A new dry red wine grape variety“ZuoHong-1”strain 84-14-18,84-16-77,87-8-96 and dry white wine grape variety strain 79-32-32 which can overwinter in the openair in the frigid zoneof northeast China have beendeveloped by selection through interspecific hybridization with parents of cold-resistant wild grapevine and non cold-resistant Vinifera wine variety.This study puts forth a new theory in the reseach of cold-resistant breeding,and gives some di...