Sunflower

Heritable differences in abundance of bacterial rhizosphere taxa are correlated with fungal necrotrophic pathogen resistance

Authors: Cloe S. Pogoda, Kyle G. Keepers, Stephan Reinert, Zahirul I. Talukder, Brian C. Smart, Ziv Attia, Jason A. Corwin, Kennedy L. Money, Erin C. E. Collier-zans, William Underwood, Thomas J. Gulya, C. Alisha Quandt, Nolan C. Kane, Brent S. Hulke Publication Date: December 1, 2023 Abstract: Host–microbe interactions are increasingly recognized as important drivers […]

Heritable differences in abundance of bacterial rhizosphere taxa are correlated with fungal necrotrophic pathogen resistance Read More »

Pollen quantity, but not grain size, is correlated with floret size in cultivated sunflower, Helianthus annuus L.

Authors: Jarrad R. Prasifka, Zoe M. Portlas, and Brent S. Hulke Publication Date: September 25, 2023 Abstract: Cultivated sunflower (Helianthus annuus L.) pollen helps attract wild and managed bees needed to produce hybrid seed. Pollen quantity and grain size (≈quality) are affected by the environment, but are also heritable traits of interest for breeding. Florets from

Pollen quantity, but not grain size, is correlated with floret size in cultivated sunflower, Helianthus annuus L. Read More »

Field Trip

On Tuesday, August 15 the Hulke Lab took a visit to the CHS sunflower nursery near Grandin, North Dakota. They gave us a tour around the field, showing us a few projects that have been in the works and a few different breeds of sunflowers. We then visited their sunflower processing facility. We got to

Field Trip Read More »

Gibberellic Acid

  Gibberellic Acid, GA3, is a plant growth hormone. It is added to select sunflower heads and sterilizes those specific plants, making them female. The Hulke Lab has been working on GA over the past 2 weeks. As seen in the photos above, the GA3 is placed in the center of the sunflower head very

Gibberellic Acid Read More »

Genetic mapping of a pollinator preference trait: Nectar volume in sunflower (Helianthus annuus L.)

Authors: Ashley C. Barstow, Jarrad R. Prasifka, Ziv Attia, Nolan C. Kane, Brent S. Hulke Publication Date: December 19, 2022 Abstract: Although high pollinator visitation is crucial to ensure the yields of pollinator-dependent crops, the quantitative trait loci (QTL) controlling nectar volume in sunflower (Helianthus annuus L.), a pollinator preference trait, have yet to be identified.

Genetic mapping of a pollinator preference trait: Nectar volume in sunflower (Helianthus annuus L.) Read More »

Double-cropping oilseed sunflower after winter camelina

Authors: R.W. Gesch, Y.A. Mohammed, M.K. Walia, B.S. Hulke, J.V. Anderson Publication Date: March 12, 2022 Abstract: Double-cropping as a means of sustainably intensifying oilseed production could promote farmer adoption of new and alternative use oil crops like camelina [Camelina sativa (L.) Crantz]. Previous research indicated that double-cropping sunflower (Helianthus annuus L.) after winter camelina in the upper Midwest USA tended to reduce sunflower seed yield and

Double-cropping oilseed sunflower after winter camelina Read More »

Aberrant RNA splicing due to genetic incompatibilities in sunflower hybrids

Authors: Chris C. R. Smith, Loren H. Rieseberg, Brent S. Hulke, Nolan C. Kane Publication Date: November 1, 2021 Abstract: Genome-scale studies have revealed divergent mRNA splicing patterns between closely related species or populations. However, it is unclear whether splicing differentiation is a simple byproduct of population divergence, or whether it also acts as a

Aberrant RNA splicing due to genetic incompatibilities in sunflower hybrids Read More »

A Greenhouse Method to Evaluate Sunflower Quantitative Resistance to Basal Stalk Rot Caused by Sclerotinia sclerotiorum

Authors: William Underwood, Christopher G. Misar, Charles Block, Thomas J. Gulya, Zahirul Talukder, Brent S. Hulke, and Samuel G. Markell Publication Date: December 2, 2020 Abstract: Resistance of sunflower to basal stalk rot (BSR) caused by the fungus Sclerotinia sclerotiorum is quantitative, controlled by multiple genes contributing small effects. Consequently, artificial inoculation procedures allowing sufficient throughput and

A Greenhouse Method to Evaluate Sunflower Quantitative Resistance to Basal Stalk Rot Caused by Sclerotinia sclerotiorum Read More »

Genetic loci underlying quantitative resistance to necrotrophic pathogens Sclerotinia and Diaporthe (Phomopsis), and correlated resistance to both pathogens

Authors: Cloe S. Pogoda, Stephan Reinert, Zahirul I. Talukder, Ziv Attia, Erin C. E. Collier-zans, Thomas J. Gulya, Nolan C. Kane, and Brent S. Hulke Publication Date: October 27, 2020 Abstract: Necrotrophic pathogens can avoid or even benefit from plant defenses used against biotrophic pathogens, and thus represent a distinct challenge to plant populations in

Genetic loci underlying quantitative resistance to necrotrophic pathogens Sclerotinia and Diaporthe (Phomopsis), and correlated resistance to both pathogens Read More »