ABSTRACT: The evolution in virulence of Puccinia coronata f. sp. avenae has challenged the genetic resistance to crown rust oat genotypes. New sources are constantly required for yield stabilization and costs reduction. This study aimed characterize genotypes disease´s productive economic impact. Experiments were conducted two environments, with without chemical control. Resistance was measured...

— A new imergeneric wood warbler hybrid {Panda americana % Dendroica coronata) is described from a male in first basic plumage taken during fall migration on the Gulf" coast of Florida. The hybrid is nearly intermediate between the parental species in plumage pattern and color, but is more similar to its smaller parent. P. americana. in size and shape. When Gray's compendium of avian hybrids wa...