Mr. Fernandez et al., COMPARISON OF DURUM AND COMMON WHEAT CULTIVARS FOR REACTION TO LEAF SPOTTING FUNGI IN THE FIELD, Plant disease, 80(7), 1996, pp. 793-797
Durum (Triticum turgidum var. durum) and common (T. aestivum) wheat cu
ltivars (Canada Western Red Spring, Canada Prairie Spring, and Canada
Western Soft White Spring), grown at two locations for 3 years, were a
ssessed for severity of the leaf spot complex and relative proportion
of leaf spotting fungi. The most prevalent fungi isolated were Pyrenop
hora tritici-repentis and Phaeosphaeria nodorum. Their percent isolati
on and leaf spot severity varied among years and between locations. Th
e relative prevalence of the leaf spotting fungi in the individual cul
tivars, or cultivars grouped by species, varied with year, whereas the
leaf spot score varied with location. Cultivars and species differed
in susceptibility to the leaf spotting fungi. The common wheat classes
were mostly colonized by P. nodorum and the durum wheat by P. tritici
-repentis. Cultivars, but not cultivars grouped by species, also diffe
red in the severity of the leaf spot complex. Within both durum and co
mmon wheat there were cultivars with low and high leaf spot scores.