Novel Methods to Optimize Genotypic Imputation for Low‐Coverage, Next‐Generation Sequence Data in Crop Plants

  • Kelly Swarts
    Dep. of Plant Breeding and Genetics 175 Biotechnology Bldg. Cornell Univ. Ithaca NY 14853
  • Huihui Li
    Institute of Crop Science and CIMMYT‐China Office, Chinese Academy of Agricultural Sciences No. 12 Zhongguancun South St. Beijing 100081 China
  • J. Alberto Romero Navarro
    Dep. of Plant Breeding and Genetics and CIMMYT 175 Biotechnology Bldg. Cornell Univ. Ithaca NY 14853
  • Dong An
    China Agricultural Univ., College of Information and Electrical Engineering No. 17 Tinghua East Rd. Beijing China 100083
  • Maria Cinta Romay
    Inst. for Genomic Diversity 175 Biotechnology Bldg., Cornell Univ. Ithaca NY 14853
  • Sarah Hearne
    CIMMYT Km. 45 Carretera Mexico‐Veracruz, El Batán, Texcoco Edo. de Mexico CP 56237 Mexico
  • Charlotte Acharya
    Inst. for Genomic Diversity 175 Biotechnology Bldg., Cornell Univ. Ithaca NY 14853
  • Jeffrey C. Glaubitz
    Inst. for Genomic Diversity 175 Biotechnology Bldg., Cornell Univ. Ithaca NY 14853
  • Sharon Mitchell
    Inst. for Genomic Diversity 175 Biotechnology Bldg., Cornell Univ. Ithaca NY 14853
  • Robert J. Elshire
    AgResearch Limited, Grasslands Research Centre Tennent Dr. Palmerston North New Zealand 4442
  • Edward S. Buckler
    USDA‐ARS, Institute for Genomic Diversity, and Dep. of Plant Breeding and Genetics 159 Biotechnology Bldg. Cornell Univ. Ithaca NY 14853
  • Peter J. Bradbury
    USDA‐ARS 409 Bradfield Hall, Cornell Univ. Ithaca NY 14853

説明

<jats:p>Next‐generation sequencing technology such as genotyping‐by‐sequencing (GBS) made low‐cost, but often low‐coverage, whole‐genome sequencing widely available. Extensive inbreeding in crop plants provides an untapped, high quality source of phased haplotypes for imputing missing genotypes. We introduce Full‐Sib Family Haplotype Imputation (FSFHap), optimized for full‐sib populations, and a generalized method, Fast Inbred Line Library ImputatioN (FILLIN), to rapidly and accurately impute missing genotypes in GBS‐type data with ordered markers. FSFHap and FILLIN impute missing genotypes with high accuracy in GBS‐genotyped maize (<jats:italic>Zea mays</jats:italic> L.) inbred lines and breeding populations, while Beagle v. 4 is still preferable for diverse heterozygous populations. FILLIN and FSFHap are implemented in TASSEL 5.0.</jats:p>

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