QTL Mapping for Important Agronomic Traits in Synthetic Hexaploid Wheat Derived from Aegiliops tauschii ssp. tauschii

Ma YU; Guo-yue CHEN; Lian-quan ZHANG; Ya-xi LIU; Deng-cai LIU; Ji-rui WANG; Zhi-en PU; Li ZHANG; Xiu-jin LAN; Yu-ming WEI; Chun-ji LIU; You-liang ZHENG

Journal of Integrative Agriculture (Sep 2014)

QTL Mapping for Important Agronomic Traits in Synthetic Hexaploid Wheat Derived from Aegiliops tauschii ssp. tauschii

Ma YU,
Guo-yue CHEN,
Lian-quan ZHANG,
Ya-xi LIU,
Deng-cai LIU,
Ji-rui WANG,
Zhi-en PU,
Li ZHANG,
Xiu-jin LAN,
Yu-ming WEI,
Chun-ji LIU,
You-liang ZHENG

Affiliations

Ma YU: Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R. China; School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, P.R. China; YU Ma
Guo-yue CHEN: Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R. China
Lian-quan ZHANG: Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R. China
Ya-xi LIU: Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R. China
Deng-cai LIU: Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R. China
Ji-rui WANG: Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R. China
Zhi-en PU: Agronomy College, Sichuan Agricultural University, Chengdu 611130, P.R. China
Li ZHANG: Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R. China
Xiu-jin LAN: Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R. China
Yu-ming WEI: Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R. China
Chun-ji LIU: CSIRO Plant Industry, St Lucia, QLD 4067, Australia
You-liang ZHENG: Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R. China; Correspondence ZHENG You-liang, Tel: +86-835-2882007, Fax: +86-835-2883153

Journal volume & issue: Vol. 13, no. 9
pp. 1835 – 1844

Abstract

Read online

Aegiliops tauschii is classified into two subspecies: Ae. tauschii ssp. tauschii and Ae. tauschii ssp. strangulata. Novel genetic variations exist in Ae. tauschii ssp. tauschii that can be utilized in wheat improvement. We synthesized a hexaploid wheat genotype (SHW-L1) by crossing an Ae. tauschii ssp. tauschii accession (AS60) with a tetraploid wheat genotype (AS2255). A population consisting of 171 F8 recombinant inbred lines was developed from SHW-L1 and Chuanmai 32 to identify QTLs associated with agronomic traits. A new genetic map with high density was constructed and used to detect the QTLs for heading date, kernel width, spike length, spikelet number, and thousand kernel weight. A total of 30 putative QTLs were identified for five investigated traits. Thirteen QTLs were located on D genomes of SHW-L1, six of them showed positive effect on agronomic traits. Chromosome region flanked by wPt-6133–wPt-8134 on 2D carried five environment-independent QTLs. Each QTL accounted for more than 10% phenotypic variance. These QTLs were highly consistent across environments and should be used in wheat breeding.

Published in Journal of Integrative Agriculture

ISSN: 2095-3119 (Print); 2352-3425 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Agriculture: Agriculture (General)
Website: https://www.journals.elsevier.com/journal-of-integrative-agriculture

About the journal

Abstract

Keywords