Genetic analysis reveals four interacting loci underlying awn trait diversity in barley (Hordeum vulgare)
| Autor: | Swithin Omosuwa Owie, Zonglie Hong, Biguang Huang, Daiqing Huang, Weiren Wu |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Genetic Linkage Quantitative Trait Loci Inheritance Patterns plant sciences lcsh:Medicine Locus (genetics) Biology 01 natural sciences Genetic analysis Article 03 medical and health sciences Genetic linkage Genetic variation genetics lcsh:Science Gene Crosses Genetic Genetics Multidisciplinary Models Genetic lcsh:R Chromosome Mapping Genetic Variation Hordeum Phenotype 030104 developmental biology Epistasis lcsh:Q Hordeum vulgare Plant Structures 010606 plant biology & botany |
| Zdroj: | Scientific Reports, Vol 10, Iss 1, Pp 1-8 (2020) Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-020-69335-x |
| Popis: | Barley (Hordeum vulgare) awns contribute to grain yield, but the genetic basis of awn development remains largely unclear. Five barley lines differing in awn traits and row types were used to create four F2 populations. Genetic analyses revealed that four pairs of genes were involved in awn development: A/a (awnless/awned), B/b (awnless/awned), H/h (hooded/straight), and L/l (long/short). Of these four loci, A, H and L functioned on both central rows (CR) and lateral rows (LR) of the barley spikes, while B exhibited effect only on LR. A and B had duplicate effects on LR, and both showed dominant epistasis to loci H and L, whereas H was epistatic to L. Meanwhile, A and B were found to be genetically linked, with a row-type locus V located between them. The genetic distances of A-V and B-V were estimated to be 9.6 and 7.7 cM, respectively. Literature search suggested that A, H and V may correspond to the reported Lks1, Kap1 and Vrs1, respectively, whereas B is a novel gene specifically controlling awn development on LR, designated as Lsa1 for lateral spikelet awnless 1. The only barley homolog of wheat awn inhibitor gene B1, HORVU2Hr1G077570, is a potential candidate of Lsa1. |
| Databáze: | OpenAIRE |
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