干旱区生态环境知识资源中心(Arid): Identification of Genomic Regions Associated with Agronomical Traits of Bread Wheat Under Two Levels of Salinity Using GWAS

Arid

DOI	10.1007/s11105-022-01341-x
	Identification of Genomic Regions Associated with Agronomical Traits of Bread Wheat Under Two Levels of Salinity Using GWAS
	Alotaibi, Fahad S.; Al-Qthanin, Rahmah N.; Aljabri, Maha; Shehzad, Tariq; Albaqami, Mohammed; Abou-Elwafa, Salah Fatouh
通讯作者	Abou-Elwafa, SF
来源期刊	PLANT MOLECULAR BIOLOGY REPORTER
ISSN	0735-9640
EISSN	1572-9818
出版年	2022
卷号	40 期号:3 页码:595-609
英文摘要	Soil salinity is a major environmental stress that adversely affects the growth, development, productivity, and quality of crop species, in particular, in arid and semi-arid regions. Identification of chromosomal regions associated with agronomic traits under salinity stress is crucial for improving salinity tolerance in wheat. Genome-wide association study (GWAS) was employed to evaluate 289 elite lines of the Wheat Association Mapping Initiative (WAMI) population under low (LS) and high (HS) salinity conditions using 15,737 SNP markers for seven agronomical traits. The genotypes responded differently to the different environments for all traits, highlighting genetic diversity within the WAMI population in response to salt stress, where the heritability ranged from moderate (37%) to high (88%). GWAS identified 118 and 120 significant marker-trait associations (MTAs) under LS and HS conditions, respectively. Significant association of some markers with more than one phenotypic trait was observed, indicating possible pleiotropic or indirect effects. A high degree of significant linkage disequilibrium (> 52%) was observed among SNPs on different chromosomes, indicating epistatic interaction. The salt stress index (STI) exhibited a positive significant correlation to grain yield per plant (GYP) under both LS and HS conditions (R-2 =0.851-0.856). Linear regression analysis between STI and GYP under HS conditions indicated that STI is the best tolerance index for predicting high-yielding genotypes. The results present the WAMI population as a valuable source for improving yield potential for salt tolerance in wheat. Furthermore, our findings emphasize that GWAS is a powerful tool in promoting wheat breeding through accurate identification of molecular markers significantly associated with agronomic traits, which is essential for marker-assisted breeding.
英文关键词	Triticum Salt stress Salinity Tolerance index Association analysis QTL
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000789084100001
WOS关键词	SALT TOLERANCE ; DROUGHT TOLERANCE ; GENETIC-VARIATION ; RESPONSIVE GENES ; WIDE ASSOCIATION ; CHROMOSOME 3A ; GRAIN-YIELD ; BARLEY ; LOCI ; EXPRESSION
WOS类目	Biochemical Research Methods ; Plant Sciences
WOS研究方向	Biochemistry & Molecular Biology ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393970
推荐引用方式 GB/T 7714	Alotaibi, Fahad S.,Al-Qthanin, Rahmah N.,Aljabri, Maha,et al. Identification of Genomic Regions Associated with Agronomical Traits of Bread Wheat Under Two Levels of Salinity Using GWAS[J],2022,40(3):595-609.
APA	Alotaibi, Fahad S.,Al-Qthanin, Rahmah N.,Aljabri, Maha,Shehzad, Tariq,Albaqami, Mohammed,&Abou-Elwafa, Salah Fatouh.(2022).Identification of Genomic Regions Associated with Agronomical Traits of Bread Wheat Under Two Levels of Salinity Using GWAS.PLANT MOLECULAR BIOLOGY REPORTER,40(3),595-609.
MLA	Alotaibi, Fahad S.,et al."Identification of Genomic Regions Associated with Agronomical Traits of Bread Wheat Under Two Levels of Salinity Using GWAS".PLANT MOLECULAR BIOLOGY REPORTER 40.3(2022):595-609.