Fine mapping qGL2H, a major locus controlling grain length in barley (Hordeum vulgare L.).
Theor Appl Genet
; 133(7): 2095-2103, 2020 Jul.
Article
em En
| MEDLINE
| ID: mdl-32193568
ABSTRACT
KEY MESSAGE A major grain length QTL on chromosome 2H was fine mapped to a 140.9 Kb region containing three genes. Increasing yield is an important target for barley breeding programs. One approach to increase yield is by enhancing individual grain weights through the regulation of grain size. Fine mapping major grain size-related quantitative trait loci is necessary for future marker-assisted selection strategies, yet studies of this nature are limited in barley. In the present study, we utilised a doubled haploid population derived from two Australian malt barley varieties, Vlamingh and Buloke, coupled with extensive genotypic and phenotypic data from three independent environments. A major grain length locus identified on chromosome 2H designated qGL2H was fine mapped to a 140.9 Kb interval. qGL2H was able to account for 25.4% of the phenotypic variation for grain length and 10.2% for grain yield. Underlying qGL2H were three high-confidence predicted genes. One of these genes encodes a MYB transcription factor and represents a promising candidate for further genetic research.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sementes
/
Hordeum
/
Mapeamento Cromossômico
/
Locos de Características Quantitativas
Tipo de estudo:
Prognostic_studies
País/Região como assunto:
Oceania
Idioma:
En
Revista:
Theor Appl Genet
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Austrália