Dear Sri Sandeepspatkar,
Upto my knowledge, Silver oak is very much suitable for Pepper vine climbing support.
In Malnadu area of Karnataka, most of the pepper farmers are using silver Oak tree as support tree .
The average age of the climbing tree should be more than the age span of pepper vine tree. Pepper will live more than 35 to 40 years and the silver Oak tree lives very much more than that. Apart from that, the value of the Silver Oak tree will very tasty after the said 40 years life.Gets very good value.You pl visit Malnadu area of Karnataka state.
As far as Melia Dubia tree is concerned, upto my knowledge , its life is less and tree size comes very much bulky ,even within 5 years. Isuggest you that selecting Melia Dubia tree is a risky and no one till now, upto my knowledge , are using melia dubia tree as vine suppport tree.
All the best, g.p.rao, farmer