Oligogenic Inheritance of Length of Latent Period in Six Slow Leaf-Rusting Wheat Cultivars

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Abstract
The inheritance of latent period of Puccinia recondita on wheat was studied in crosses of slow- and fast-rusting cultivars inoculated with P. recondita in the greenhouse. Analyses of F3 families and F1 backcrosses for ''Morocco''/''SW 72469-6'' and ''L574-I''/''Suwon 92'' showed that the long latent period in slow-rusting wheats ''SW 72469-6'' and ''L574-I'' was conditioned by 2 partially recessive genes with equal effects. Latent period and uredinium size were negatively correlated. The long latent period in ''CI 10745'' and ''Milyang 8-6'' were conditioned by 2 recessive genes with equal effect. The long latent period was controlled by 1 or 2 recessive genes in P65113B6, and by 3 recessive genes in P6028A2.