干旱区生态环境知识资源中心(Arid): Screening for drought tolerance and genetic diversity of wheat varieties using agronomic and molecular markers

Arid

DOI	10.1007/s11033-024-09340-9
	Screening for drought tolerance and genetic diversity of wheat varieties using agronomic and molecular markers
	Guizani, Asma; Babay, Elyes; Askri, Hend; Sialer, Mariella Finetti; Gharbi, Fatma
通讯作者	Guizani, A
来源期刊	MOLECULAR BIOLOGY REPORTS
ISSN	0301-4851
EISSN	1573-4978
出版年	2024
卷号	51 期号:1
英文摘要	BackgroundThe future predictions for frequent and severe droughts will represent a significant threat to wheat yield and food security. In this context, breeding has proven to be the most efficient approach to enhance wheat productivity in dry environments.Methods and resultsIn this study, both agronomic and molecular-based approaches were used to evaluate the response of twenty-eight Tunisian wheat varieties to drought stress. The primary objective was to screen these varieties for drought tolerance using molecular and agro-morphological markers. All varieties were significantly affected by drought stress regarding various traits including total dry matter, straw length, flag leaf area, number of senescent leaves, SPAD value, grain yield and grain number. Furthermore, substantial variability in drought-stress tolerance was observed among wheat genotypes. The cluster analysis and principal component analyses confirmed the existence of genotypic variation in growth and yield impairments induced by drought. The stress susceptibility index (SSI) and tolerance index (TOL) proved to be the most effective indices and were strongly correlated with the varying levels of genotypic tolerance. The genotyping evaluation resulted in the amplification of 101 alleles using highly polymorphic 12 SSR markers, showed an average polymorphism of 74%.ConclusionsTaken together, the combination of agronomic and molecular approaches revealed that Karim, Td7, D117 and Utique are the most drought-tolerant wheat varieties. These varieties are particularly promising candidates for genetic improvements and can be utilized as potential genitors for future breeding programs in arid and semi-arid regions.
英文关键词	Drought Wheat productivity SSR Clustering Polymorphism Breeding
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001189632900006
WOS关键词	GRAIN-YIELD ; STRESS ; RESISTANCE ; GENOTYPES ; CULTIVARS ; SELECTION ; LINES ; HEAT
WOS类目	Biochemistry & Molecular Biology
WOS研究方向	Biochemistry & Molecular Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404927
推荐引用方式 GB/T 7714	Guizani, Asma,Babay, Elyes,Askri, Hend,et al. Screening for drought tolerance and genetic diversity of wheat varieties using agronomic and molecular markers[J],2024,51(1).
APA	Guizani, Asma,Babay, Elyes,Askri, Hend,Sialer, Mariella Finetti,&Gharbi, Fatma.(2024).Screening for drought tolerance and genetic diversity of wheat varieties using agronomic and molecular markers.MOLECULAR BIOLOGY REPORTS,51(1).
MLA	Guizani, Asma,et al."Screening for drought tolerance and genetic diversity of wheat varieties using agronomic and molecular markers".MOLECULAR BIOLOGY REPORTS 51.1(2024).