FAO/IAEA International Symposium on Plant Mutation Breeding and Biotechnology

ESTABLISHMENT OF WHEAT - THINOPYRUM ELONGATUM 7E CHROMOSOME TRANSLOCATION LINES WITH FUSARIUM HEAD BLIGHT RESISTANCE BY RADIATION

Not scheduled

20m

IAEA, Vienna

Oral Mutation breeding for adaptation to climate change in seed propagated crops

Speaker

Dr Shqiang Chen (CCP)

Description

Thinopyrum elongatum is one of the important relatives of wheat. It is favoured by many researchers for the disease resistant genes that exist in its E genome. Some studies have shown that the 7E chromosome of T. elongatum contains resistance genes related to Fusarium head blight (FHB). Therefore, establishment of wheat – T. elongatum 7E chromosome translocation lines with FHB resistance is very important. This study was conducted to establish (wheat) Triticum sp./T. elongatum 7E chromosome translocation lines from Yangmai16 × DS7E(7A or 7B or 7D) based on 60Co radiation induced mutation. Then, we selected the translocation lines by screening for FHB resistance, T. elongatum 7E chromosome with specific molecular markers and genomic in situ hybridization (GISH). Finally, we obtained the wheat/Th. elongatum 7E chromosome translocation lines with FHB resistance and found through further study, that the FHB resistance gene(s) might be located on the long arm of chromosome 7E of diploid T. elongatum. The establishment of wheat /T. elongatum 7E chromosome translocation lines with FHB resistance will provide important resistant genes and genetic stocks for wheat breeding.