Genome-Wide Association Study Reveals a New QTL for Salinity Tolerance in Barley (Hordeum vulgare L.)

被引：51

作者：

Fan, Yun ^{[1
,2
]}

Zhou, Gaofeng ^{[3
]}

Shabala, Sergey ^{[1
,2
]}

Chen, Zhong-Hua ^{[4
]}

Cai, Shengguan ^{[4
]}

Li, Chengdao ^{[3
]}

Zhou, Meixue ^{[1
,2
]}

机构：

[1] Univ Tasmania, Sch Land & Food, Kings Meadows, Tas, Australia

[2] Univ Tasmania, Tasmanian Inst Agr, Kings Meadows, Tas, Australia

[3] Murdoch Univ, Western Australian State Agr Biotechnol Ctr, Murdoch, WA 6150, Australia

[4] Univ Western Sydney, Sch Sci & Hlth, Penrith, NSW 1797, Australia

来源：

FRONTIERS IN PLANT SCIENCE | 2016年 / 7卷

关键词：

genome wide association study; QTL mapping; evaluation methods; salinity tolerance; barley; SALT TOLERANCE; DOMESTICATION; IMPROVEMENT; TRAITS; GENES; HALOPHYTES; DIVERSITY; SOFTWARE; HISTORY; PLANTS;

D O I：

10.3389/fpls.2016.00946

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Salinity stress is one of the most severe abiotic stresses that affect agricultural production. Genome wide association study (GWAS) has been widely used to detect genetic variations in extensive natural accessions with more recombination and higher resolution. In this study, 206 barley accessions collected worldwide were genotyped with 408 Diversity Arrays Technology (DArT) markers and evaluated for salinity stress tolerance using salinity tolerance score a reliable trait developed in our previous work. GWAS for salinity tolerance had been conducted through a general linkage model and a mixed linkage model based on population structure and kinship. A total of 24 significant marker-trait associations were identified. A QTL on 4H with the nearest marker of bPb-9668 was consistently detected in all different methods. This QTL has not been reported before and is worth to be further confirmed with bi-parental populations.

引用

页数：10

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