Graminicolous Fungi of Virginia: Fungi in Collections 1995-2003

Fungus-grass associations recognized in Virginia from 1995 to 2003 are recorded. Many associations are new to the United States (59), eastern United States (2), and Virginia (21); others extend the known distribution for those previously discovered. These reports contribute to the natural history of Virginia

Graminicolous Fungi of Virginia: Fungi in Collections 2004-2007

Fungus-grass associations recognized in Virginia from 2004 to 2007 are recorded. Many associations are new to the United States (U), eastern United States (EU) and Virginia (V); other associations extend the known distribution of those previously discovered. These reports contribute further to knowledge of the mycoflora of Virginia

Research Notes : United States : Genetics of reaction to soybean mosaic virus (SMV) in the cultivars \u27Kawnggyo\u27, \u27Marshall\u27, and PI 96983

Several genes conditioning resistance to SMV have been found and some have been assigned gene symbols. In addition, a series of SMV strain groups has been differentiated by their interactions with a selected group of culti-vars (Cho and Goodman, 1979; Lim, 1985). We have undertaken a study of the genes conditioning the reactions of certain differential cultivars to SMV in an attempt to establish their relationships with symbolized genes

Research Notes : United States : Genetics of reaction to soybean mosaic virus (SMV) in cultivars exhibiting differential reaction to SMV strains.

A series of seven differential strain groups of SMV, labelled Gl to G7, were reported by Cho and Goodman (1979). Buzzell and Tu (1984) added another strain, G7A, and Lim (1985) added an additional strain, Cl4. We have been studying the genetic relationships among the cultivars that define the strain groups. Our intial studies involved the cultivars \u27Marshall\u27, \u27Kwanggyo\u27, \u27York\u27, \u27Ogden\u27, and PI 96.983, which differentiate the seven strain groups of Cho and Goodman