Wheat Breeding Substation, I.A.R.I., Simla
The resistance of Cometa Klein against races 13 and H of P. glumarum Eriks. and Henn., in crosses with Ridley wheat is controlled by two pairs of complementary genes, both of which are contributed by the resistant parent. The genes contributing to resistance against the two races, however, appear to be different.
The inheritance of resistance of Rio Negro to race 13 of yellow rust, in crosses with Pb.C. 518, revealed that interaction of a gene for resistance and an inhibitory gene was involved.