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The double round-robin population unravels the genetic architecture of grain size in barley.
Shrestha, Asis; Cosenza, Francesco; van Inghelandt, Delphine; Wu, Po-Ya; Li, Jinquan; Casale, Federico A; Weisweiler, Marius; Stich, Benjamin.
Afiliación
  • Shrestha A; Institute for Quantitative Genetics and Genomics of Plants, Biology Department, Heinrich Heine University, Dusseldorf, Germany.
  • Cosenza F; Institute for Quantitative Genetics and Genomics of Plants, Biology Department, Heinrich Heine University, Dusseldorf, Germany.
  • van Inghelandt D; Institute for Quantitative Genetics and Genomics of Plants, Biology Department, Heinrich Heine University, Dusseldorf, Germany.
  • Wu PY; Institute for Quantitative Genetics and Genomics of Plants, Biology Department, Heinrich Heine University, Dusseldorf, Germany.
  • Li J; Max Planck Institute for Plant Breeding Research, Cologne, Germany.
  • Casale FA; Institute for Quantitative Genetics and Genomics of Plants, Biology Department, Heinrich Heine University, Dusseldorf, Germany.
  • Weisweiler M; Institute for Quantitative Genetics and Genomics of Plants, Biology Department, Heinrich Heine University, Dusseldorf, Germany.
  • Stich B; Institute for Quantitative Genetics and Genomics of Plants, Biology Department, Heinrich Heine University, Dusseldorf, Germany.
J Exp Bot ; 73(22): 7344-7361, 2022 12 08.
Article en En | MEDLINE | ID: mdl-36094852
Grain number, size and weight primarily determine the yield of barley. Although the genes regulating grain number are well studied in barley, the genetic loci and the causal gene for sink capacity are poorly understood. Therefore, the primary objective of our work was to dissect the genetic architecture of grain size and weight in barley. We used a multi-parent population developed from a genetic cross between 23 diverse barley inbreds in a double round-robin design. Seed size-related parameters such as grain length, grain width, grain area and thousand-grain weight were evaluated in the HvDRR population comprising 45 recombinant inbred line sub-populations. We found significant genotypic variation for all seed size characteristics, and observed 84% or higher heritability across four environments. The quantitative trait locus (QTL) detection results indicate that the genetic architecture of grain size is more complex than previously reported. In addition, both cultivars and landraces contributed positive alleles at grain size QTLs. Candidate genes identified using genome-wide variant calling data for all parental inbred lines indicated overlapping and potential novel regulators of grain size in cereals. Furthermore, our results indicated that sink capacity was the primary determinant of grain weight in barley.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hordeum Tipo de estudio: Prognostic_studies Idioma: En Revista: J Exp Bot Asunto de la revista: BOTANICA Año: 2022 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hordeum Tipo de estudio: Prognostic_studies Idioma: En Revista: J Exp Bot Asunto de la revista: BOTANICA Año: 2022 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Reino Unido