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 cerea...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.展开更多
Durum wheat(Triticum durum Desf.,2n=28,AABB),which is mainly used to make pasta,is the second cultivated wheat variety worldwide.However,the durum wheat production is severely affected by a number of diseases,such as ...Durum wheat(Triticum durum Desf.,2n=28,AABB),which is mainly used to make pasta,is the second cultivated wheat variety worldwide.However,the durum wheat production is severely affected by a number of diseases,such as Fusarium head blight(FHB)and stem rust(Klindworth et al.,2017;Zhao et al.,2018).Thinopyrum elongatum(2n=4x=28),a close relative of wheat.展开更多
基金supported by the National High Technology Research and Development Program of China (No. 2010AA100101)
文摘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.
基金supported by the’Strategic Priority Research Program’of the Chinese Academy of Sciences(XDA08010204)the National Key Research and Development Program of China(2016YFD0102001).
文摘Durum wheat(Triticum durum Desf.,2n=28,AABB),which is mainly used to make pasta,is the second cultivated wheat variety worldwide.However,the durum wheat production is severely affected by a number of diseases,such as Fusarium head blight(FHB)and stem rust(Klindworth et al.,2017;Zhao et al.,2018).Thinopyrum elongatum(2n=4x=28),a close relative of wheat.
