Wheat is the heterogenous polyploid plant with large chromosomes and high level of repetitive sequences.These characters have limited the progress of wheat genomics studies.

• 摘要小麦是异源多倍体植物，具有大的染色体组，并且基因组中重复序列所占比例较高，这些特征限制了小麦基因组研究的进展。