One hundred and two SSR primer pairs, distributed in chromosome 1A to 7A, 1B to 7B, 1D to 7D of Triticum aestivum, were investigated on Dasypyrum breviaristatum, D.villosum, wheat-Dasypyrum amphiploids and its derivatives, with the control of common wheat Chinese Spring and elite wheat cultivars. A specific polymorphic DNA fragment of about 400 bp (415 bp-long by sequenced, named Xgwm301/415) amplified by primer pair Xgwm301 was obtained in all lines containing Dasypyrum chromosomes, but there were not the case in the tested common wheat. Furthermore, PCR analysis was performed on a set of T. aestivum-Dasypyrum addition, the result showed that all the seven pairs of villosum chromosomes contain Xgwm301/415. Therefore, Xgwm301/415 is a genome-specific polymorphic DNA segment for genera of Dasypyrum, and it could be used as a molecular marker for detection of chromosomes of Dasypyrum in wheat.
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