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Wild barley shows a wider diversity in genes regulating heading date compared with cultivated barley

Citation

Hu, H and Ahmed, I and Choudhury, S and Fan, Y and Shabala, S and Zhang, G and Harrison, M and Meinke, H and Zhou, M, Wild barley shows a wider diversity in genes regulating heading date compared with cultivated barley, Euphytica, 215 Article 75. ISSN 0014-2336 (2019) [Refereed Article]


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Copyright Springer Nature B.V. 2019

DOI: doi:10.1007/s10681-019-2398-1

Abstract

Heading date (HD) is an important agronomic trait that influences plant adaptability to varying environment and, ultimately, grain yield. In this study, two doubled haploid (DH) populations were used to identify new QTL for HD. One of the DH populations is originated from a cross between an Australian malting barley cv. Franklin and a wild barley accession TAM407227 and the other one is from the cross between a Syrian wild barley SYR01 and an Australian malting barley cv. Gairdner. Using three times of sowing (TOS) differing in daylength and temperature, we investigated quantitative trait loci (QTL) controlling HD from both populations. Fourteen QTL were identified for HD from different populations and sowing dates. The expression of HD related genes varied with the TOS, suggesting a significant QTL  environment interaction. By comparing the positions of previously mapped HD genes and those of QTL detected in this population, we found that eleven of the fourteen QTL identified in this study were located at similar positions to those reported genes for HD. Among the three new potential QTL, one was located at 73.5 cM on chromosome 2H, explaining 19.2% and 4.6% HD of DH lines in spring and summer growing, respectively. The wild barley parent TAM407227 contributed the early maturity allele. HORVU2Hr1G088460 within the interval of QTL could be the candidate gene. The second new QTL was identified on chromosome 3H from a summer sowing trial and the third one on chromosome 4H affected HD of DH lines only under spring sowing condition. These new QTL identified will provide alternative genetic resources for plant breeders developing barley varieties with improved HD adaptability to varying environments.

Item Details

Item Type:Refereed Article
Keywords:barley, wild, diversity, cultivated barley, VRN, QTL, Eps, time of sowing, anthesis, heading date, flowering, double haploid, quantitative trait locus
Research Division:Agricultural and Veterinary Sciences
Research Group:Crop and Pasture Production
Research Field:Crop and Pasture Improvement (Selection and Breeding)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Winter Grains and Oilseeds
Objective Field:Barley
UTAS Author:Hu, H (Mr Hongliang Hu)
UTAS Author:Ahmed, I (Mr Ibrahim Ahmed)
UTAS Author:Choudhury, S (Mrs Shormin Choudhury)
UTAS Author:Fan, Y (Miss Yun Fan)
UTAS Author:Shabala, S (Professor Sergey Shabala)
UTAS Author:Harrison, M (Dr Matthew Harrison)
UTAS Author:Meinke, H (Professor Holger Meinke)
UTAS Author:Zhou, M (Professor Meixue Zhou)
ID Code:131262
Year Published:2019
Deposited By:TIA - Research Institute
Deposited On:2019-03-11
Last Modified:2019-04-29
Downloads:0

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