Pear
trees definitely benefit from cross-pollination.
seeds of fruit
trees produce
seedlings of varying quality, most of which will not be as good as the parents. Also,
seedling trees would grow into full sized "standard"
trees which would require tending with ladders and lots of climbing.
I would recommend buying a named variety of pear
tree on a dwarfing rootstock. You would know what you were getting and being dwarf makes the care of the
trees so much easier.
This of course would also depend on whether or not pears are suited to your climate. Pears and apples are more suited to temperate regions. You are probably hot and dry. There may be certain varieties that would be acceptable, however. I would do some research on this before attempting it.
Having said all this, I have a friend who is nursing a small apple
seedling. Simply for the fun of experimentation, you could
plant some
seeds in small pots or probably a cell pack would be better. The
seeds will need a 2-3 month period to encourage germination. Place them in a little moist sand or potting soil in the refrigerator and then
plant them in a cell pack after 3 months or so.
One more thought, pear and apple
trees need a certain amount of cold weather to stimulate bloom and fruit set. Certain varieties require less of a cool period than others, but if they don't receive enough cold temperatures, they will never fruit.