Genetic Analysis for Scab Resistance in Five Wheat Variefies, PHJZM,HHDTB,CYHM,YGFZ and WN2 THE EXPLORING ANALYSIS OF THE RESISTANCE COMPONENTS TO THE RATE OF SPREADING OF SCAB IN WHEAT VARIETIES The analyses on the characters of wheat cultivars with durable resistance to wheat strip rust (Puccinia striiformis West.) in China