TDS cannot be claimed in wife's return as the interest income would be clubbed in the hands of husband so interest income is shown in husband's return because of clubbing and not in the return of wife. Therefore TDS cannot be claimed in wife's name and even if it is claimed it would be rejected since there is no corresponding income shown in her return against which TDS has been claimed.
In such cases rule 37BA comes to the rescue which provides that the deductee (wife) should file a declaration with the bank mentioning the other person's (husband) name, PAN and the reason for crediting the income in his name. Than the bank will not only credit the income in that other person's name but also deduct the TDS which can be claimed in his return.