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1. Correction to: Strategic crossing of biomass and harvest index—source and sink—achieves genetic gains in wheat

Author

William Hoppitt, Hala M. M. Elamein, Dario Novoselovic, Kishor Panchabhai, Indu Sharma, Seyed M. Tabib-Ghaffari, Mahboob A. Sial, Moses Ncala, Muhammad Imtiaz, Hassan Ghojogh, Jorge I. Alvarado-Padilla, Abdul Hakim, Araceli Torres, G. S. Mavi, Mohamed Mokhtar Mohamed, Manzoor Hussain, Gyanendra Pratap Singh, ElHusseiny G. Galal, Ernesto Solís-Moya, Virinder Singh Sohu, Amani A. M. Idris, Alberto Borbón-Gracia, Yei Nayeli Quiche, I. K. Kalappanavar, Adel Hagras, Ravi P. Singh, Khaled I. M. Gad, Makhdoom Hussain, Riaz Ud-Din, Fernanda G González, Kai Sonder, Pedro Figueroa-López, Mohammad R. Jalal-Kamali, Zheru Fan, Ignacio I. Terrile, Naresh Chandra Deb Barma, Asghar Mehraban, Eben von Well, Hossein Akbari Moghaddam, Shesh R. Upadhyay, M. Y. Mujahid, S. V. Sai Prasad, Ahmad R. Nikzad, M. Dastfal, Arun Balasubramaniam, Zhonghu He, Abdelraheem H. A. Hussein, Maher Maghraby, Stephan de Groot, Abdul Jabbar Khan, Pompiliu Mustatea, Gulzar Ahmad, Sivakumar Sukumaran, Suma S. Biradar, Abdul Fatah A. Morad, Maqsood Qamar, Matthew P. Reynolds, Manoochehr Khodarahmi, Miguel A. Camacho-Casas, Muhammad Sohail, Rudra Naik, Uttam Kumar, V. K. Mishra, Yann Manes, Arun Kumar Joshi, Monsif U. Rehman, Javier Ireta-Moreno, Hans J. Braun, Jabbar Jafarby, Thomas Payne, Izzat S. A. Tahir, Ravish Chatrath, Deepak Pandey, Gemma Molero, Carolina Saint Pierre, and A.J.D. Pask

Subjects
0301 basic medicine, 03 medical and health sciences, Source–sink dynamics, 030104 developmental biology, Index (economics), Genetics, Correction, Biomass, Plant Science, Agricultural engineering, Horticulture, Biology, Agronomy and Crop Science
Abstract

The original article was corrected. Author Muhammad Kundi should instead read: Muhammad Sohail.

Published
2017
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2. Strategic crossing of biomass and harvest index—source and sink—achieves genetic gains in wheat

Author

Abdelraheem H. A. Hussein, S. V. Sai Prasad, Seyed M. Tabib-Ghaffari, Gyanendra Pratap Singh, Khaled I. M. Gad, Ahmad R. Nikzad, Mohammad R. Jalal-Kamali, Mahboob A. Sial, Abdul Jabbar Khan, Asghar Mehraban, Eben von Well, Rudra Naik, Fernanda G González, William Hoppitt, Hans J. Braun, Gemma Molero, Gulzar Ahmad, Abdul Hakim, Kai Sonder, Carolina Saint Pierre, Araceli Torres, Thomas Payne, Mohamed Mokhtar Mohamed, Suma S. Biradar, Moses Ncala, Yei Nayeli Quiche, I. K. Kalappanavar, Makhdoom Hussain, Abdul Fatah A. Morad, G. S. Mavi, Kishor Panchabhai, Ravish Chatrath, Riaz Ud-Din, Ignacio I. Terrile, Indu Sharma, Ernesto Solís-Moya, Deepak Pandey, Manoochehr Khodarahmi, M. Dastfal, V. K. Mishra, Arun Balasubramaniam, Yann Manes, Zhonghu He, Miguel A. Camacho-Casas, Maher Maghraby, Pedro Figueroa-López, Hossein Akbari Moghaddam, Shesh R. Upadhyay, Muhammad Sohail, Pompiliu Mustatea, Dario Novoselovic, Javier Ireta-Moreno, ElHusseiny G. Galal, Adel Hagras, Ravi P. Singh, Stephan de Groot, Matthew P. Reynolds, Manzoor Hussain, Jorge I. Alvarado-Padilla, Amani A. M. Idris, Alberto Borbón-Gracia, Muhammad Imtiaz, Hassan Ghojogh, Izzat S. A. Tahir, Sivakumar Sukumaran, Uttam Kumar, Arun Kumar Joshi, Monsif U. Rehman, Virinder Singh Sohu, Jabbar Jafarby, Maqsood Qamar, Zheru Fan, Hala M. M. Elamein, Naresh Chandra Deb Barma, M. Y. Mujahid, and A.J.D. Pask

Subjects
0106 biological sciences, 0301 basic medicine, Germplasm, Biomass (ecology), Source–sink dynamics, Index (economics), business.industry, Yield (finance), Plant Science, Horticulture, Biology, 01 natural sciences, Biotechnology, 03 medical and health sciences, 030104 developmental biology, Agronomy, Genetics, Trait, Temperate climate, Sink (computing), business, Agronomy and Crop Science, 010606 plant biology & botany
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.

Published
2017

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