Effect of Soybean Cyst Nematode Resistance Source and Seed Treatment on Population Densities of Heterodera glycines, Sudden Death Syndrome, and Yield of Soybean
| Autor: | Yuba R. Kandel, Carl A. Bradley, Daren S. Mueller, Martin I. Chilvers, Adam M. Byrne, Kiersten A. Wise, Albert Tenuta, Stith N. Wiggs, J. Faghihi |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Nematoda Pyridines Soybean cyst nematode Plant Science 01 natural sciences Population density 03 medical and health sciences chemistry.chemical_compound Fusarium Yield (wine) Animals Cultivar Disease Resistance Plant Diseases Population Density biology Heterodera fungi food and beverages biology.organism_classification Horticulture 030104 developmental biology nervous system chemistry Agronomy Seed treatment Benzamides North America Seeds Postharvest sense organs Soybeans Fluopyram Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Plant disease. 101(12) |
| ISSN: | 0191-2917 |
| Popis: | A three-year study was conducted in Illinois, Indiana, Iowa, Michigan, and Ontario, Canada, from 2013 through 2015 to determine the effect of soybean (Glycine max) cultivars’ source of soybean cyst nematode (SCN; Heterodera glycines) resistance on SCN population densities, sudden death syndrome (SDS; caused by Fusarium virguliforme), and yield of soybean. Five cultivars were evaluated with and without fluopyram seed treatment at each location. Cultivars with no SCN resistance had greater SDS severity, greater postharvest SCN egg counts (Pf), and lower yield than cultivars with plant introduction (PI) 548402 (Peking) and PI 88788-type of SCN resistance (P < 0.05). Cultivars with Peking-type resistance had lower Pf than those with PI 888788-type and no SCN resistance. In two locations with HG type 1.2-, cultivars with Peking-type resistance had greater foliar disease index (FDX) than cultivars with PI 88788-type. Fluopyram seed treatment reduced SDS and improved yield compared with a base seed treatment but did not affect SCN reproduction and Pf (P > 0.05). FDX and Pf were positively correlated in all three years (P < 0.01). Our results indicate that SDS severity may be influenced by SCN population density and HG type, which are important to consider when selecting cultivars for SCN management. |
| Databáze: | OpenAIRE |
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