Hiroyoshi Iwata

Summary

Affiliation: National Institute of Agrobiological Sciences
Country: Japan

Publications

  1. doi request reprint Bayesian multilocus association mapping on ordinal and censored traits and its application to the analysis of genetic variation among Oryza sativa L. germplasms
    Hiroyoshi Iwata
    Data Mining and Grid Research Team, National Agricultural Research Center, National Agriculture and Food Research Organization, 3 1 1 Kannondai, Tsukuba, Ibaraki, 305 8666, Japan
    Theor Appl Genet 118:865-80. 2009
  2. ncbi request reprint Bayesian association mapping of multiple quantitative trait loci and its application to the analysis of genetic variation among Oryza sativa L. germplasms
    Hiroyoshi Iwata
    Data Mining and Grid Research Team, National Agricultural Research Center, 3 1 1 Kannondai, Tsukuba, Ibaraki, 305 8666, Japan
    Theor Appl Genet 114:1437-49. 2007
  3. ncbi request reprint Genetic diversity among Japanese indigenous common buckwheat (Fagopyrum esculentum) cultivars as determined from amplified fragment length polymorphism and simple sequence repeat markers and quantitative agronomic traits
    Hiroyoshi Iwata
    Department of Information Science and Technology, National Agricultural Research Center, Ibaraki, Japan
    Genome 48:367-77. 2005
  4. ncbi request reprint SHAPE: a computer program package for quantitative evaluation of biological shapes based on elliptic Fourier descriptors
    H Iwata
    Department of Information Science and Technology, National Agricultural Research Center, 3 1 1 Kannondai, Tsukuba, Ibaraki 305 8666, Japan
    J Hered 93:384-5. 2002
  5. pmc Genome scan to detect genetic structure and adaptive genes of natural populations of Cryptomeria japonica
    Yoshihiko Tsumura
    National Agricultural Research Center, Tsukuba, Ibaraki 305 8666, Japan
    Genetics 176:2393-403. 2007
  6. pmc Ability of bumblebees to discriminate differences in the shape of artificial flowers of Primula sieboldii (Primulaceae)
    Yosuke Yoshioka
    Graduate School of Life and Environmental Sciences, University of Tsukuba, 1 1 1 Tennodai, Tsukuba, Ibaraki, 305 8572 Japan
    Ann Bot 99:1175-82. 2007
  7. doi request reprint Relationship between changes in crystalline lens shape and axial elongation in young children
    Kotaro Ishii
    Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
    Invest Ophthalmol Vis Sci 54:771-7. 2013
  8. pmc EM algorithm for Bayesian estimation of genomic breeding values
    Takeshi Hayashi
    Division of Animal Sciences, National Institute of Agrobiological Sciences, Kannondai, Tsukuba, Ibaraki 305 8602, Japan
    BMC Genet 11:3. 2010
  9. pmc A consensus linkage map for sugi (Cryptomeria japonica) from two pedigrees, based on microsatellites and expressed sequence tags
    Naoki Tani
    Department of Forest Genetics, Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305 8687, Japan
    Genetics 165:1551-68. 2003
  10. doi request reprint Genetic structure of island populations of Prunus lannesiana var. speciosa revealed by chloroplast DNA, AFLP and nuclear SSR loci analyses
    Shuri Kato
    Department of Forest Genetics, Forestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, Ibaraki 305 8687, Japan
    J Plant Res 124:11-23. 2011

Collaborators

Detail Information

Publications21

  1. doi request reprint Bayesian multilocus association mapping on ordinal and censored traits and its application to the analysis of genetic variation among Oryza sativa L. germplasms
    Hiroyoshi Iwata
    Data Mining and Grid Research Team, National Agricultural Research Center, National Agriculture and Food Research Organization, 3 1 1 Kannondai, Tsukuba, Ibaraki, 305 8666, Japan
    Theor Appl Genet 118:865-80. 2009
    ..We found significant markers that may be linked to previously reported QTLs. Our approach will be useful for whole-genome association mapping of ordinal and censored traits in rice germplasm collections...
  2. ncbi request reprint Bayesian association mapping of multiple quantitative trait loci and its application to the analysis of genetic variation among Oryza sativa L. germplasms
    Hiroyoshi Iwata
    Data Mining and Grid Research Team, National Agricultural Research Center, 3 1 1 Kannondai, Tsukuba, Ibaraki, 305 8666, Japan
    Theor Appl Genet 114:1437-49. 2007
    ..Association mapping should have good prospects in highly selfing species such as rice if proper methods are adopted. Our approach will be useful for the whole genome association mapping of various selfing crop species...
  3. ncbi request reprint Genetic diversity among Japanese indigenous common buckwheat (Fagopyrum esculentum) cultivars as determined from amplified fragment length polymorphism and simple sequence repeat markers and quantitative agronomic traits
    Hiroyoshi Iwata
    Department of Information Science and Technology, National Agricultural Research Center, Ibaraki, Japan
    Genome 48:367-77. 2005
    ..382-0.607) between allelic richness and variation in flowering timing, indicating that cumulative bottleneck events have occurred during the population history, with a decline in the variation of photosensitivity of flowering...
  4. ncbi request reprint SHAPE: a computer program package for quantitative evaluation of biological shapes based on elliptic Fourier descriptors
    H Iwata
    Department of Information Science and Technology, National Agricultural Research Center, 3 1 1 Kannondai, Tsukuba, Ibaraki 305 8666, Japan
    J Hered 93:384-5. 2002
  5. pmc Genome scan to detect genetic structure and adaptive genes of natural populations of Cryptomeria japonica
    Yoshihiko Tsumura
    National Agricultural Research Center, Tsukuba, Ibaraki 305 8666, Japan
    Genetics 176:2393-403. 2007
    ....
  6. pmc Ability of bumblebees to discriminate differences in the shape of artificial flowers of Primula sieboldii (Primulaceae)
    Yosuke Yoshioka
    Graduate School of Life and Environmental Sciences, University of Tsukuba, 1 1 1 Tennodai, Tsukuba, Ibaraki, 305 8572 Japan
    Ann Bot 99:1175-82. 2007
    ..This study focused on the diversity of flower shape in Primula sieboldii and investigated the ability of bumblebees to discriminate between flowers by combining computer graphics with a traditional behavioural experiment...
  7. doi request reprint Relationship between changes in crystalline lens shape and axial elongation in young children
    Kotaro Ishii
    Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
    Invest Ophthalmol Vis Sci 54:771-7. 2013
    ..To evaluate the relationship between changes in crystalline lens shape and axial elongation during growth in young children...
  8. pmc EM algorithm for Bayesian estimation of genomic breeding values
    Takeshi Hayashi
    Division of Animal Sciences, National Institute of Agrobiological Sciences, Kannondai, Tsukuba, Ibaraki 305 8602, Japan
    BMC Genet 11:3. 2010
    ..However, much computational burden is imposed on the MCMC-based Bayesian methods. A method with both high computing efficiency and prediction accuracy is desired to be developed for practical use of genomic selection...
  9. pmc A consensus linkage map for sugi (Cryptomeria japonica) from two pedigrees, based on microsatellites and expressed sequence tags
    Naoki Tani
    Department of Forest Genetics, Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305 8687, Japan
    Genetics 165:1551-68. 2003
    ..These markers are very useful for integration of different linkage maps, QTL mapping, and comparative mapping for evolutional study, especially for species with a large genome size such as conifers...
  10. doi request reprint Genetic structure of island populations of Prunus lannesiana var. speciosa revealed by chloroplast DNA, AFLP and nuclear SSR loci analyses
    Shuri Kato
    Department of Forest Genetics, Forestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, Ibaraki 305 8687, Japan
    J Plant Res 124:11-23. 2011
    ..Furthermore, hybridization with related species may have affected the genetic structure, and some genetic introgression is likely to have occurred...
  11. ncbi request reprint Analysis of petal shape variation of Primula sieboldii by elliptic fourier descriptors and principal component analysis
    Yosuke Yoshioka
    Graduate School of Life and Environmental Sciences, University of Tsukuba, 1 1 1 Tennodai, Tsukuba, Ibaraki 305 8572, Japan
    Ann Bot 94:657-64. 2004
    ....
  12. ncbi request reprint Genetic diversity and the genetic structure of natural populations of Chamaecyparis obtusa: implications for management and conservation
    Y Tsumura
    Department of Forest Genetics, Forestry and Forest Products Research Institute, Tsukuba, Japan
    Heredity (Edinb) 99:161-72. 2007
    ....
  13. doi request reprint Bayesian QTL mapping for multiple families derived from crossing a set of inbred lines to a reference line
    T Hayashi
    Division of Animal Sciences, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan
    Heredity (Edinb) 102:497-505. 2009
    ..The method was evaluated through the use of simulated data sets for its efficiency in detecting QTL and identifying families segregating at each QTL...
  14. ncbi request reprint Single-strand conformation polymorphism of sequence-tagged site markers based on partial sequences of cDNA clones in Cryptomeria japonica
    Tokuko Ujino-Ihara
    Department of Forest Genetics, Forestry and Forest Products Research Institute, Kukizaki, Ibaraki, Japan
    Genes Genet Syst 77:251-7. 2002
    ....
  15. pmc A Bayesian method and its variational approximation for prediction of genomic breeding values in multiple traits
    Takeshi Hayashi
    Agroinformatics Division, National Agriculture and Food Research Organization, Agricultural Research Center, Kannondai, Tsukuba, Ibaraki, 305 8666, Japan
    BMC Bioinformatics 14:34. 2013
    ..As the computational burden of multi-trait analysis is even higher than that of single-trait analysis, an effective computational method for constructing a multi-trait prediction model is also needed...
  16. pmc QTL analysis of photoperiod sensitivity in common buckwheat by using markers for expressed sequence tags and photoperiod-sensitivity candidate genes
    Takashi Hara
    Graduate School of Life and Environmental Sciences, University of Tsukuba, 1 1 1 Tennondai, Tsukuba, Ibaraki 305 8572, Japan
    Breed Sci 61:394-404. 2011
    ..These results demonstrate that photoperiod sensitivity in common buckwheat is controlled by a pathway consisting of photoperiod-sensitivity candidate genes as well as multiple gene action...
  17. doi request reprint Quantitative evaluation of changes in eyeball shape in emmetropization and myopic changes based on elliptic fourier descriptors
    Kotaro Ishii
    Department of Ophthalmology, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
    Invest Ophthalmol Vis Sci 52:8585-91. 2011
    ..To evaluate changes in eyeball shape in emmetropization and myopic changes using magnetic resonance imaging (MRI) and elliptic Fourier descriptors (EFDs)...
  18. ncbi request reprint Mapping QTLs influencing rice floral morphology using recombinant inbred lines derived from a cross between Oryza sativa L. and Oryza rufipogon Griff
    Y Uga
    Institute of Agricultural and Forest Engineering, University of Tsukuba, 1 1 1 Tennodai, Tsukuba, Ibaraki 305 8572, Japan
    Theor Appl Genet 107:218-26. 2003
    ..These results suggest that quantitative variation observed for pistil, stamen and glume traits is controlled by several distinct genes with small effects...
  19. ncbi request reprint Quantitative evaluation of the petal shape variation in Primula sieboldii caused by breeding process in the last 300 years
    Y Yoshioka
    Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305 8572, Japan
    Heredity (Edinb) 94:657-63. 2005
    ..sieboldii...
  20. ncbi request reprint Integrated metabolomic and transcriptomic analyses of high-tryptophan rice expressing a mutant anthranilate synthase alpha subunit
    Joseph G Dubouzet
    CREST, Japan Science and Technology Agency, Tokyo 103 0027, Japan
    J Exp Bot 58:3309-21. 2007
    ....
  21. ncbi request reprint Distribution of S-alleles in island populations of flowering cherry, Prunus lannesiana var. speciosa
    Shuri Kato
    United Graduate School of Agricultural Science, Gifu University, Japan
    Genes Genet Syst 82:65-75. 2007
    ..This might be due to the greater effective migration rates of S-alleles, as expected under balancing selection in GSI...