Hi There,
I would like to point out, that practically any plant in the worl can be tissue cultured or propagated by micro propagation.
However, the technique of producing the plant by tissue culture is vastly different for each plant, and the cost of production varies with the kind of plant as well.
Unless you were to produce millions of plants over several years, or if that particular variety was rare, it would be un-viable to propagate by tissue culture. Especially in case of trees, the R&D investment into finding the protocol for tissue culture, combined with long production time would make TC coconut more expensive than it is worth!