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Genetically engineered stem rust resistance in susceptible (S) cv. Golden Promise with the Rpg1 gene. Highly resistant (HR) T1 seedlings display lower ITs against P. graminis f. sp. tritici pathotype MCC than the moderately resistant (MR) cultivar Morex and the resistant (R) cultivar Chevron. Transgenic line H228.16 segregated into 33 HR and 12 S T1 plants, whereas T1 seedlings of line H228.30 exhibited various degrees of resistance.
