scholarly journals A Multistate Comparison of Native Octoploid Strawberries from North and South America

2001 ◽  
Vol 126 (5) ◽  
pp. 579-586 ◽  
Author(s):  
J.F. Hancock ◽  
C.A. Finn ◽  
S.C. Hokanson ◽  
J.J. Luby ◽  
B.L. Goulart ◽  
...  
Keyword(s):  
United States ◽  
Disease Resistance ◽  
South America ◽  
Fruit Set ◽  
The United States ◽  
Fruit Color ◽  
Elite Group ◽  
North And South America ◽  
North And South ◽  
Location Interaction

An elite group of 38 strawberry accessions representing all subspecies of the beach strawberry [Fragaria chiloensis (L.) Miller] and the scarlet strawberry (F. virginiana Miller) was planted in a replicated design at five locations across the United States, and evaluated for plant vigor, flowering date, runner density, fruit set, fruit appearance, and foliar disease resistance. Considerable genotyp× location interaction was observed for many of these traits. However, a few genotypes were impressive at all locations including PI 551735 (FRA 368) with its unusually large, early fruit, and PIs 612486 (NC 95-19-1), 612493 (Frederick 9), and 612499 (RH 30), which were very vigorous and had unusually good fruit color. Genotypes that were superior at individual locations included PIs 551527 (FRA 110) and 551728 (Pigeon Pt.) in Maryland for their large fruit, and PI 612490 (Scotts Creek) in Oregon which had extremely large fruit, superior color, firmness, and flavor. The PIs 612495 (LH 50-4), 612498 (RH 23), and 612499 (RH 30) performed well as day neutrals at multiple sites.

Jujuyaspis borealis and associated trilobites and conodonts from the Lower Ordovician of Texas and Utah

1987 ◽  
Vol 61 (1) ◽  
pp. 112-121 ◽  
Author(s):  
James H. Stitt ◽  
James F. Miller
Keyword(s):  
United States ◽  
South America ◽  
North American ◽  
The United States ◽  
International Agreement ◽  
Lower Ordovician ◽  
Central Texas ◽  
North And South America ◽  
First Time ◽  
North And South

Jujuyaspis borealis is reported from earliest Ordovician (North American usage) limestones in central Texas and western Utah, the first time this species has been recognized in the United States. Jujuyaspis is a widespread olenid trilobite that occurs near the base of the Tremadoc Series in a variety of lithologies in North and South America, Europe, and Asia. When international agreement is reached on the exact horizon at or near the base of the Tremadoc Series that is to be used as the Cambrian–Ordovician boundary, Jujuyaspis will likely prove to be a very useful taxon for recognition of the boundary interval.

scholarly journals The concern of Andrey Sheptytsky, the Metropolitan bishop, about Ukrainian Emigrants in North and South America

1970 ◽  
Vol 23 ◽  
pp. 258-270
Author(s):  
Adam Kubasik
Keyword(s):  
United States ◽  
Twentieth Century ◽  
North America ◽  
South America ◽  
The United States ◽  
Immigrant Communities ◽  
Political Agitation ◽  
The Usa ◽  
North And South America ◽  
North And South

At the turn of the nineteenth and twentieth century a large group of Galician Ruthenians emigrated to North America and the United States and Canada, South America - mainly to Argentina and Brazil. Sheptytsky visited North America in 1910. He met with Ukrainian Greek Catholic immigrant communities in the United States and Canada. In 1921, he visited the USA and Canada again. In 1922 he arrived to Argentina and Brazil. He did not conduct open political agitation. However, some of his speeches have an anti-Polish character.

scholarly journals Genomic Acquisitions in Emerging Populations of Xanthomonas vasicola pv. vasculorum Infecting Corn in the United States and Argentina

2020 ◽  
Vol 110 (6) ◽  
pp. 1161-1173 ◽  
Author(s):  
Alvaro L. Perez-Quintero ◽  
Mary Ortiz-Castro ◽  
Jillian M. Lang ◽  
Adrien Rieux ◽  
Guangxi Wu ◽  
...  
Keyword(s):  
United States ◽  
South America ◽  
Phylogenetic Analyses ◽  
The United States ◽  
Virulence Determinants ◽  
Genetic Changes ◽  
Genomic Changes ◽  
Future Work ◽  
North And South America ◽  
North And South

Xanthomonas vasicola pv. vasculorum is an emerging bacterial plant pathogen that causes bacterial leaf streak on corn. First described in South Africa in 1949, reports of this pathogen have greatly increased in the past years in South America and in the United States. The rapid spread of this disease in North and South America may be due to more favorable environmental conditions, susceptible hosts and/or genomic changes that favored the spread. To understand whether genetic mechanisms exist behind the recent spread of X. vasicola pv. vasculorum, we used comparative genomics to identify gene acquisitions in X. vasicola pv. vasculorum genomes from the United States and Argentina. We sequenced 41 genomes of X. vasicola pv. vasculorum and the related sorghum-infecting X. vasicola pv. holcicola and performed comparative analyses against all available X. vasicola genomes. Time-measured phylogenetic analyses showed that X. vasicola pv. vasculorum strains from the United States and Argentina are closely related and arose from two introductions to North and South America. Gene content comparisons identified clusters of genes enriched in corn X. vasicola pv. vasculorum that showed evidence of horizontal transfer including one cluster corresponding to a prophage found in all X. vasicola pv. vasculorum strains from the United States and Argentina as well as in X. vasicola pv. holcicola strains. In this work, we explore the genomes of an emerging phytopathogen population as a first step toward identifying genetic changes associated with the emergence. The acquisitions identified may contain virulence determinants or other factors associated with the spread of X. vasicola pv. vasculorum in North and South America and will be the subject of future work.

Current Understanding of the History, Global Spread, Ecology, Evolution, and Management of the Corn Bacterial Leaf Streak Pathogen, Xanthomonas vasicola pv. vasculorum

2020 ◽  
Vol 110 (6) ◽  
pp. 1124-1131
Author(s):  
Mary Ortiz-Castro ◽  
Terra Hartman ◽  
Teresa Coutinho ◽  
Jillian M. Lang ◽  
Kevin Korus ◽  
...  
Keyword(s):  
United States ◽  
South Africa ◽  
South America ◽  
The United States ◽  
Molecular Diagnostic ◽  
Diagnostic Tools ◽  
Bacterial Leaf Streak ◽  
Long Distance ◽  
North And South America ◽  
North And South

Bacterial leaf streak of corn, caused by Xanthomonas vasicola pv. vasculorum, has been present in South Africa for over 70 years, but is an emerging disease of corn in North and South America. The only scientific information pertaining to this disease on corn came from work done in South Africa, which primarily investigated host range on other African crops, such as sugarcane and banana. As a result, when the disease was first reported in the United States in 2016, there was very limited information on where this pathogen came from, how it infects its host, what plant tissue(s) it is capable of infecting, where initial inoculum comes from at the beginning of each crop season, how the bacterium spreads from plant to plant and long distance, what meteorological variables and agronomic practices favor disease development and spread, how many other plant species X. vasicola pv. vasculorum is capable of infecting or using as alternate hosts, and if the bacterium will be able to persist in all corn growing regions of the United States. There were also no rapid diagnostic assays available which initially hindered prompt identification prior to the development of molecular diagnostic tools. The goal of this synthesis is to review the history of X. vasicola pv. vasculorum and bacterial leaf streak in South Africa and its movement to North and South America, and highlight the recent research that has been done in response to the emergence of this bacterial disease.

scholarly journals Test of Martin’s overkill hypothesis using radiocarbon dates on extinct megafauna

2015 ◽  
Vol 113 (4) ◽  
pp. 886-891 ◽  
Author(s):  
Todd A. Surovell ◽  
Spencer R. Pelton ◽  
Richard Anderson-Sprecher ◽  
Adam D. Myers
Keyword(s):  
United States ◽  
South America ◽  
The United States ◽  
Small Population ◽  
Ecological Impacts ◽  
Radiocarbon Dates ◽  
Frequency Distributions ◽  
Human Colonization ◽  
North And South America ◽  
North And South

Following Martin [Martin PS (1973) Science 179:969–974], we propose the hypothesis that the timing of human arrival to the New World can be assessed by examining the ecological impacts of a small population of people on extinct Pleistocene megafauna. To that end, we compiled lists of direct radiocarbon dates on paleontological specimens of extinct genera from North and South America with the expectation that the initial decline of extinct megafauna should correspond in time with the initial evidence for human colonization and that those declines should occur first in eastern Beringia, next in the contiguous United States, and last in South America. Analyses of spacings and frequency distributions of radiocarbon dates for each region support the idea that the extinction event first commenced in Beringia, roughly 13,300–15,000 BP. For the United States and South America, extinctions commenced considerably later but were closely spaced in time. For the contiguous United States, extinction began at ca. 12,900–13,200 BP, and at ca. 12,600–13,900 BP in South America. For areas south of Beringia, these estimates correspond well with the first significant evidence for human presence and are consistent with the predictions of the overkill hypothesis.

scholarly journals The Requests of Syrians in America to End the Enduring Indifference of the Ottoman Authorities

2019 ◽  
Vol 19 ◽  
pp. 113-128
Author(s):  
Paola Viviani
Keyword(s):  
United States ◽  
New York ◽  
The United States ◽  
Economic Life ◽  
Western Society ◽  
The World ◽  
Critical Issues ◽  
North And South America ◽  
North And South ◽  
Insight Into

The migration of Syrians to America in the 19th and 20th centuries is a major issue which has been widely covered in both fictional and non-fictional literature. Over the same period, many Arab magazines were founded both in North and South America, or “migrated” to those countries. An example is al-Jāmiʿa, which was relocated from Alexandria, Egypt, to New York in 1906, where its founder, the renowned intellectual Faraḥ Anṭūn, was able to undertake a profound study of Western society. Not only did this give him a better insight into that society, but also helped him to better understand the critical issues in his native milieu and the tensions between Turks and Arabs, which often came to the fore, especially when the latter expected the former to help them through important phases of their social, civil, and economic life even in the land they migrated to. This paper analyses an article in al-Jāmiʿa by Nāṣīf Shiblī Damūs, previously published in the epony-mous newspaper, in which Syrian migrants in the United States, with Anṭūn supporting them, lament the indifference of the Ottoman authorities toward them and put forward a number of specific requests, using the magazine as a means of making themselves heard by the entire Arab and Ottoman community throughout the world.

Tocqueville on Catholicism and Democracy : Views from Latin America

2004 ◽  
Vol 25 (2) ◽  
pp. 141-162
Author(s):  
Claudio López-Guerra
Keyword(s):  
United States ◽  
Latin American ◽  
Democratic Republic ◽  
The United States ◽  
Fundamental Question ◽  
Political Freedom ◽  
Social State ◽  
The Social ◽  
North And South America ◽  
North And South

Tocqueville proposed that mores or what he called “habits of the heart” were the main reason why a democratic republic—characterized by the mixture of political freedom and equality—had subsisted in the United States.1 After comparing North and South America, Tocqueville went further to argue that the lack of appropriate customs accounted for the fragility of the nascent Latin American republics. This raises a fundamental question: what are the origins of republican mores? Tocqueville concluded that in the United States the social state was the most important factor.

scholarly journals Variation in the Horticultural Characteristics of Native Fragaria virginiana and F. chiloensis from North and South America

2003 ◽  
Vol 128 (2) ◽  
pp. 201-208 ◽  
Author(s):  
James F. Hancock ◽  
Peter W. Callow ◽  
Sedat Serçe ◽  
Phan Quynh Son
Keyword(s):  
South America ◽  
Seed Set ◽  
Fruit Weight ◽  
Fruit Color ◽  
Soluble Solids ◽  
Horticultural Traits ◽  
Fragaria Chiloensis ◽  
Fragaria Virginiana ◽  
North And South America ◽  
North And South

Variation in 14 horticultural traits of native octoploid Fragaria L. from North and South America was examined in a greenhouse. Significant levels of variation were found for all but a few of the traits at the species, subspecies, regional and genotypic level, with the highest amount of variation generally being partitioned among genotypes. Fragaria chiloensis (L.) Miller was superior to F. virginiana Miller for crown number, fruit weight, soluble solids and seed set, while Fragaria virginiana was superior for runner production, peduncle length, fruit number, fruit color and winter hardiness. Fragaria chiloensis ssp. pacifica Staudt had the highest soluble solids and among the earliest bloom dates, highest crown numbers and highest seed set. Fragaria chiloensis ssp. chiloensis f. chiloensis (L.) Duch. produced the largest fruit and among the earliest bloom dates and longest peduncles. Fragaria chiloensis ssp. chiloensis f. patagonica (L.) Duch. had among the highest crown numbers and the highest percentage seed set. Fragaria virginiana ssp. platypetala (Rydb.) Staudt produced the most crowns and its fruit ripened earliest. Fragaria virginiana ssp. glauca (Wats.) Staudt were the latest flowering, had the darkest fruit color and the most flowering cycles. Fragaria virginiana ssp. virginiana Duch. displayed the most winter dieback, the longest peduncles, and the highest flower and runner numbers. No significant differences were observed in any of the examined traits between F. chiloensis ssp. pacifica and F. chiloensis ssp. lucida, or F. virginiana ssp. grayana and F. virginiana ssp. virginiana. A number of individual genotypes were superior for more than one trait. CFRA 0024 possessed unusually high crown numbers, was extremely early blooming and displayed multiple fruiting cycles. CFRA 1121 had unusually long peduncles and much higher than average values for fruit weight, soluble solids, fruit color and seed set. CFRA 0094 was extremely early flowering and had much darker fruit color than most other F. chiloensis genotypes. CFRA 0368 flowered unusually early and had among the largest fruit. CFRA 0366 possessed unusually long peduncles and the largest fruit of any North American genotype. CFRA 0560 and CFRA 1369 had an unusual combination of multiple flowering cycles and high runner production. CFRA 1170 and 1171 were unusually late fruiting and had high numbers of large fruit on long peduncles. CFRA 1385 and JP 95-3-1 had extremely high flower numbers, long peduncles and large fruit.

Gerald H. Thayer's ornithological work in St Vincent and the Grenadines, Lesser Antilles

2018 ◽  
Vol 45 (1) ◽  
pp. 21-39 ◽  
Author(s):  
James W. Wiley
Keyword(s):  
New York ◽  
New York City ◽  
West Indies ◽  
The United States ◽  
Lesser Antilles ◽  
American Museum ◽  
The West ◽  
Comparative Zoology ◽  
North And South America ◽  
North And South

Gerald Handerson Thayer (1883–1939) was an artist, writer and naturalist who worked in North and South America, Europe and the West Indies. In the Lesser Antilles, Thayer made substantial contributions to the knowledge and conservation of birds in St Vincent and the Grenadines. Thayer observed and collected birds throughout much of St Vincent and on many of the Grenadines from January 1924 through to December 1925. Although he produced a preliminary manuscript containing interesting distributional notes and which is an early record of the region's ornithology, Thayer never published the results of his work in the islands. Some 413 bird and bird egg specimens have survived from his work in St Vincent and the Grenadines and are now housed in the American Museum of Natural History (New York City) and the Museum of Comparative Zoology (Cambridge, Massachusetts). Four hundred and fifty eight specimens of birds and eggs collected by Gerald and his father, Abbott, from other countries are held in museums in the United States.

Sign in / Sign up

Export Citation Format

Share Document