Host Specialization of Erysiphe graminis Tritici

Publisher Website
Google Scholar
Abstract
A study of E. graminis tritici was made with collections from Lafayette, Indiana, and Ann Arbor, Michigan, from 1923-1932. As a result of inoculations of many vars. of wheat and other grasses it is concluded that Triticum vulgare, T. compactum, T. spelta, T. durum, and T. turgidum are for the most part susceptible in the seedling stage. However, more or less resistant vars. were found in all of these species. The vars. Chul (C. I. 2227), Dixon (C. I. 6295), Huron (C. I. 3315), Red Fern, Sonora (C. I. 4293), and Illinois No. 1 selections 35, 47 and 59 were outstanding for pronounced resistance. Triticum dicoccum, T. monococcum, T. dicoccoides, T. persicum, T. timophevii were for the most part resistant. A few vars. of T. dicoccum were more or less susceptible. Species of the wild grasses (Aegilops, Agrostis, Agropyron, Bromus, Festuca, Elymus, Hordeum, Hystrix, Secale, Sitanion) were mostly highly resistant. 2 physiologic forms were distinguished in the race tritici by the reactions of the vars. Norka (C. I. 4377) and Axminster (C. I. 1839). To p. f. 1 these vars. were highly resistant (type 0); to p. f. 2, they were very susceptible (type 4).

This publication has 0 references indexed in Scilit: