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Strategic crossing of biomass and harvest index—source and sink—achieves genetic gains in wheat

Author: Reynolds, M.P.
Author: Pask, A.
Author: Hoppitt, W.J.E.
Author: Sonder, K.
Author: Sukumaran, S.
Author: Molero, G.
Author: Saint Pierre, C.
Author: Payne, T.S.
Author: Singh, R.P.
Author: Braun, H.J.
Author: Gonzalez, F.G.
Author: Terrile, I.I.
Author: Barma, N.C.D
Author: Abdul Hakim, M.
Author: He, Zhonghu
Author: Zheru Fan
Author: Novoselovic, D.
Author: Maghraby, M.
Author: Gad, K.I.M.
Author: Galal, E.G.
Author: Hagras, A.
Author: Mohamed M. Mohamed
Author: Morad, A.F.A.
Author: Kumar, U.
Author: Gyanendra Pratap Singh
Author: Naik, R.
Author: Kalappanavar, I.K.
Author: Biradar, S.
Author: Prasad, S.V.S.
Author: Chatrath, R.
Author: Sharma, I.
Author: Panchabhai, K.
Author: Sohu, V.S.
Author: Gurvinder Singh Mavi
Author: Vinod Kumar Mishra
Author: Balasubramaniam, A.
Author: Jalal Kamali, M.R.
Author: Khodarahmi, M.
Author: Dastfal, M.
Author: Tabib Ghaffary, S.M.
Author: Jafarby, J.
Author: Nikzad, A.R.
Author: Moghaddam, H.A.
Author: Hassan Ghojogh
Author: Mehraban, A.
Author: Solís Moya, E.
Author: Camacho Casas, M.A.
Author: Figueroa López, P.
Author: Ireta Moreno, J.
Author: Alvarado Padilla, J.I.
Author: Borbón Gracia, A.
Author: Torres, A.
Author: Quiche, YN.
Author: Upadhyay, S.R.
Author: Pandey, D.
Author: Imtiaz, M.
Author: Rehman, M.U.
Author: Hussain, M.
Author: Hussain, M.
Author: Ud-din, R.
Author: Qamar, M.
Author: Muhammad Kundi
Author: Mujahid, M.Y.
Author: Ahmad, G.
Author: Khan, A.J.
Author: Mehboob Ali Sial
Author: Mustatea, P.
Author: Well, E. von
Author: Ncala, M.
Author: Groot, S. de
Author: Hussein, A.H.A.
Author: Tahir, I.S.A.
Author: Idris, A.A.M.
Author: Elamein, H.M.M.
Author: Yann Manes
Author: Joshi, A.K.
Year: 2017
Abstract: To accelerate genetic gains in breeding, physiological trait (PT) characterization of candidate parents can help make more strategic crosses, increasing the probability of accumulating favorable alleles compared to crossing relatively uncharacterized lines. In this study, crosses were designed to complement “source” with “sink” traits, where at least one parent was selected for favorable expression of biomass and/or radiation use efficiency—source—and the other for sink-related traits like harvest-index, kernel weight and grains per spike. Female parents were selected from among genetic resources—including landraces and products of wide-crossing (i.e. synthetic wheat)—that had been evaluated in Mexico at high yield potential or under heat stress, while elite lines were used as males. Progeny of crosses were advanced to the F4 generation within Mexico, and F4-derived F5 and F6 generations were yield tested to populate four international nurseries, targeted to high yield environments (2nd and 3rd WYCYT) for yield potential, and heat stressed environments (2nd and 4th SATYN) for climate resilience, respectively. Each nursery was grown as multi-location yield trials. Genetic gains were achieved in both temperate and hot environments, with most new PT-derived lines expressing superior yield and biomass compared to local checks at almost all international sites. Furthermore, the tendency across all four nurseries indicated either the superiority of the best new PT lines compared with the CIMMYT elite checks, or the superiority of all new PT lines as a group compared with all checks, and in some cases, both. Results support—in a realistic breeding context—the hypothesis that yield and radiation use efficiency can be increased by improving source:sink balance, and validate the feasibility of incorporating exotic germplasm into mainstream breeding efforts to accelerate genetic gains for yield potential and climate resilience.
Format: PDF
Language: English
Publisher: Springer
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Place of Publication: Netherlands
Pages: pages 1-23
Issue: no. 257
Volume: v. 213
DOI: 10.1007/s10681-017-2040-z
Keywords: Physiological Breeding
Keywords: Climate Resilience
Keywords: Pre-Breeding
Keywords: Rapid Cycle Breeding
Agrovoc: HEAT
Related Datasets:
Related Datasets:
Related Datasets:
Related Datasets:
Journal: Euphytica

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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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