Characterization and Genome Changes of New Amphiploids from Wheat Wide Hybridization
The introduction of alien genes or chromosome fragments from wild related species into wheat (Triticum spp.) has been considered valuable for wheat breeding (Valkoun,2001).Several relatives,such as Secale cereale (Gupta and Shepherd,1993;Ma et al.,2000),Thinopyrum elongatum (Liu et al.,2008),Th.intermedium (Cao et al.,2014) and Th.ponticum (Li et al.,2008) showed distinct applications of introgression of interesting genes or traits into wheat.However,there are still some challenges in using these genetic resources.The introgressed alien fragments often bring genes with potentially negative impacts on the traits.In this letter,we mainly focus on multi-strategies for synthesis of polyploids between wheat and rye,Th.elongatum,Th.intermedium and Th.ponticum.We have successfully selected different novel ploidy triticale and trititrigia lines which carried excellent disease-resistance genes and could provide essential genetic resources for wheat breeding.
42
This work was supported by the National High Technology Research and Development Program of China No.2010AA100101.
2015-10-08（万方平台首次上网日期，不代表论文的发表时间）
459-461
