Abstract

                                With the view of determining the mode of inheritance of stripe rust resistance in some semi dwarf Mexican varieties and a tall Punjab strain which are extensively used in breeding programmes at Gurdaspur, these studies were made. Resistance in Kalyan Sona and Lerma Rojo was found to be dominant, whereas in WG. 142 and S 339 the character was found to be recessive. Resistance of Kalyan Sona and Lerma Rojo was conditioned by a single dominant gene. Resistance in WG. 142 and S 339 was found to be controlled by a recessive gene pair. Kalyan Sona and Lerma Rojo were found to possess two nonallalic resistance genes each capable of conferring complete resistance.

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