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Showing 1 to 20 of 75 for “"Herbicide Resistance"”.
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Multiple Herbicide Resistance in Waterhemp
… a protoporphyrinogen oxidase (PPO)-inhibiting herbicide. Greenhouse studies were conducted with this waterhemp biotype, and revealed that plants were also resistant to atrazine, a photosystem II (PSII)-inhibiting herbicide. A waterhemp line selected for multiple herbicide resistance, designated …
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Population genetics of herbicide resistance in waterhemp
Waterhemp populations resistant to herbicides that inhibit protoporphyrinogen oxidase (PPO) have been identified throughout the Midwest and the mechanism of resistance in populations from Illinois was previously determined to result from a 3 base pair deletion in the protoporphyrinogen oxidase …
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Empirical investigation of de novo mutations conferring herbicide resistance
In a predictable natural selection process, herbicides select for adaptive alleles that allow weed populations to survive. These resistance alleles may be available immediately from the standing genetic variation within the population, as well as, may immigrate via pollen or seeds from other …
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Herbicide resistance in Black-grass (<i>Alopecurus myosuroides</i> Huds.)
Herbicide resistant grass weeds are a growing problem throughout the UK with <i>Alopecurus myosuroides</i> Huds. (black-grass) considered a major problem in winter cereals. Blackgrass control is hindered by the presence of populations resistant to herbicides. Research indicates that resistance in …
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Fitness costs of herbicide resistance traits in common waterhemp (Amaranthus tuberculatus)
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2018-05-01
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Forward screening for herbicide resistance in Arabidopsis thaliana and the monocot species Triticum aestivum
… second focus of this thesis was to develop new herbicide resistant lines in A. thaliana. Indaziflam is a potent herbicide used to control annual grasses and broadleaf weeds. To better understand the plant pathways affected by indaziflam, a forward genetic screen for indaziflam resistance was …
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Risk assessment of the transfer of imazethapyr herbicide resistance from Clearfield rice to red rice
… red rice samples across two years. Imazethapyr resistance was generally controlled by a single dominant gene, except in some F2 populations where significant deviations from expected resistant/susceptible ratios were detected. Similar results were observed in F2 populations for segregation of …
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The evolution of dioecy and herbicide resistance: a genomic and transcriptomic exploration of Amaranthus species
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Herbicide resistance in kochia and wheat: the loss and gain of weed control tools for wheat production
… systems relies heavily on the use of chemical herbicides. While these herbicides are largely effective and very efficient, they are prone to herbicide resistance evolution in weeds. Herbicide resistance evolution is the most pressing issue facing weed scientists, currently. As researchers …
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Evaluation And Characterization of Herbicide Resistance In Italian Ryegrass (Lolium multiflorum Lam.) Biotypes To Diclofop-methyl And Alternative Management Options
… The first incidence of diclofop resistance in Italian ryegrass was reported in Virginia in 1995. Experiments to characterize diclofop resistance in several Virginia biotypes of Italian ryegrass included the following objectives: (1) evaluation of the presence of diclofop …
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Discovery, surveillance, and management of herbicide-resistant amaranthus spp
… Midwestern agricultural production systems. Herbicides are often relied upon for the control of Amaranthus spp. In recent years, herbicide resistance at multiple sites of action, such as 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) and protoporphyrinogen oxidase (PPO), have become …
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Transgenic Rice in Asia: A General Equilibrium Assessment of Potential Welfare Effects and Regional Distribution
… of three transgenic rice technologies: stemborer resistance, for favorable irrigated environments; drought resistance, for unfavorable non-irrigated environments; and herbicide resistance, which can potentially benefit any of the environments but can only be adopted in areas under direct seeding. …
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Recent advances using genetic analyses in waterhemp
… the Midwestern United States. The development of herbicide resistance is a contributing factor leading to management challenges in the species. Recently, non-target-site herbicide resistance has been increasingly associated with new evolutionary events, further limiting the potential for effective …
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Reduced Chemical Weed Control Options in Virginia for Corn and Turfgrass and Characterization of Sorghum halepense Expressing Multiple Resistance to Nicosulfuron and Glyphosate
… of one of agriculture's most pressing problems- herbicide resistance. Research conducted in Virginia sought to explore the effects of integrating multiple weed management tactics in corn and cool-season turfgrass. Additionally, research was conducted to confirm nicosulfuron and glyphosate …
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Biology and Control of Eastern Black Nightshade, Palmer Amaranth, and Common Pokeweed, in No-Till Systems on the Eastern Shore Regions of Virginia and Maryland
… Eastern Shore regions of Virginia and Maryland. Herbicide resistance and lack of herbicide efficacy further complicate the job of controlling these weeds. Studies were conducted on each of these weeds in order to determine herbicide efficacy and potential herbicide resistance. In addition, the …
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Understanding the Interaction of Mesotrione and Atrazine in Redroot Pigweed (Amaranthus Retroflexus)
… of mesotrione and atrazine and their impact on herbicide resistance stewardship and weed control efficacy. Mesotrione and atrazine are herbicides primarily used in corn, or maize. Herbicide resistance and a reduced number of new chemistries emerging to the market have led to an increased need in …
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Control and Fecundity of Palmer Amaranth (Amaranthus palmeri) and Common Ragweed (Ambrosia artemisiifolia) from Soybean Herbicides Applied at Various Growth and Development Stages
… weeds in soybean. Both weeds possess widespread resistance to glyphosate and acetolactate synthase (ALS) inhibiting herbicides resulting in the use of protoporphyrinogen oxidase- (PPO) inhibitors to control these biotypes, although PPO-resistant biotypes are increasing. New soybean …
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Use of Harvest Weed Seed Control Strategies in Arkansas Soybean
… management programs; however, a sole reliance on herbicides will place more resistance selection pressure on the weeds to which the herbicide is being applied. As herbicide resistance continues to grow and rob growers of yield, alternative weed control options are being sought to create complex …
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