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 8 results
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- Harnessing translational research in wheat for climate resilience(Oxford University Press, 2021) Reynolds, M.P.; Lewis, J.; Ammar, K.; Basnet, B.R.; Crespo Herrera, L.A.; Crossa, J.; Dhugga, K.; Dreisigacker, S.; Juliana, P.; Karwat, H.; Kishii, M.; Krause, M.; Langridge, P.; Lashkari, A.; Mondal, S.; Payne, T.S.; Pequeno, D.N.L.; Pinto Espinosa, F.; Sansaloni, C.; Schulthess, U.; Singh, R.P.; Sonder, K.; Sukumaran, S.; Wei Xiong; Braun, H.J.
Publication - AP01 - Exploring genetic diversity for biomass and traits related to canopy photosynthesis(CIMMYT, 2019) Molero, G.; Pinto Espinosa, F.; Piñera Chavez, F.J; Rivera-Amado, C.; Sukumaran, S.; Gimeno, J.; Saint Pierre, C.; Reynolds, M.P.
Publication - 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 - Spectral reflectance indices as proxies for yield potential and heat stress tolerance in spring wheat: heritability estimates and marker-trait associations(Higher Education Press, 2019) Caiyun Liu; Pinto Espinosa, F.; Cossani, C.M.; Sukumaran, S.; Reynolds, M.P.The application of spectral reflectance indices (SRIs) as proxies to screen for yield potential (YP) and heat stress (HS) is emerging in crop breeding programs. Thus, a comparison of SRIs and their associations with grain yield (GY) under YP and HS conditions is important. In this study, we assessed the usefulness of 27 SRIs for indirect selection for agronomic traits by evaluating an elite spring wheat association mapping initiative (WAMI) population comprising 287 elite lines under YP and HS conditions. Genetic and phenotypic analysis identified 11 and 9 SRIs in different developmental stages as efficient indirect selection indices for yield in YP and HS conditions, respectively. We identified enhanced vegetation index (EVI) as the common SRI associated with GY under YP at booting, heading and late heading stages, whereas photochemical reflectance index (PRI) and normalized difference vegetation index (NDVI) were the common SRIs under booting and heading stages in HS. Genomewide association study (GWAS) using 18704 single nucleotide polymorphisms (SNPs) from Illumina iSelect 90K identified 280 and 43 marker-trait associations for efficient SRIs at different developmental stages under YP and HS, respectively. Common genomic regions for multiple SRIs were identified in 14 regions in 9 chromosomes: 1B (60–62 cM), 3A (15, 85–90, 101– 105 cM), 3B (132–134 cM), 4A (47–51 cM), 4B (71– 75 cM), 5A (43–49, 56–60, 89–93 cM), 5B (124–125 cM), 6A (80–85 cM), and 6B (57–59, 71 cM). Among them, SNPs in chromosome 5A (89–93 cM) and 6A (80–85 cM) were co-located for yield and yield related traits. Overall, this study highlights the utility of SRIs as proxies for GY under YP and HS. High heritability estimates and identification of marker-trait associations indicate that SRIs are useful tools for understanding the genetic basis of agronomic and physiological traits.
Publication - Incorporating complex physiological traits into wheat breeding pipelines(CIMMYT, 2018) Molero, G.; Piñera Chavez, F.J; Rivera-Amado, C.; Gimeno, J.; Pinto Espinosa, F.; Sukumaran, S.; Saint Pierre, C.; Reynolds, M.P.
Publication - AP01 - Exploring Genetic Diversity for Biomass and Traits Related to Canopy Photosynthesis(CIMMYT, 2018) Molero, G.; Pinto Espinosa, F.; Piñera Chavez, F.J; Rivera-Amado, C.; Sukumaran, S.; Reynolds, M.P.
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 - 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.
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