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Showing 1 to 16 of 16 for “"Soybean aphid"”.
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Evaluation and Identification of Soybean Aphid Resistance Sources and Mapping of Soybean Aphid Resistance Loci in Early Maturing Soybean Germplasm Accessions
<p>Soybean aphid (Aphis glycines Matsumura) has been a major pest of soybean [Glycine max (L.) Merr.] in North America particularly in the northern United States and three Canadian provinces. At least four biotypes of soybean aphid have been confirmed in the United States. Identification of soybean …
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Predator-prey interactions involving the soybean aphid (Hemiptera: Aphididae) in Missouri
The recently introduced soybean aphid, Aphis glycines Matsumura, is found in all soybean growing areas within Missouri. Despite soybean aphid's widespread distribution, it has reached economic threshold in few soybean fields in Missouri. We hypothesized that a predator complex suppresses soybean …
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Management of the soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), in Iowa
<p>In North America, the soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae) is a pest of soybeans, Glycine max (L.) Merrill. The main goal of this research was to verify the preliminary economic threshold for A. glycines management in Iowa. Secondary goals included; verifying an …
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Molecular Approaches to Facilitate Marker-Assisted Selection for Soybean Aphid Resistance in Soybean
… including yield in two elite Midwest adapted soybean backgrounds. This study was done because sometimes the introgression of resistance genes from nonadapted sources can carry undesirable genes through genetic linkages. To test for associated effects, field evaluations of two backcross …
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Evaluation of soybean aphid resistance, yield qtl confirmation, and genetic gain in soybean
Soybean Aphid Resistance in Exotic Soybean Lines The soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), is a common insect pest of soybean [Glycine max (L.) Merr] in China and is also found frequently in other Asian countries. It was identified in the US in 2000 and has since spread …
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Diaporthe, Soybean Cyst Nematode, and Soybean Aphid: An Evaluation of Potential Interactions Occurring Among Pests on Soybean in South Dakota
<p>Soybean <em>Glycine max</em> (L.) Merr., is an important crop grown in South Dakota, with an estimated production of $2.33 billion in 2015. However, soybean production in South Dakota is compromised by four pests, the fungal pathogens <em>Diaporthe longicolla</em> (Hobbs) Santos, Vrandecic, and …
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Soybean aphid intra-biotype variability based on colonization of specific soybean genotypes, resistance responses of soybean genotypes to pathogen infection after the application of chemical elicitors, and resistance to charcoal rot identified in ancestral soybean germplasm
The soybean aphid, Aphis glycines Matsumura (Hemiptera; Aphididae), is one of the most destructive insect pests of soybeans (Glycine max) in the United States. One method for managing this pest is through host plant resistance. Since its arrival in 2000, four aphid biotypes have been identified …
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Entomological considerations for domestication of pennycress, Thlaspi arvense, as a cash cover crop
… crop and oilseed crop for the Midwest U.S. corn-soybean rotation. This domestication presents significant agricultural and environmental benefits; however, understanding of the interactions between pennycress and insect herbivore communities and agroecosystems remains limited. This research aimed …
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Characterizing soybean rust resistance within populations of Glycine tomentella and the inheritance and characterization of soybean aphid resistance in PI 587663, PI 587677, PI 587685, and PI 594592
Soybean rust, caused by Phakopsora pachyrhizi Syd., is known to cause significant damage to soybean yields in many production areas worldwide. Most soybean cultivars are susceptible to the fungus and even though sources of resistance have been discovered within the USDA soybean germplasm bank, …
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Soybean Resistance and Defense Responses Against Aphis Glycines
The soybean aphid, Aphis glycines Matsumara, has become an important pest of soybean [Glycine max (L.) Merrill] in North American since 2000. Host plant resistance is an economical way to control aphids. Soybean resistance against A. glycines was studied by (i) characterizing the antibiosis type of …
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Genetic diversity and fungicide sensitivity of Rhizoctonia solani associated with soybean seedling disease
… fungus, is an important seedling pathogen of soybean in North America. With the dearth of commercial soybean varieties marketed for resistance to members of this species, seed treatment fungicides have become increasingly important as a management option. However, our knowledge of the groups …
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QTL mapping of Phytophthora root rot resistance and aphid resistance in soybean
Soybean [Glycine max (L.) Merr.] is one of the most important crops worldwide. As the largest soybean producer, the United States produces $40.2 billion US dollar worth soybeans in 2011. Biotic stresses such as soybean cyst nematode (SCN), Phytophthora root rot (PRR), sudden death syndromes (SDS) …
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QTL discovery for Japanese beetle resistance in aphid-resistant germplasm, stacking aphid-resistant genes, and metabolite profiling studies in soybean
… institutions and seed companies incorporate soybean aphid (<Aphis glycines> Matsumura) resistance genes into soybean [<Glycine max >(L.) Merr.] cultivars, it is important to retain resistance to insect defoliators. In order to improve MSU aphid-resistant germplasm for resistance to Japanese …
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The Phenotypic Effects and Transcript Response of Salt Stress, the Impact of Viral Infection on Salt Stress Symptoms, and the Effect of Salt Stress on Soybean Virus Vector Activity in Soybean Varieties That Vary in Chloride Uptake
… to reduce yield loss due to salt stress. Soybean, <italics>Glycine max </italics> (L.) Merr., genotypes differ in chloride uptake with genotypes that take up chloride into foliar tissues tending to be salt-sensitive whereas those that partially exclude chloride from the leaves are more …
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Genetic improvement of aphid resistance, protein, and elemental composition in soybean
Yield Drag Associated with the Aphid Resistance Gene Rag2 from PI 200538 The soybean aphid (Aphis glycines Matsumura) is an important pest of soybean [Glycine max (L.) Merr.] that was first identified in North American during 2000. The pest can be controlled by the resistance genes Rag1 and Rag2, …
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Economic Aspects of Crop Pest Management and Monarch Conservation
… conserve Monarchs. The second chapter estimate soybean farmers' value of information provided by alternative configurations of a monitoring network for soybean rust (Phakopsora pachyrhizi). It shows that a network of 400 sentinel plots can maximize the expected profit of soybean farmers provided …