Abstract:
A study has been made of the resistance of Oro and a derived crossbred, Orfed, to one race of Tilletia caries and three races of Tilletia foetida. Rapier and Dirk were used as the susceptible parents in crosses with Oro and Orfed respectively. Two methods were used in the genetic analysis of resistance to the four races. The frequency distribution of bunt infection in segregating F