Rotation of Cotton () Cultivars and Fallow on Yield and .

A three-year rotation of cotton () cultivars either resistant (R) or susceptible (S) to and fallow (F) was examined for effect on cotton yield and nematode density. In year 1, 2, and 3, the resistant cultivar (DP 2143NR B3XF) yielded 78, 77, and 113% higher than the susceptible cultivar (DP 2044 B3XF). Fallow in year 1 followed by S in year 2 (F1S2) improved yield in year 2 by 24% compared with S1S2, but not as much as R1S2 (41% yield increase over S1S2).

Effects of Fusarium Wilt on Cotton Cultivars with and without Resistance in Fields.

Cotton () cultivar trials were conducted in four fields (6 trials total) with (Mi)/ f. sp. (Fov) from 2019 to 2021.

Studies of Evaluation Methods for Resistance to Fusarium Wilt Race 4 ( f. sp. ) in Cotton: Effects of Cultivar, Planting Date, and Inoculum Density on Disease Progression.

Fusarium wilt caused by f. sp. race 4 (FOV4) is an early season disease causing root rot, seedling wilt, and death.

Mapping of dynamic QTLs for resistance to Fusarium wilt (Fusarium oxysporum f. sp. vasinfectum) race 4 in a backcross inbred line population of Upland cotton.

A backcross inbred line population of cotton was evaluated for Fusarium wilt race 4 resistance at different days after inoculation (DAI). Both constitutively expressed and developmentally regulated QTLs were detected. The soil-borne fungus Fusarium oxysporum f.

Evaluation and Selection of Interspecific Lines of Groundnut ( L.) for Resistance to Leaf Spot Disease and for Yield Improvement.

Early and late leaf spot are two devastating diseases of peanut ( L.) worldwide. The development of a fertile, cross-compatible synthetic amphidiploid, TxAG-6 ([ × ( × )]), opened novel opportunities for the introgression of wild alleles for disease and pest resistance into commercial cultivars.

Evaluation and genome-wide association study of resistance to bacterial blight race 18 in U.S. Upland cotton germplasm.

Bacterial blight (BB), caused by Xanthomonas citri pv. malvacearum (Xcm), is a destructive disease to cotton production in many countries. In the U.

Revision of the Nearctic genus Tritoxa Loew (Diptera: Ulidiidae).

The species of the Nearctic genus Tritoxa Loew are revised. Seven species of Tritoxa are recognized, including two new species: T. californica sp.

A nonproteinaceous Fusarium cell wall extract triggers receptor-like protein-dependent immune responses in Arabidopsis and cotton.

Fusarium wilt caused by the ascomycete fungus Fusarium oxysporum is a devastating disease of many economically important crops. The mechanisms underlying plant responses to F. oxysporum infections remain largely unknown.

The relationship between commercial cotton cultivars with varying resistance genes and yield.

Small plot cotton cultivar trials (12 trials) were conducted from 2016 to 2019 in fields infested with . Entries in these trials included commercial cultivars with partial and high resistance to . , as well as cultivars with no known resistance.

Correction to: Phylogeography of higher Diptera in glacial and postglacial grasslands in western North America.

An amendment to this paper has been published and can be accessed via the original article.

Impacts of Verticillium Wilt on Photosynthesis Rate, Lint Production, and Fiber Quality of Greenhouse-Grown Cotton ().

Verticillium wilt, caused by Kleb., leads to significant losses in cotton yield and fiber quality worldwide. To investigate Verticillium wilt impact on photosynthesis rate, yield, and fiber quality, six upland cotton genotypes, namely Verticillium susceptible (DP 1612 B2XF) and partially resistant (FM 2484B2F) commercial cultivars and four breeding lines, were grown to maturity under greenhouse conditions in soil either infested or not infested with microsclerotia.

Phylogeography of higher Diptera in glacial and postglacial grasslands in western North America.

Background: Pleistocene glaciations have had an important impact on the species distribution and community composition of the North American biota. Species survived these glacial cycles south of the ice sheets and/or in other refugia, such as Beringia. In this study, we assessed, using mitochondrial DNA from three Diptera species, whether flies currently found in Beringian grasslands (1) survived glaciation as disjunct populations in Beringia and in the southern refugium; (2) dispersed northward postglacially from the southern refugium; or (3) arose by a combination of the two.

Systematics of Paraleucopis Malloch with proposal of Paraleucopidae, a new family of acalyptrate Diptera.

Paraleucopidae Wheeler fam. nov. is proposed for the previously unplaced New World genera Paraleucopis Malloch, Mallochianamyia Santos-Neto and Schizostomyia Malloch and undescribed Australian species.

Rhamphomyia Meigen of the Canadian Arctic Archipelago, Greenland and Iceland (Diptera: Empididae).

Rhamphomyia of the Canadian Arctic Archipelago, Greenland and Iceland, comprising 23 species, including five new species, are revised: R. (Ctenempis) albopilosa Coquillett, R. (Dasyrhamphomyia) erinacioides Malloch, R.

Saproxylic Diptera assemblages in a temperate deciduous forest: implications for community assembly.

Saproxylic insects, those associated directly or indirectly with decaying wood for all or part of their life cycle, compose a large proportion of forest organisms. Flies (Diptera) are often the most abundant and species-rich group of insects in forest microhabitats, yet most work to date on saproxylic insect diversity and ecology has focused on beetles (Coleoptera). We compared saproxylic Diptera assemblages reared from two tree species (sugar maple and American beech) at two stages of decay (early/young and advanced/old) for a total of 20 logs in an eastern Canadian Nearctic old-growth forest.

Diversity of saproxylic dance flies and long-legged flies (Diptera: Empidoidea) in a temperate deciduous forest in Quebec, Canada.

A large diversity of saproxylic Empidoidea from a temperate deciduous forest in southern Quebec is documented. Adults of 43 empidoid species representing 19 genera in 12 subfamilies and three families were collected from in situ sealed emergence traps placed over decayed logs of American beech (Fagus grandifolia Ehrhart) and sugar maple (Acer saccharum Marshall). The results of this technique give a clear indication of the saproxylic larval and pupal habitat of these species.

Phylogeny and revised classification of the tribe Elachipterini (Diptera: Chloropidae).

The phylogenetic relationships of the chloropid tribe Elachipterini were analysed. Sixty-eight exemplar species and seven outgroup species were included in a cladistic analysis based on 76 morphological characters of adult specimens in order to test existing, non-phylogenetic, classifications of the tribe. Nine genera are recognized in the Elachipterini: Allomedeia Mlynarek Wheeler, Alombus Becker, Anatrichus Loew, Ceratobarys Coquillett, Disciphus Becker, Elachiptera Macquart, Goniaspis Duda, Melanochaeta Bezzi and Sepsidoscinis Hendel.

Chloropid flies (Diptera, Chloropidae) associated with pitcher plants in North America.

We review the taxonomy and ecology of Chloropidae (Diptera) associated with pitcher plants (Sarraceniaceae) in North America. Mlynarek sp.n.

Revision of the Nearctic species of Callomyia Meigen (Diptera: Platypezidae) and phylogeny of the genus.

The Nearctic fauna of the genus Callomyia Meigen is revised and a phylogeny of the world species, based on morphological characters, is presented. Although morphological data are used primarily to delimit species, molecular sequence data (DNA barcodes) are used where possible, to help determine species boundaries and associate sexes. Species descriptions, diagnoses, and distribution maps are presented, along with illustrations of habitus, male terminalia, and additional important diagnostic characters.

A new species of Neossos Malloch (Diptera: Heleomyzidae) from the Yukon Territory, Canada, and a revised key to the Nearctic species.

Background: The rarely collected genus Neossos Malloch contains three Nearctic and one western European species. Most known specimens have been collected from bird nests. Two specimens of an undescribed species of Neossos were collected by sweeping in subarctic tundra and a mesic meadow in the Yukon Territory, Canada.

Diversity of Piophilidae (Diptera) in northern Canada and description of a new Holarctic species of Parapiophila McAlpine.

Piophilidae (Diptera) were inventoried at 12 sites in boreal and arctic Canada as part of the 1947-1962 Northern Insect Survey and 2010-2011 Northern Biodiversity Program. Seventeen species were identified, including a new Holarctic species: Parapiophila kugluktuk sp. n.

Species boundaries of Pardosa concinna and P. lapponica (Araneae: Lycosidae) in the northern Nearctic: morphology and DNA barcodes.

The Holarctic Pardosa lapponica (Thorell, 1872) and the Nearctic P. concinna (Thorell, 1877) are the only North American members of the Pardosa lapponica species-group. The morphological similarity between the two species raises the question of whether or not they should be treated as separate species.

Neotropical Agromyzidae (Diptera) of the Mission Géodésique de l'Équateur: Becker (1920) revisited.

The Ecuadorian Agromyzidae described by Theodor Becker from the Mission du service géographique de l'armée pour la mesure d'un arc de méridien équatorial en Amérique du Sud are revised and several taxonomic changes are proposed. The eight named species identified by Becker actually comprise 14 species of Agromyzidae (3 Melanagromyza, 4 Cerodontha, 6 Liriomyza, 1 Nemorimyza) and one species of Heleomyzidae. Three new species are described: Cerodontha (Cerodontha) angela Boucher sp.

Vertical stratification of beetles (Coleoptera) and flies (Diptera) in temperate forest canopies.

Forest canopies support high arthropod biodiversity, but in temperate canopies, little is known about the spatial distribution of these arthropods. This is an important first step toward understanding ecological roles of insects in temperate canopies. The objective of this study was to assess differences in the species composition of two dominant and diverse taxa (Diptera and Coleoptera) along a vertical gradient in temperate deciduous forest canopies.