The dollar fell back against the euro in Asia Wednesday following an earlier buying spree of the greenback triggered by a rise in US bond yields, dealers said.

The euro rose to 1.3128 dollars in Tokyo morning trade against 1.3116 dollars in New York late Tuesday. The single European currency was marginally higher at 108.04 yen against 108.00 yen.

The dollar fell to 82.29 yen from 82.43 yen.

The euro was down against the dollar on broad demand for the US currency as Treasury yields rose overnight following a lacklustre sale of the US five-year notes, Satoshi Tate, senior dealer at Mizuho Corporate Bank, told Dow Jones Newswires.

The poor bond sale triggered "the last round of dollar-buying" this year, Tate said.

The yen showed strength against the dollar supported in part by month-end dollar sales by Japanese exporters, dealers said.

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