As per Grihya Sutras, there is no practice of Mangalya Dharanam.
The important marriage ritual which consummates Marriage is holding the hand of the Bride by the Groom and doing Sapta Padi ( Joint Seven steps)..
From the bride's side it is Kanya Danam.
From the Groom's side it is Pani Grahanam ( Holding of Hand)
But there has been the practice of Mangalya dharanam for a long period.