It really doesnt matter if the marriage certificate is from panchayat or registrar all you need to do is get it attested first from Ministry of external affairs India in New Delhi there are people doing it here for QAR 500.00 cant tell thier credentials I havent taken any services also after it is attested you need to get it attested from Indian embassy in Doha after that from MOI Qatar. Then you can apply for your wifes family visit visa.