Kosuke Hamazaki's website

Sei Kinoshita, Kengo Sakurai, Kosuke Hamazaki, Takahiro Tsusaka, Miki Sakurai, Terue Kurosawa, Youichi Aoki, Kenta Shirasawa, Sachiko Isobe, Hiroyoshi Iwata,

“Assessing the potential for genome-assisted breeding in red perilla using quantitative trait locus analysis and genomic prediction”,

International Plant & Animal Genome Conference 2024 (PAG 31), PO0257, San Diego, USA (Jan. 2024)

Kengo Sakurai, Kosuke Hamazaki, Minoru Inamori, Hiroyoshi Iwata,

“Crossing strategy considering segregation of later generations in a plant breeding program”,

International Plant & Animal Genome Conference 2024 (PAG 31), PO0623, San Diego, USA (Jan. 2024)

Hideto Mochizuki, Mai F. Minamikawa, Kosuke Hamazaki, Miyuki Kunihisa, Shigeki Moriya, Koji Noshita, Takeshi Hayashi, Yuichi Katayose, Toshiya Yamamoto, Hiroyoshi Iwata,

“Haplotype Bias Detection By Pedigree-Based Transmission Simulation: Finding Traces of Selection That Occurred in Apple Breeding”,

International Plant & Animal Genome Conference 2024 (PAG 31), PO0627, San Diego, USA (Jan. 2024)

Sei Kinoshita, Kengo Sakurai, Kosuke Hamazaki, Takahiro Tsusaka, Miki Sakurai, Terue Kurosawa, Kenta Shirasawa, Sachiko Isobe, Hiroyoshi Iwata,

“Selection of cross combinations based on predicted breeding value of later generations: application to mating scheme using multiple F3 populations of red perilla”,

Asian Horticultural Congress 2023, P1-37, Tokyo, Japan (Aug. 2023)

Hideto Mochizuki, Mai F. Minamikawa, Kosuke Hamazaki, Miyuki Kunihisa, Koji Noshita, Shigeki Moriya, Takeshi Hayashi, Yuichi Katayose, Toshiya Yamamoto, Hiroyoshi Iwata,

“A simulation-based analysis approach to uncover crucial genetic regions in apple breeding”,

Asian Horticultural Congress 2023, P1-6, Tokyo, Japan (Aug. 2023)

Kosuke Hamazaki and Hiroyoshi Iwata,

“Development of a Haplotype-Based GWAS Method”,

The Plant and Animal Genome XXVII Conference, PO0059, San Diego, USA (Jan. 2019)

Seminars/Workshops/Others:

Kosuke Hamazaki,

“Pitfalls in the application of machine learning to breeding”,

W04: Pitfalls in data analysis: Is your analysis really sound?, The 148th Japanese Society of Breeding Meeting, Sapporo Convention Center, Hokkaido, Japan. (Sep. 2025, Organizer)

Kengo Sakurai, Kousuke Hamazaki, Minoru Inamori, Hiroyoshi Iwata,

“Crossing Strategy for Plant Breeding”,

Symposium University of Tokyo - ETH Zurich - University of Zurich, Zurich, Switzerland (Oct. 2023, Presentation Award)

Kosuke Hamazaki,

“Bayesian optimization of multivariate genomic prediction models based on secondary traits for improved accuracy gains and phenotyping costs”,

iTHEMS Biology Seminar, RIKEN, Online (Jul. 2022)

Kosuke Hamazaki,

“Development of a novel GWAS method for the detection of causal genes with population specific allelic effects”,

Séminaire MIA Paris, UMR MIA-Paris-Saclay, AgroParisTech, INRAE, Université Paris Saclay, Paris, France (Feb. 2022)

Domestic Conference (Oral):

Kengo Sakurai, Yusuke Toda, Minoru Inamori, Kosuke Hamazaki, Hisashi Tsujimoto, Akito Kaga, Hiroyoshi Iwata,

“Strategic crossing using genome data to improve genetic potential in soybean RIL population”,

The 148th Japanese Society of Breeding Meeting, 406, Sapporo Convention Center, Hokkaido, Japan. (Sep. 2025)

Hideto Mochizuki, Kosuke Hamazaki, Chikashi Sato, Akira Abe, Chyon Hae Kim, Hiroyuki Shimono, Hiroyoshi Iwata,

“Application of Random Forest in a Bayesian Optimization Framework: To propose optimal rice genotype and environment combinations”,

The 147th Japanese Society of Breeding Meeting, 307, Tohoku University, Miyagi, Japan. (Mar. 2025)

Kosuke Hamazaki, Hiroyoshi Iwata, Koji Tsuda,

“Differentiable breeding: Automatic differentiation enables efficient gradient-based optimization of breeding strategies”,

The 146th Japanese Society of Breeding Meeting, 401, Hiroshima University, Hiroshima, Japan. (Sep. 2024)

Sei Kinoshita, Kengo Sakurai, Kosuke Hamazaki, Takahiro Tsusaka, Miki Sakurai, Kenta Shirasawa, Sachiko Isobe, Hiroyoshi Iwata,

“Optimization of cross pairs among families with different genetic characteristics to improve multiple traits”,

The 146th Japanese Society of Breeding Meeting, 404, Hiroshima University, Hiroshima, Japan. (Sep. 2024)

Kosuke Hamazaki, Hiroyoshi Iwata, Koji Tsuda,

“Assessing and reducing the impact of genomic prediction accuracy on breeding programs”,

The 144th Japanese Society of Breeding Meeting, 601, Kobe University, Hyogo, Japan. (Sep. 2023)

Sei Kinoshita, Kengo Sakurai, Kosuke Hamazaki, Takahiro Tsusaka, Miki Sakurai, Terue Kurosawa, Kenta Shirasawa, Sachiko Isobe, Hiroyoshi Iwata,

“Estimating the spread of genetic diversity through within-family cross”,

The 144th Japanese Society of Breeding Meeting, 602, Kobe University, Hyogo, Japan. (Sep. 2023)

Hideto Mochizuki, Kosuke Hamazaki, Chikashi Sato, Akira Abe, Chyon Hae Kim, Hiroyuki Shimono, Hiroyoshi Iwata,

“Proposing optimal combinations of genotype and environment using batch Bayesian optimization”,

The 144th Japanese Society of Breeding Meeting, 603, Kobe University, Hyogo, Japan. (Sep. 2023)

Kosuke Hamazaki, Hiroyoshi Iwata, Tristan Mary-Huard,

“Development of a novel GWAS method for the detection of causal genes with population specific allelic effects”,

The 143rd Japanese Society of Breeding Meeting, 307, Shizuoka University, Shizuoka, Japan. (Mar. 2023, Presentation Award)

Sei Kinoshita, Kengo Sakurai, Kosuke Hamazaki, Tai-Shen Chen, Takahiro Tsusaka, Miki Sakurai, Terue Kurosawa, Kenta Shirasawa, Sachiko Isobe, Hiroyoshi Iwata,

“Selection of cross combinations based on predicted breeding value of later generations: application to mating scheme using multiple F3 populations of red perilla”,

The 143rd Japanese Society of Breeding Meeting, 211, Shizuoka University, Shizuoka, Japan. (Mar. 2023)

Kosuke Hamazaki and Hiroyoshi Iwata,

“Future-oriented mating strategy via simulations optimizes breeding programs with selection indices”,

The 142nd Japanese Society of Breeding Meeting, 217, Obihiro Chikusan University, Hokkaido, Japan. (Sep. 2022, Presentation Award)

Hideto Mochizuki, Mai Minamikawa, Kosuke Hamazaki, Miyuki Kunihisa, Shigeki Moriya, Kazuyuki Abe, Hiroyoshi Iwata,

"Predicting phenotypes using IBS/IBD-based genomic relationship and pedigree-based numerator relationship matrices",

The 142nd Japanese Society of Breeding Meeting, 213, Obihiro Chikusan University, Hokkaido, Japan. (Sep. 2022)

Yusuke Toda, Kosuke Hamazaki, Mashiro Okada, Kengo Sakurai, Yushiro Fuji, Yoshihiro Omori, Yuji Yamasaki, Hirokazu Takahashi, Hideki Takanashi, Mai Tsuda, Hiromi Kajiya- Kanegae, Yumi Hirai, Hisashi Tsujimoto, Akito Kaga, Mikio Nakazono, Toru Fujiwara, Hiroyoshi Iwata,

“Comprehensive genome-wide association study of multi-omics data for soybean drought tolerance”,

The 141st Japanese Society of Breeding Meeting, 526, Online. (Mar. 2022)

Kosuke Hamazaki, Motoyuki Ishimori, Lisa Sakamoto, Yusuke Toda, Yoshihiro Omori, Yuji Yamasaki, Hirokazu Takahashi, Hideki Takanashi, Mai Tsuda, Hiromi Kajiya-Kanegae, Hisashi Tsujimoto, Yuji Sawada, Akito Kaga, Mikio Nakazono, Toru Fujiwara, Hiroyoshi Iwata,

“Detection and estimation of gene effects via GWAS based on haplotype phylogenetic relationships",

The 138th Japanese Society of Breeding Meeting, 106, Online. (Oct. 2020)

Kosuke Hamazaki and Hiroyoshi Iwata,

“Optimizing genomic prediction for costs and accuracy over phenotyping in early growth stages”,

The 135th Japanese Society of Breeding Meeting, 314, Chiba University, Chiba, Japan. (Mar. 2019)

Kosuke Hamazaki, Hiromi Kajiya-Kanegae, and Hiroyoshi Iwata,

“Nonlinear kernel-based GWAS for testing multiple markers simultaneously”,

The 133rd Japanese Society of Breeding Meeting, 109, Kyushu University, Fukuoka, Japan. (Mar. 2018)

Domestic Conference (Poster):

Kosuke Hamazaki, Koji Tsuda, Hiroyoshi Iwata,

“Optimizing progeny allocation strategies in breeding programs while updating genomic prediction models”,

The 145th Japanese Society of Breeding Meeting, P001, The University of Tokyo, Tokyo, Japan. (Mar. 2024)

Kengo Sakurai, Kosuke Hamazaki, Minoru Inamori, Akito Kaga, Hiroyoshi Iwata,

“Crossing strategy considering segregation of later generations in a plant breeding program”,

The 145th Japanese Society of Breeding Meeting, P002, The University of Tokyo, Tokyo, Japan. (Mar. 2024)

Kosuke Hamazaki, Motoyuki Ishimori, Lisa Sakamoto, Yusuke Toda, Yoshihiro Omori, Yuji Yamasaki, Hirokazu Takahashi, Hideki Takanashi, Mai Tsuda, Hiromi Kajiya-Kanegae, Hisashi Tsujimoto, Yuji Sawada, Akito Kaga, Mikio Nakazono, Toru Fujiwara, Hiroyoshi Iwata,

“Phylogenetic analysis for genes related to biomass of soybean using haplotype-based GWAS”,

The 137th Japanese Society of Breeding Meeting, P039, The University of Tokyo, Tokyo, Japan. (Mar. 2020)

Kousuke Ono, Ryokei Tanaka, Kosuke Hamazaki, and Hiroyoshi Iwata,

“Comparison of indices for accuracy evaluations of genomic selection: a simulation study”,

The 135th Japanese Society of Breeding Meeting, P008, Chiba University, Chiba, Japan. (Mar. 2019)

Kosuke Hamazaki, Hiromi Kajiya-Kanegae, Masanori Yamasaki, Kaworu Ebana, Shiori Yabe, Hiroshi Nakagawa, and Hiroyoshi Iwata,

“How to choose the optimal population for genome-wide association study?: Simulation study using whole genome sequence of rice genetic resources”,

The 134th Japanese Society of Breeding Meeting, P040, Okayama University, Okayama, Japan. (Sep. 2018, Presentation Award)

Kosuke Hamazaki, Hiromi Kajiya-Kanegae, Masanori Yamasaki, Kaworu Ebana, Shiori Yabe, Hiroshi Nakagawa, and Hiroyoshi Iwata,

“Can GWAS using whole-genome find causal SNPs regardless of population structure?: Comparison with conventional GWAS”,

The 132nd Japanese Society of Breeding Meeting, P044, Iwate University, Iwate, Japan. (Oct. 2017)

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