Ornamental Plant : Muscat

Ornamental Plant For ID : Muscat : 120613 : AK-3 : Attachments (1). 1 post by 1 author.
An ornamental plant seen in one of the plant nurseries in Muscat on 30/10/2012.
Cultivated, potted plant.
Was given to understand it is Yucca.
Kindly confirm if id is correct or not.