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Showing 1 to 20 of 43 for “"sclerotinia"”.
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Relationship of environmental factors to development of Sclerotinia minor and Sclerotinia blight of peanut
Sclerotinia minor Jagger myceliogenic sclerotial germination, growth, infection, and colonization of peanut (Arachis hypogaea L.) tissue was optimum at 20-25 C. Ninety-five to 100% relative humidity (RH) for more than 12 hours was necessary for germination. There was no difference in infection and …
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Sensitivity and resistance of Sclerotinia minor to fungicides for control of Sclerotinia blight of peanut
Sclerotinia blight, caused by <i>Sclerotinia minor</i>, is a severe disease of peanut in Virginia. Vinclozolin (V), iprodione (I), dicloran (D), and pentachloronitrobenzene (PCNB) were evaluated for their fungitoxicity to <i>S. minor</i>. The mean ED₅₈ values for five isolates were found to be …
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Evaluation of fungicide resistance in Sclerotinia minor and strategies for chemical control of sclerotinia blight of peanut
… possessing high levels of fungitoxicity to Sclerotinia minor, the causal agent of Sclerotinia blight of peanut. The two fungicides, ASC-66825 and RH-3486, are thought to have a different chemistry than the dicarboximide fungicides. The ED₅₀ value (dose required for 50% inhibition of mycelial …
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Evaluation of resistance to Sclerotinia crown and stem rot caused by Sclerotinia trifoliorum in selected alfalfa cultivars
Sclerotinia crown and stem rot (SCSR) incited by Sclerotinia trifoliorum Eriks. causes severe losses in some fall-seeded, no-tillage plantings of alfalfa (Medicago sativa IL.) in Virginia. A mycelial plug inoculation technique was used to detect differences between cultivar (cv) responses of two …
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Sclerotinia sclerotiorum : phytotoxins and metabolism of phytoalexins
Sclerotinia sclerotiorum (Lib.) de Bary is a plant pathogenic fungus causing serious yield losses in a broad range of cultivated plants, excluding cereals. Most of the economically important brassicas such as canola, rapeseed, mustards, cabbages and others such as sunflower, peanut, bean, soybean, …
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The influence of meteorological events and cultural practices on sclerotinia crown and stem rot of alfalfa, caused by Sclerotinia trifoliorum
Sclerotinia crown and stem rot (SCSR), caused by Sclerotinia trifoliorum Eriks., causes serious spring losses in some fall=sown, no-tillage alfalfa fields. In microplots artificially infested with sclerotia, greatest numbers of apothecia were found during November and December. Temperature and …
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Seleção de isolados de Trichoderma spp. antagonistas a Sclerotinia sclerotiorum
Trichoderma spp., antagonistas a vários fitopatógenos, são comumente isoladas do solo, da rizosfera, e como endofíticos. Nosso objetivo foi selecionar isolados de Trichoderma spp. nas culturas do feijão e da soja em Minas Gerais e avaliar o antagonismo a S. sclerotiorum, agente causal do …
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Population Structure, Aggressiveness, and Molecular Genetic Variability of Sclerotinia Sclerotiorum
… and molecular genetic variability of Sclerotinia sclerotiorum (Lib) de Bary was investigated. Population structure was determined by mycelial compatibility grouping (MCG). MCG and aggressiveness of S. sclerotiorum isolates from diverse hosts and geographic locations, from soybean …
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Genetic Analysis of the Resistance of Soybean Genotypes to Sclerotinia Sclerotiorum
… germplasm to identify new genetic sources of sclerotinia stem rot resistance; (ii) determine the inheritance of field resistance to sclerotinia stem rot in a cross between the partially resistant cultivars Asgrow 'A2506' (A2506) and Novartis 'S19--90' (S19--90); (iii) determine the inheritance …
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Transcriptomic characterization of soybean – sclerotinia sclerotiorum interaction at early infection stages
Sclerotinia stem rot, also referred to as white mold, poses a threat to soybean production world-wide. The causal agent, Sclerotinia sclerotiorum (Lib.) de Bary, can survive in harsh environments and has an extremely broad host range. No naturally complete resistance has been reported to exist in …
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Host and pathogen genomics: the molecular repertoire of soybean and Sclerotinia interactions
Sclerotinia sclerotiorum (Lib.) de Bary is an economically important soybean pathogen in the U.S. and worldwide. Understanding the disease caused by this fungus can help in controlling it. In the present study, genome-wide screenings were carried out to identify soybean mRNAs and small RNAs that …
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FACTORS INFLUENCING A PETAL-BASED FORECASTING SYSTEM FOR SCLEROTINIA STEM ROT OF CANOLA
… the percentage of canola petals infested with Sclerotinia sclerotiorum and the incidence of sclerotinia stem rot: canopy density; diurnal and other weather mediated fluctuations in petal infestation; and long-term changes in infestation during flowering. Disease incidence was significantly …
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Breeding for resistance to clover rot (Sclerotinia spp.) in red clover breeding (Trifolium pratense)
… important reasons. Clover rot (clover cancer or Sclerotinia crown and root rot) is an important disease in European red clover crops, caused by the ascomycete fungi Sclerotinia trifoliorum Erikks. or Sclerotinia sclerotiorum Lib. de Bary, Clover rot is difficult to control because its development …
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Diversity, characteristics and potential for biological control of Sclerotinia sclerotiorum mycoviruses in New Zealand
… of controlling plant pathogenic fungi, such as Sclerotinia sclerotiorum, that avoid the drawbacks associated with fungicide-based control, such as resistance and environmental impact. Mycoviruses have been used to reduce the virulence of fungal pathogens, such as using hypoviruses to control the …
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Integrated management of stalk rot disease (Sclerotinia sclerotiorum) of cauliflower in the eastern hills of Nepal
… Previous work indicated that stalk rot (Sclerotinia sclerotiorum) is an important disease of cauliflower. Currently, no single management technique provides a satisfactory level of control of stalk rot disease; therefore the management of stalk rot had to be approached in several ways in …
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EVALUATION OF FUNGICIDE APPLICATION AT LATE BLOOM FOR THE CONTROL OF SCLEROTINIA STEM ROT IN RAPESEED (CANOLA)
… foliar fungicides for the control of sclerotinia stem rot in rapeseed should be applied at early or full bloom but not at late bloom. Field experiments were conducted in several areas of Saskatchewan in 1987 and 1988 to determine if spraying with benomyl at late bloom could adequately …
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Characterization of Transgenic Peanuts Expressing Oxalate Oxidase for Governmental Approval of Their Release for Control of Sclerotinia Blight
<i>Sclerotinia minor</i> Jagger is a fungal pathogen of cultivated peanut (<i>Arachis hypogaea</i> L.) that can cause crop losses in excess of 50%. Fungicides are not completely effective at controlling the disease and can cost up to $311 per hectare for three applications. The ability to produce …
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