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Varietal Resistance to Cercospora Leaf Blight

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Presentation on theme: "Varietal Resistance to Cercospora Leaf Blight"— Presentation transcript:

1 Varietal Resistance to Cercospora Leaf Blight
Brian Ward, PhD Department of Plant Pathology and Crop Physiology Louisiana State University Agricultural Center

2 Locations Alexandria / Bossier City / St. Joe, LA
Stoneville / Verona, MS Cotton Grove, TN Beaumont, TX Portageville, MO Fairhope, AL Kibler / Marianna / Rohwer / Stuttgart, AR 2016, 2017

3 Refine Rating System

4 Resistant Breeding Lines
2/520 resistant at all analyzed locations PI PI 2016 PI PI PI PI PI PI PI PI PI PI PI 2017 PI PI PI PI PI PI PI408191A PI PI PI PI PI PI PI PI PI PI PI PI PI PI PI PI PI615582

5 Resistance Screening Assay utilizing cercosporin (toxin) applied to leaf disks. 3-6 days, minimal material cost. Resistant Susceptible

6 Resistance Screening Variety 7 Variety 24

7 Soil Type And Resistance
7% 20%

8 Nutrition and Resistance
Pearson correlation = (Strong) P-Value = (Significant)

9 Soil and Resistance

10 Soil and Resistance CTR Iron

11 Collaborators Dr. Trey Price Dr. Thanos Gentimis Dr. Blair Buckley
Dr. Tom Allen Dr. John Rupe Dr. Travis Faske Dr. Xin-Gen Zhou Dr. Pengyin Chen Dr. Terry Spurlock Dr. Ed Sikora Dr. Heather Kelly Dr. Leandro Mozzoni Bob Holland Dr. Liliana Florez Dr. Moldir Orazaly David Moseley Dr. Sara Thomas Clark Robertson Marija Zivanovic Emily Pace Ethan Hunt

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