Unknown

Dataset Information

0

Genetic analysis reveals four interacting loci underlying awn trait diversity in barley (Hordeum vulgare).


ABSTRACT: 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.

SUBMITTER: Huang B 

PROVIDER: S-EPMC7385259 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

altmetric image

Publications

Genetic analysis reveals four interacting loci underlying awn trait diversity in barley (Hordeum vulgare).

Huang Biguang B   Huang Daiqing D   Hong Zonglie Z   Owie Swithin Omosuwa SO   Wu Weiren W  

Scientific reports 20200727 1


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 F<sub>2</sub> 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  ...[more]

Similar Datasets

| S-EPMC7144072 | biostudies-literature
| S-EPMC5022165 | biostudies-literature
| S-EPMC5674934 | biostudies-literature
| S-EPMC5568277 | biostudies-literature
| S-EPMC4584011 | biostudies-literature
| S-EPMC4857794 | biostudies-literature
| S-EPMC7216675 | biostudies-literature
2011-11-23 | GSE33773 | GEO
| S-EPMC1462393 | biostudies-other
| S-EPMC5441627 | biostudies-literature