Abstract
Synthetic hexaploid wheat (SHW) is a valuable resource for breeding because it possesses more desirable traits, such as better yield and abiotic and biotic stress tolerance than common wheat. In this study, our group developed a SHW line, named ‘SynDT’, which has markedly better characteristics than Korean bread wheat ‘Keumkang’. The SynDT line is thermotolerant as it rapidly expresses heat shock proteins under heat stress. In addition, this line exhibits resistance to leaf rust by inducing the expression of antifungal enzymes, mainly chitinase, along with the rapid and high expression of pathogen-related genes. Moreover, it possesses the favorable traits of its parent wheat lines Triticum durum #24 and Aegilops tauschii #52. Therefore, the SynDT wheat line can be used as a breeding material for improving local common wheat cultivars.
Highlights
Hexaploid common wheat or bread wheat (Triticum aestivum L.; hexaploid genome =AABBDD) is a crucial cereal crop worldwide
In comparison to Keumkang, a bread wheat cultivar that is widely grown in Korea, the Synthetic hexaploid wheat (SHW) line developed in the present study was tolerant to heat stress (HS) and leaf rust (LR)
Through the preliminary PCR experiments, we found that this marker is only shown bands in the Ae
Summary
Hexaploid common wheat or bread wheat (Triticum aestivum L.; hexaploid genome =AABBDD) is a crucial cereal crop worldwide. Sustainable wheat production is threatened as wheat productivity has not improved significantly over time [1]. This challenge can be explained by the narrow genetic diversity of bread wheat, which is the result of a bottleneck event during its evolution, as only a few accessions of the donor species were involved in its origin and evolution [2]. SHW is a valuable source of genetic variability, with favorable traits, such as improved yield and abiotic and biotic stress tolerance, which are the primary targets of modern breeding strategies [3]. A previous study on genetic diversity in SHW has reported that this breed has higher levels of diverse amplified fragment length polymorphisms (39%) than common bread wheat (12–21%) [4]. The well-known representative SHW line, “Chuanmai 42”, has a high average yield, and its synthetic derivative lines (SDLs) are commonly used in wheat breeding [5]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
