5. 果樹のゲノミックセレクション
Minamikawa MF, Nonaka K, Kaminuma E, Kajiya-Kanegae H, Onogi A, Goto S, Yoshioka T, Imai A, Hamada H, Hayashi T,
Matsumoto S, Katayose Y, Toyoda A, Fujiyama A, Nakamura Y, Shimizu T, Iwata H.
Genome-wide association study and genomic prediction in citrus: Potential of genomics-assisted breeding for fruit quality traits.
Sci Rep. 2017 Jul 5;7(1):4721.
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17. Beagleとは?
• 2017.11.10 現在の最新版はBeagle version 4.1
• http://faculty.washington.edu/browning/beagle/beagle.html
• reference genome へのマッピングが必要
• Beagle 4.1の場合、Java version 8が必要
• 親子関係を用いて(ped argument)解析する場合は、Beagle 4.0 を使用
• 参考文献
B L Browning and S R Browning (2016).
Genotype imputation with millions of reference samples.
Am J Hum Genet 98:116-126. doi:10.1016/j.ajhg.2015.11.020
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18. Beagleの入力ファイル
• vcfおよびvcf.gzを利用可能
• Beagleで利用するためにはGTあるいはGLのFORMATが必要
#CHROM POS ID REF ALT QUAL FILTER INFO FORMAT RTx430 Tx642
Chr01 123ss.3 C T 2256.5PASS AC=2;AF=0.043 GT:AD:DP:GQ:PL 0/0:14,0:14:33:0,33,423 0/0:143,0:143:99:0,376,5016
Chr01 284ss.6 T A 5219.94PASS AC=6;AF=0.130 GT:AD:DP:GQ:PL 0/0:14,0:14:36:0,36,491 0/0:135,0:135:99:0,370,4920
Chr01 871ss.10 C T 24370.1PASS AC=32;AF=0.696 GT:AD:DP:GQ:PL 1/1:0,10:10:24:328,24,0 0/0:88,0:88:99:0,244,3212
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25. r/qtlによるImputation
fill.geno : 欠測を補完 methodの選択
https://www.rdocumentation.org/packages/qtl/versions/1.41-6/topics/fill.geno
imp
impute using a single simulation replicate
from sim.geno
sim.geno
argmax
Viterbi algorithm, as implemented in
argmax.geno
argmax.geno
no_dbl_XO
simply filling in missing genotypes between
markers with matching genotypes
maxmarginal
choosing (at each marker) the genotype
with maximal marginal probability
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29. 高標高×低標高交雑に由来するトドマツ分離集団を用いた
RAD-Seqによる連鎖地図構築・QTL解析
Genetic mapping of local adaptation along the altitudinal gradient in Abies sachalinensis
Goto S, Kajiya-Kanegae H, Ishizuka W, Kitamura K, Ueno S, Hisamoto Y, Kudoh H,
Yasugi M, Nagano AJ, Iwata H
Tree Genetics & Genomes (2017) 13: 104.
https://doi.org/10.1007/s11295-017-1191-3
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45. TASSEL Imputation
FILLIN
all types of populations but optimized for those with higher inbreeding coefficients
FSFHap
optimized for finding recombination break points in full-sib families
LD-kNNi
k-nearest neighbor genotype imputation method (for unordered markers)
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