Association analysis of physiological traits in spring barley (Hordeum vulgare L.) under water-deficit conditions

被引：6
|
作者：
Jabbari, Mitra [1 ]
Fakheri, Barat Ali [2 ]
Aghnoum, Reza [3 ]
Darvishzadeh, Reza [4 ]
Mahdi Nezhad, Nafiseh [2 ]
Ataei, Reza [5 ]
Koochakpour, Zahra [2 ]
Razi, Mitra [4 ]
机构：
[1] Higher Educ Complex Saravan, Fac Agr, Saravan, Sistan & Baluch, Iran
[2] Univ Zabol, Fac Agr, Dept Plant Breeding & Biotechnol, Saravan, Sistan & Baluch, Iran
[3] AREEO, Khorasan Razavi Agr & Nat Resources Res & Educ Ct, Seed & Plant Improvement Res Dept, Mashhad, Razavi Khorasan, Iran
[4] Urmia Univ, Fac Agr & Nat Resources, Dept Plant Prod & Genet, Orumiyeh, Iran
[5] Agr Res Educ & Extens Org AREEO, Seed & Plant Improvement Inst, Karaj, Iran
来源：
FOOD SCIENCE & NUTRITION | 2021年 / 9卷 / 03期
关键词：
barley; drought; linkage disequilibrium; mixed linear model; physiological traits; GENOME-WIDE ASSOCIATION; TOLERANCE RELATED TRAITS; LINKAGE DISEQUILIBRIUM; OSMOTIC ADJUSTMENT; PARTIAL RESISTANCE; DROUGHT; POPULATION; STRESS; IDENTIFICATION; SALINITY;
D O I：
10.1002/fsn3.2161
中图分类号：
TS2 [食品工业];
学科分类号：
0832 ;
摘要：
In the present study, 148 commercial barley cultivars were assessed by 14 AFLP primer combinations and 32 SSRs primer pairs. Population structure, linkage disequilibrium, and genomic regions associated with physiological traits under drought stress were investigated. The phenotypic results showed a high level of diversity between studied cultivars. The studied barley cultivars were divided into two subgroups. Linkage disequilibrium analysis revealed that r(2) values among all possible marker pairs have an average value of 0.0178. The mixed linear model procedure showed that totally, 207 loci had a significant association with investigated traits. 120 QTLs out of 207 were detected for traits under normal conditions, and 90 QTLs were detected for traits under drought stress conditions. Identified QTLs after validation and transferring to SCAR markers in the case of AFLPs can be used to develop MAS strategies for barley breeding programs. Some common markers were identified for a particular trait or some traits across normal and drought stress conditions. These markers show low interaction with environmental conditions (stable markers); therefore, selection by them for a trait under normal conditions will improve the trait value under stress conditions, too.
引用
收藏
页码：1761 / 1779
页数：19
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