peer-reviewed journal publication


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Resistance in Cultivated Sunflower Germplasm to the Red Sunflower Seed Weevil (Coleoptera: Curculionidae) in the Northern Great Plains

Laurence Charlet, Gerald Seiler, Kathleen Grady, Brent Hulke and Anitha Chirumamilla Abstract: A 6-year field study evaluated 52 sunflower, Helianthus annuus L., accessions, 20 breeding lines, and 9 interspecific crosses for resistance to infestation by naturally occurring populations of the red sunflower seed weevil, Smicronyx fulvus LeConte (Coleoptera: Curculionidae). Germplasm with potential sources of resistance […]

Resistance in Cultivated Sunflower Germplasm to the Red Sunflower Seed Weevil (Coleoptera: Curculionidae) in the Northern Great Plains Read More »

Research Progress and Results from the 2009 Sunflower Genetics Trials

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. Preliminary data on insect resistant lines and experimental hybrids was discussed.

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New Sunflower Rust Projects in the USDA Sunflower Research Unit

Lili Qi, Thomas Gulya Jr., Brent Hulke and Brady Vick Abstract: Sunflower rust Puccinia helianthi is a serious disease that has been increasingly prevalent in much of the North America sunflower producing region. To effectively control this disease, three independent but complementary projects were initiated in the Sunflower Research Unit. One was evaluation of USDA-released

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Resistance in Cultivated Sunflower to the Sunflower Moth (Lepidoptera: Pyralidae) in the Central Plains

Laurence Charlet, Robert Aiken, Gerald Seiler, Anitha Chirumamilla, Brent Hulke and Janet Knodel Abstract: A five-year field study evaluated 42 sunflower (Helianthus annuus L.) accessions, 25 breeding lines, and 40 interspecific crosses for resistance to infestation and damage from larval feeding by naturally occurring populations of the sunflower moth, Homoeosoma electellum (Hulst) (Lepidoptera: Pyralidae). Accessions PI 175728 and

Resistance in Cultivated Sunflower to the Sunflower Moth (Lepidoptera: Pyralidae) in the Central Plains Read More »

Update on Host Plant Resistance Studies of Banded Sunflower Moth and Sunflower Moth

Anitha Chirumamilla, Laurence Charlet, Brent Hulke, Gerald Seiler, Theresa Gross, Janet Knodel and Robert Knodel Abstract: Breeding pest-resistance crop cultivars to insects and diseases is one of the primary goals of integrated pest management programs worldwide. Host plant resistance is a tactic that uses the plant’s own defenses to reduce injury from pest attack. Among

Update on Host Plant Resistance Studies of Banded Sunflower Moth and Sunflower Moth Read More »

The Development of Perennial Sunflower for Wildlife and Food Uses

Mikey Kantar, Kevin Betts, Bob Stupar, Brent Hulke and Don Wyse Abstract: The objective of this research is to use current genetics and plant breeding techniques to introgress genes for perennial habit from Helianthus tuberosus L. (2n=6x=102) into domesticated sunflower (Helianthus annuus L., 2n=2x=34). H. tuberosus is part of the secondary gene pool of sunflower

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Resistance of Sunflower Germplasm to the Sunflower Stem Weevil and Red Sunflower Seed Weevil and Evaluation of Commercial Hybrids for Resistance to the Sunflower Midge

Laurence Charlet, Brent Hulke, Anitha Chirumamilla, Gerald Seiler, Kathleen Grady, Robert Aiken and Janet Knodel Abstract: In the central and northern Plains, cultivated sunflower (Helianthus annuus L.) is attacked by a number of insect pests resulting in yield losses for sunflower producers. Host-plant resistance can provide a long-term solution to managing these insects with reduced

Resistance of Sunflower Germplasm to the Sunflower Stem Weevil and Red Sunflower Seed Weevil and Evaluation of Commercial Hybrids for Resistance to the Sunflower Midge Read More »

Evaluation of Rust Resistance to New Virulent Races in USDA-Released Sunflower Breeding Lines and DNA Marker Validation in the Rust Resistance Gene Pool

Lili Qi, Thomas Gulya Jr., Brent Hulke, Gerald Seiler and Brady Vick Abstract: Sunflower rust, caused by Puccinia helianthi Schewein, is a prevalent disease in many countries throughout the world. The USDA-ARS Sunflower Unit has released breeding materials identified as ‘rust resistant’ for several decades. However, constantly co-evolving rust populations have formed new virulent races

Evaluation of Rust Resistance to New Virulent Races in USDA-Released Sunflower Breeding Lines and DNA Marker Validation in the Rust Resistance Gene Pool Read More »

Evaluation of Rust Resistance to New Virulent Races in USDA-Released Sunflower Breeding Lines and DNA Marker Validation in the Rust Resistance Gene Pool

Lili Qi, Thomas Gulya Jr., Gerald Seiler, Brent Hulke and Brady Vick Abstract: Sunflower rust, caused by Puccinia helianthi Schewein, is a prevalent disease in many countries throughout the world. The USDA-ARS Sunflower Unit has released breeding materials identified as ‘rust resistant’ for several decades. However, constantly co-evolving rust populations have formed new virulent races

Evaluation of Rust Resistance to New Virulent Races in USDA-Released Sunflower Breeding Lines and DNA Marker Validation in the Rust Resistance Gene Pool Read More »

New Sources of Sclerotinia Stalk Rot in Cultivated USDA Sunflower Plant Introductions

Thomas Gulya Jr. and Brent Hulke Abstract: In a two-year study, 250 cultivated sunflower genotypes from the USDA sunflower collection (maintained and distributed by the North Central Regional Plant Introduction Station, Ames, Iowa) were evaluated in multiple field trials for their reaction to stalk rot incited by Sclerotinia sclerotiorum. Three locations were planted in 2008

New Sources of Sclerotinia Stalk Rot in Cultivated USDA Sunflower Plant Introductions Read More »