Changing Regularity Analysis of Cold-resistant Physiology Targets about Parthenocissus Plants Cold-Resistant Ability of Kernel Apricot Induced by Cold-resistant Agents during Flower Period A New Male Sterility Savoy Hybrid‘Huiwu 11’ BREEDING COLD-RESISTANT BREEDS OF GRAPE WITH CROSS OF BETWEEN VITIS AMURENSIS RUPR.AND BETTER BREEDS