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Showing 1 to 14 of 14 for “"Gray leaf spot"”.
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Inheritance of resistance to gray leaf spot of corn
… corn inbreds, selected for resistance to gray leaf spot (caused by Cercospora zeae-maydis) in 1989 and 1990, were crossed with the susceptible inbreds FR1141 and/or FR20 and populations of four to six generations were produced. In 1991, the populations were evaluated for gray leaf spot …
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A greenhouse screening method for resistance to gray leaf spot in maize
Gray leaf spot (GLS) disease of maize (Zea mays L.), caused by the fungus Cercospora zeae-maydis, causes significant corn yield losses in Virginia and other mid-Atlantic states. A new greenhouse assay method with filter paper discs of C. zeaemaydis mycelia has been developed to evaluate corn …
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Gray leaf spot of corn: yield loss and evaluation of germplasm for resistance
Gray leaf spot (GLS) of corn (Zea mays L.), caused by the fungus Cercospora zeaemaydis (CZM) (Tehon and Daniels) has increased in incidence and severity with increasing use of no-tillage and continuous corn practices. This disease can be yield limiting. Corn hybrids were evaluated under natural …
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Characterization of Resistance to Gray Leaf Spot [Pyricularia Grisea (Cooke) Sacc.] in Perennial Ryegrass and Tall Fescue
… DNA markers associated with resistance to gray leaf spot. Although polymorphic bands were identified between the resistant and susceptible bulks, these markers were not confirmed on the entire population to be significantly associated with resistance.
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Inheritance of reactions to gray leaf spot and maize dwarf mosaic virus in maize and their associations with physiological traits
Gray leaf spot, caused by Cercospora zeae-maydis, can be a yield-limiting factor in maize where continuous minimum tillage practices are followed. Commercial corn hybrids were evaluated for response to gray leaf spot for seven years at two Virginia locations (Shenandoah and Wythe Counties) and one …
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Pest management practices used by West Virginia corn growers
… useable surveys were returned.;It was found that Gray leaf spot and Maize virus were the most prevalent diseases; Johnson grass, Pigweed and Fall panicum were the weeds most injurious; Corn borer, Stalk borer, and Root worms were the most injurious insects; and, of vertebrates, deer were the most …
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The Role of G-Protein Signaling in Pathogenesis in Cercospora zeae-maydis
<p>Gray leaf spot, caused by Cercospora zeae-maydis, is one of the most destructive foliar diseases of maize worldwide. C. zeae-maydis orients hyphal growth towards stomata (stomatal tropism) and forms infectious structures (appressoria) that are necessary for successful infection. Although some …
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Investigation of Biotic and Abiotic Factors Affecting Double-Cropped Corn (Zea mays L.) Production in Virginia
… (Heliothis zea), disease progress curves for gray leaf spot Cercospora zeae-maydis), and number of plants exhibiting virus symptoms. The Bt hybrid performed significantly better than the non-Bt hybrid for yield and test weight in double-cropped corn in 1998 and 2000, but not in 1999. A …
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The Genetic Architecture Of Quantitative Disease Resistance In Maize
… of maize (Zea mays L. ssp. mays), northern leaf blight (NLB, caused by Setosphaeria turcica L. anamorph Exserohilum turcicum). The maize nested association mapping (NAM) population, a reference design population consisting of 4,630 recombinant inbred lines, was evaluated over three …
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Genetic architecture of multiple disease resistance in one maize chromosome segment substitution line population
… fungal and bacterial resistance. Bacterial leaf streak (BLS) is a foliar disease of maize caused by Xanthomonas vasicola pv. vasculorum. Since the first report of BLS in the United States in 2014, this disease has spread all over the Midwestern corn belt. Little is known about the disease …
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Interactions between oxidative stresses in corn
… were common rust (Puccinia sorghi), brown spot (Physoderma maydis), northern leaf blight (Exserohilum turcicum), and gray leaf spot (Cercospora zeae-maydis). Within a growing season disease severity was highly genotype-dependent; however, there were modest genotype-independent ozone …
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Studies on sweet corn: Stewart's wilt forecasting, the effect of maize dwarf mosaic on foliar diseases, and herbicide sensitivity
… of five diseases including: southern corn leaf blight (SCLB), northern corn leaf spot (NCLS), gray leaf spot (GLS), Diplodia leaf streak (DLS), and eyespot. Among MDM-susceptible hybrids, mean severity ratings of SCLB, NCLS, GLS, DLS, and eyespot on MDM-infected plants typically were double …
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From field to rumen: foliar fungicide application on corn and its effects on the corn plant, corn silage, and Holstein cow performance
… at R1. Evaluators at R1 and R3 reported signs of Gray Leaf Spot and Northern Leaf Blight on the foliage. In part one, 24 individual corn plants from each treatment were collected R1 and R3 for weight and length measurement. At each collection, treatment corn plants were disassembled into leaves, …