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131262 - Wild barley shows a wider diversity in genes regulating heading date compared with cultivated barley - manuscript-1.pdf (309.52 kB)

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

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posted on 2023-05-20, 01:32 authored by Hu, H, Ibrahim Ahmed, Choudhury, S, Fan, Y, Sergey ShabalaSergey Shabala, Zhang, G, Matthew HarrisonMatthew Harrison, Holger MeinkeHolger Meinke, Meixue ZhouMeixue Zhou
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.

Funding

Grains Research & Development Corporation

History

Publication title

Euphytica

Volume

215

Article number

75

Number

75

Pagination

1-14

ISSN

0014-2336

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

Kluwer Academic Publ

Place of publication

Van Godewijckstraat 30, Dordrecht, Netherlands, 3311 Gz

Rights statement

?Copyright Springer Nature B.V. 2019

Repository Status

  • Restricted

Socio-economic Objectives

Barley

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