Txhua txhua xyoo, ua tsaug rau lub dag zog ntawm breeders, ntau thiab ntau grape ntau yam tshwm. Qhov no yog qhov zoo tshaj, txij li niaj hnub kws tshawb fawb yeej ua kom qhov kev ntseeg ntawm cov nroj tsuag no, tsim kom muaj "super-variety." Hmoov tsis, tab sis nyob rau hauv haiv neeg rau sustainability, qhov zoo ntawm cov txiv hmab, tshwj xeeb tshaj yog cov tsos ntawm pawg, yog feem ntau tso tawm los ntawm kev mloog.
