peer-reviewed journal publication

Lili Qi, Thomas Gulya Jr., Gerald Seiler, Brent Hulke, Brady Vick Abstract: Sunflower rust, caused by Puccinia helianthi, is a prevalent disease in many countries throughout the world. The U.S. Department of Agriculture (USDA)-Agricultural Research Service, Sunflower Research Unit has released rust resistant breeding materials for several decades. However, constantly coevolving rust populations have formed new […]

Brent Hulke, Zahirul Talukder, Lili Qi and Thomas Gulya Jr. Abstract: In 2010, we continued the process of backcrossing the head rot QTL from the HA 441 x RHA 439 population into confectionery and elite oilseed backgrounds. Progress is slow due to complexities in scoring of alleles in breeding progenies (dominant markers sometimes in repulsion

Thomas Gulya Jr and Brent Hulke Abstract: The 2010 growing season had abnormally high rainfall in the Red River Valley area of North Dakota and Minnesota, where many of our Sclerotinia nurseries were located. While we have successfully done field evaluations of sunflower for both Sclerotinia head rot and stalk rot for nine years, we

Chao-chien Jan, Lili Qi, Brent Hulke, and Xuelin Fu Abstract: The “doubled haploid” project started in October, 2010, covering four main approaches: anther culture, microspore culture, use of foreign pollen as inducer, and induced mutation. A set of genetically diverse cultivated lines, wild Helianthus accessions and interspecific amphiploids have been established to provide source material

Li Gong, Sam Markell, Brandy Vick, Brent Hulke, Thomas Gulya Jr and Lili Qi Abstract: Sunflower rust (Puccinia helianthi) emerged as a serious disease in the last few years. Confection sunflower is particularly vulnerable to the disease due to the lack of resistance sources. The objectives of this project are to transfer rust resistance genes

James Anderson, E Patrick Fuerst, Trisa Tedrow, Brent Hulke and Ann Kennedy Abstract: Incubation of dormant wild oat (Avena fatua L., isoline M73) caryopses for 1−3 days with Fusarium avenaceum seed-decay isolate F.a.1 induced activity of the plant defense enzyme polyphenol oxidase (PPO). Both extracts and leachates obtained from F.a.1-treated caryopses had decreased abundance of an ∼57 kDa antigenic PPO and increased abundance of antigenic PPOs ranging from ∼52 to 14 kDa, as

J. Glover, J. Reganold, L. Bell, J. Borevitz, E. Brummer, E. Buckler, C. Cox, T. Cox, T. Crews, S. Culman, L. Dehann, D. Eriksson, B. Gill, J. Holland, F. Hu, B. Hulke, A. Ibrahim, W. Jackson, S. Jones, S. Murray, A. Paterson, E. Ploschuk, E. Sacks, S. Snapps, D. Tao, D. Van Tassel, L. Wade,

Brent Hulke, Jerry Miller and Thomas Gulya Jr. Abstract: Sunflower rust (caused by Puccinia helianthi Schwein.) has become a more significant threat to U.S. sunflower (Helianthus annuus L.) production as a result of the multiplicity of races, increasing incidence, and lack of commercial hybrids with resistance. Thus, there is a need for new sources of effective rust resistance

Brent Hulke Abstract: Genomics is providing plant breeders with new ways to integrate basic genetic knowledge with conventional breeding protocols to solve important problems. This presentation demonstrated the practical value of SNP (single nucleotide polymorphism) markers to augment traditional breeding programs. Problems that are commonly encountered by sunflower breeders were presented along with a solution

J. Glover, J. Reganold, L. Bell, J. Borevitz, E. Brummer, E. Buckler, C. Cox, T. Cox, T. Crews, S. Culman, L. Dehann, D. Eriksson, B. Gill, J. Holland, F. Hu, B. Hulke, A. Ibrahim, W. Jackson, S. Jones, S. Murray, A. Paterson, E. Ploschuk, E. Sacks, S. Snapps, D. Tao, D. Van Tassel, L. Wade,