@applenut is (was?) doing some work growing apples in the tropics. I believe he induced dormancy by defoliating the apples, so that approach may work for Asian pears. I’ve also seen reference to growers in low-elevation Taiwan grafting flower buds from high-elevation trees every year to get around the chill requirement. If you have good refrigeration, you might be able to collect scions with flower buds, store them in the fridge for a few months, then graft them back onto the tree. Sounds like a lot of work, but I know many of us on here have done more work for less payoff.
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