Abstract
Seventy-six entries of wild emmer, susceptible to a culture of yellow rust, race 39E134, in the seedling stage at a low temperature-profile, were tested with the same culture for field resistance at two locations in the Netherlands. While most entries were susceptible also in the adult-plant stage, 15 showed an intermediate or resistant infection-type in Flevoland and 18 at Wageningen. In subsequent seedling tests at low and high temperature-profiles, including 20 entries which at either of the two locations had displayed field resistance, 16 entries were shown to possess temperature-sensitive genes, whereas four appeared to have true host stage-bound adult-plant resistance.
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