The government today said that the private as well as public sector will be allowed to raise resources by issuing long-term infrastructure bonds carrying tax benefits.Finance Minister Pranab Mukherjee said this at a conference on infrastructure sector in New Delhi today. Noting that funding was a major constraint, Mr Mukherjee said, the decision will help in augmenting resources of public as well as private sector for developing the country's infrastructure.In order to promote investment in the infrastructure sector, the Budget for 2010-11 proposed to exempt investment up to 20,000 rupees in long-term infrastructure bonds from income tax. The amount is in addition to the existing overall tax exemption limit of 1 lakh rupees per annum for personal income tax payers.The long-term infrastructure bonds entitled for the benefit would be notified by the government later.The investment requirement for the infrastructure sector was pegged at 500 billion dollars during the Eleventh Plan (2007-12) and is expected to double to over 1 trillion dollars in the Twelfth Plan (2012-17).