Genomic regions influencing seminal root traits in barley

Robinson, Hannah, Hickey, Lee, Richard, Cecile, Mace, Emma, Kelly, Alison, Borrell, Andrew, Franckowiak, Jerome and Fox, Glen (2016) Genomic regions influencing seminal root traits in barley. The Plant Genome, 9 1: 1-13. doi:10.3835/plantgenome2015.03.0012


Author Robinson, Hannah
Hickey, Lee
Richard, Cecile
Mace, Emma
Kelly, Alison
Borrell, Andrew
Franckowiak, Jerome
Fox, Glen
Title Genomic regions influencing seminal root traits in barley
Journal name The Plant Genome   Check publisher's open access policy
ISSN 1940-3372
Publication date 2016-03
Sub-type Article (original research)
DOI 10.3835/plantgenome2015.03.0012
Open Access Status Not Open Access
Volume 9
Issue 1
Start page 1
End page 13
Total pages 13
Place of publication Madison, WI, United States
Publisher Crop Science Society of America
Collection year 2017
Language eng
Formatted abstract
Water availability is a major limiting factor for crop production, making drought adaptation and its many component traits a desirable attribute of plant cultivars. Previous studies in cereal crops indicate that root traits expressed at early plant developmental stages, such as seminal root angle and root number, are associated with water extraction at different depths. Here, we conducted the first study to map seminal root traits in barley (Hordeum vulgare L.). Using a recently developed high-throughput phenotyping method, a panel of 30 barley genotypes and a doubled-haploid (DH) population (ND24260 × ‘Flagship’) comprising 330 lines genotyped with diversity array technology (DArT) markers were evaluated for seminal root angle (deviation from vertical) and root number under controlled environmental conditions. A high degree of phenotypic variation was observed in the panel of 30 genotypes: 13.5 to 82.2 and 3.6 to 6.9° for root angle and root number, respectively. A similar range was observed in the DH population: 16.4 to 70.5 and 3.6 to 6.5° for root angle and number, respectively. Seven quantitative trait loci (QTL) for seminal root traits (root angle, two QTL; root number, five QTL) were detected in the DH population. A major QTL influencing both root angle and root number (RAQ2/RNQ4) was positioned on chromosome 5HL. Across-species analysis identified 10 common genes underlying root trait QTL in barley, wheat (Triticum aestivum L.), and sorghum [Sorghum bicolor (L.) Moench]. Here, we provide insight into seminal root phenotypes and provide a first look at the genetics controlling these traits in barley.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Queensland Alliance for Agriculture and Food Innovation
 
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Created: Mon, 14 Mar 2016, 12:08:40 EST by Lee Hickey on behalf of Centre for Plant Science