L.) specifically for organic production has been suggested by producers and researchers alike. To investigate the effects of management systems on selected spring wheat breeding line performance in multi-location tests in the northern Great Plains, we used a randomly derived population of 79 F6-derived recombinant inbred lines (RILs) from a cross between the Canadian hard red spring wheat cultivar AC Barrie and the CIMMYT derived cultivar Attila. The population, including the parents, was grown on conventionally and organically managed land in 12 environments over 3years. Direct selection in each management system (10% selection intensity based on grain yield) resulted in three lines being retained in each management system, over the multi-location testing. Gains from 10% selection for grain yield in a ‘selection' year were 3.4 times greater in conventional multi-site yield trials than in organically managed trials. Two lines (BA 05 and BA 36) ranked in the top 10% of both the conventional and organic selection trial of 2005, remained ranked 2nd and 1st, respectively, under conventional management in multi-site yield trials. However, these lines ranked 53rd and 21st, respectively, for grain yield in the multi-site organic yield trials. Selected lines were each yield stable within the management system in which they were selected. Following replicated multi-location yield trials, three lines from the population (BA 02, 29 and 58) ranked within the highest 10% yielding lines in both conventional and organic systems. The results of this study suggest that selection differences occur across multi-location tests, and that selection for grain yield in organic systems should be conducted within organic systems. It is evident, however, that data obtained from conventional yield trials also has some relevance towards breeding for organic environments. Springer Science+Business Media B.V., 2010 Triticum aestivum nationallicence Organic breeding nationallicence Organic management nationallicence Selection index nationallicence CIMMYT : International Maize and Wheat Improvement Center nationallicence NIR : Near-infrared reflectance nationallicence RILs : Recombinant inbred lines nationallicence Reid Todd Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut Yang Rong-Cai Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut Salmon Donald Alberta Agriculture, Food, and Rural Development, Field Crop Development Centre, T4L 1W8, Lacombe, AB, Canada aut Navabi Alireza Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut Spaner D. Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut Euphytica Springer Netherlands 177/2(2011-01-01), 253-266 0014-2336 177:2<253 2011 177 10681 https://doi.org/10.1007/s10681-010-0257-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-010-0257-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Reid Todd Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Yang Rong-Cai Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Salmon Donald Alberta Agriculture, Food, and Rural Development, Field Crop Development Centre, T4L 1W8, Lacombe, AB, Canada aut NATIONALLICENCE 700 1- Navabi Alireza Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Spaner D. Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 177/2(2011-01-01), 253-266 0014-2336 177:2<253 2011 177 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer