Person: Sukumaran, S.
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Sukumaran
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S.
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Sukumaran, S.
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0000-0003-4088-4624 5 results
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- Breeder friendly phenotyping(Elsevier, 2020) Reynolds, M.P.; Chapman, S.; Crespo Herrera, L.A.; Molero, G.; Mondal, S.; Pequeno, D.N.L.; Pinto Espinosa, F.; Piñera Chavez, F.J; Poland, J.; Rivera-Amado, C.; Saint Pierre, C.; Sukumaran, S.
Publication - Increasing genetic gains in wheat through physiological genetics and breeding(CIMMYT, [2016]) Sukumaran, S.; Reynolds, M.P.; Crossa, J.; Lopes, M.; Jarquin, D.; Dreisigacker, S.; Molero, G.; Pinto Espinosa, F.; Piñera Chavez, F.JIn order to meet future wheat demand it is necessary to increase yield potential and develop stress adapted genotypes. To do so, research and breeding is conducted at CIMMYT through the International Wheat Yield Partnership (IWYP) platform combining physiology, genetics, and breeding. Physiological breeding focuses on understanding the physiology and genetics of key traits and conducting complementary crosses among them based on conceptual models to utilize the diversity present in the CIMMYT germplasm. Physiological breeding combined with genetic approaches (GWAS, QTLs, Genomic Selection) are used in the program to achieve genetic gains. (Reynolds and Langridge 2016 Current opinion in plant biology).
Publication - Strategic crossing of biomass and harvest index—source and sink—achieves genetic gains in wheat(Springer, 2017) Reynolds, M.P.; Pask, A.; Hoppitt, W.J.E.; Sonder, K.; Sukumaran, S.; Molero, G.; Saint Pierre, C.; Payne, T.S.; Singh, R.P.; Braun, H.J.; González, F.G.; Terrile, I.I.; Barma, N.C.D.; Abdul Hakim, M.; He Zhonghu; Zheru Fan; Novoselovic, D.; Maghraby, M.; Gad, K.I.M.; Galal, E.G.; Hagras, A.; Mohamed M. Mohamed; Morad, A.F.A.; Kumar, U.; Singh, G.P.; Naik, R.; Kalappanavar, I.K.; Biradar, S.; Prasad, S.V.S.; Chatrath, R.; Sharma, I.; Panchabhai, K.; Sohu, V.S.; Gurvinder Singh Mavi; Mishra, V.K.; Balasubramaniam, A.; Jalal Kamali, M.R.; Khodarahmi, M.; Dastfal, M.; Tabib Ghaffary, S.M.; Jafarby, J.; Nikzad, A.R.; Moghaddam, H.A.; Hassan Ghojogh; Mehraban, A.; Solís Moya, E.; Camacho Casas, M.A.; Figueroa, P.; Ireta Moreno, J.; Alvarado Padilla, J.I.; Borbón Gracia, A.; Torres, A.; Quiche, YN.; Upadhyay, S.R.; Pandey, D.; Imtiaz, M.; Rehman, M.U.; Hussain, M.; Ud-din, R.; Qamar, M.; Muhammad Kundi; Mujahid, M.Y.; Ahmad, G.; Khan, A.J.; Mehboob Ali Sial; Mustatea, P.; Well, E. von; Ncala, M.; Groot, S. de; Hussein, A.H.A.; Tahir, I.S.A.; Idris, A.A.M.; Elamein, H.M.M.; Yann Manes; Joshi, A.K.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.
Publication - Phenotyping for breeding and physiological pre-breeding(CIMMYT, 2016) Reynolds, M.P.; Molero, G.; Pinto Espinosa, F.; Rivera-Amado, C.; Piñera Chavez, F.J; Sukumaran, S.; Lopes, M.; Saint Pierre, C.
Publication - Genetic mapping and physiological breeding towards heat and drought tolerance in spring wheat(CIMMYT, 2016) Sukumaran, S.; Cossani, C.M.; Molero, G.; Valluru, R.; Tattaris, M.; Reynolds, M.P.
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