Brent Hulke Abstract: Genetic research of the sunflower research unit, USDA-ARS, in Fargo, ND, was discussed in a presentation to a group of Canadian producers, industry representatives, and scientists. Because this was an international audience, I introduced the audience to ARS and the structure of the sunflower unit, and identified our customers and collaborators. I […]
New sunflower genetics Read More »
Brent Hulke Abstract: Genetic research of the sunflower research unit, USDA-ARS, in Fargo, ND, was discussed in a presentation to a group of producers, industry representatives, and scientists. The need for sunflower genetic research is ever increasing with more insect and disease problems nationwide. Combined with a renewed interest in drought tolerance of crops in
Summary of research needs for sunflower genetics Read More »
Brent Hulke, Thomas Gulya Jr. and Jinguo Hu Abstract: Work was conducted in 2008 to determine the stalk rot resistance of RILs from the RHA 280 x RHA 801 population, as well as to begin introgression of previously identified QTL for head rot resistance into elite sunflower germplasm lines. The stalk rot RILs and their
Brent Hulke Abstract: This presentation was part of a larger panel discussion with a largely non-scientific audience that included commodity marketers and farmers of sunflower. About 200 people were in attendance. Marker-assisted technologies were explained in lay terms to the audience. Their weaknesses and strengths were discussed. A few of the projects that the sunflower
Using new techniques and applying them to sunflower’s problems – what should we do next? Read More »
Brent Hulke and Donald Wyse Abstract: Interspecific hybrids in sunflower have been used historically as sources of disease resistance. Backcrossing for several generations is required to introgress genes from hexaploid species to annual sunflower (Helianthus annuus L.). A result of this repeated backcrossing is the rapid loss of genes from the donor parent. This article
Brent Hulke Abstract: This document is a summary of a slideshow presented at the National Sunflower Association’s annual Research Forum in Fargo, ND, in January 2008. Background information was provided about new staff in the Sunflower Genetics programs as well as progress during this, the transitional year. Studies to be conducted in the upcoming year
New directions and changing faces for the USDA sunflower genetics programs Read More »
Thomas Gulya Jr. and Brent Hulke Abstract: Sclerotinia diseases remain the most significant of all diseases on both oilseed and confection sunflower production in the U.S. In 2007 Sclerotinia stalk rot and head rot affected 30% and 26%, respectively, of fields surveyed in North Dakota, South Dakota, Minnesota, Kansas, Colorado and Texas. Stalk rot and
