SGB, an alternative mode of investment to physical gold, was launched in November last year.
"A large number of applications have been received by banks and post offices. To enable smooth uploading of applications into RBI's E-Kuber system, particularly by post offices, it has since been decided to shift the issue date of the Sovereign Gold Bond from September 23, 2016, to September 30, 2016," it said.
"These numbers are likely to go up further as the receiving offices are still in the process of uploading information of a huge rush of applications received on the last day," the ministry said in a statement.
The fifth tranche of the bond was open to subscription from September 1 to September 9, 2016. The bonds were to be issued on September 23.
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The aggressive marketing of the product by the government including through its receiving offices such as banks, post offices, NSE and BSE helped in eliciting such an encouraging response, the ministry said.
The total subscription in first four tranches was Rs 2,239 crore corresponding to 7.85 tonnes of gold.
SGB earns an interest rate of 2.75 per cent per annum, semi-annually payable on initial investment.