Kerr, E. A., J. W. Potter and Z. A. Patrick Linkage relations of Cf-2 and Mi. Langford (Can. J. Res. C, 15:108-128, 1937) reported that Cf-2 - the Vetomold type of resistance to Cladosporium fulvum - was linked with c at a distance of 43 crossover units.   His data also show 43.1 units between Cf-2-and j. Gilbert (TGC 8:15-17, 1958) has shown that nematode resistance Mi is about 2 units from yv and about 40 units from c. From these data it has been assumed that Cf-2 and Mi are near each other on chromosome 6. In 1962 we began a minor but continual experiment to combine these economically desirable genes into one stock by growing up to 48 populations twice a year. In the spring crop of 1972 we succeeded in getting a line that was homozygous resistant for Cf-2. The following season a line homozygous for both resistances was obtained. Small backcross populations with rvt and c were produced. Those that could be reliably scored for Cf-2 and Mi gave the results shown in the table.