Title: Title specific response to salt stress in the late stage of growth of coloured wheat cultivars to determine salt tolerant varieties

Biography:

Sonia Mbarki has completed her PhD at December 2016 University of Sciences Tunisia (FST) and Postdoctoral Studies from Faculty of Agrobiology and Natural Resources in Prague Czech republic 2019. She does her PhD in collaboration between Tunisia Lab and Spain Lab of Agrobiology. She has position as researcher in INRGREF Tunisia, a member of ATE association in Tunisia. She has published more than 10 papers in reputed journals and has been serving as Reviewer member of repute journals.

Abstract

The The aim of this work is to study the effect of salt stress on the development of adaptive reactions and growth parameters of different pigmented wheat genotypes to estimate parameters that can help choose salt-tolerant wheat cultivars. The different pigmented wheat genotypes have revealed variation in the anthocyanin content, which may affect the development of adaptive reactions under increasing salinity stress. In the early stage of treatment with salt at a lower NaCl concentration (100 mM), anthocyanins and proline accumulate, which shows rapid development of the stress reaction. A dose-dependent increase in flavonol content has been observed for wheat genotypes with more intensepurple-blue pigmentation after treatment with 150 mM and 200 mM NaCl.The content of Na⁺ and K⁺ obtained at different levels of salinity on the basis of DW was more than 3 times greater than the control, with a significant increase of both ions under salt stress. The purple-blue pigmented wheat genotypes are characterized by higher anthocyanin content after salt stress treatment,resulting in significantly higher dry matter production.