Genetic analysis of wheat landraces enables the location of the first agricultural sites in Italy to be identified

We typed five microsatellite loci in 52 landraces of Italian emmer wheat to determine if genetic analysis of cereals can provide information relevant to the spread of agriculture. Each of the five loci was polymorphic with 43 allele combinations identified in the 52 landraces. The allele combinations fell into two groups. Group 1 comprised 27 genotypes found in 42 landraces and Group 2 comprised 15 genotypes found in 10 landraces. The landraces with Group 1 genotypes showed a strong correlation between geographical and genetic distances (r = 0.601, p < 0.001) but those with Group 2 genotypes did not (r = 0.116, p = 0.244). We inferred that the Group 1 landraces might therefore retain a phylogeographical structure that reflects ancient events. We present a phylogeographical model for the spread of agriculture that enables the point of origin of crop cultivation to be predicted by comparison between the genetic and geographical distances between landraces. We applied this model to the Group 1 landraces by positioning 131 hypothetical points of origin around the coastline and northern border of Italy. The highest correlation coefficients between genetic and geographical distances were seen for hypothetical points of origin located on the coast of northern Puglia. We repeated the analysis with 1040 hypothetical points of origin located within the Italian peninsula. Again, the highest correlation coefficients were located in northern Puglia. These predicted points of origin correspond with the location of the earliest agricultural sites in Italy. The results show that plant genetics can be used to study the spread of agriculture.     

The Fate of Academic Freedom in the Age of High Liberalism: The Case of Charles Beard

In the early years of the Cold War, the American historical community fought vigorously over the reputation of Charles Beard. Midwestern progressives defended his legacy, while postwar liberals denounced Beard as an isolationist whose scholarship had not prepared the United States to fight either German fascism or Soviet communism. This essay explores the attack on Beard, its implications for academic freedom, and its role in silencing critics of the Cold War.     

Sexual citizenship, political obligation and disease ecology in gay Seattle

While rights and freedoms of sexual citizenship have been foregrounded in geography, vaguer attention has been given to questions of political obligation. Feminist work on political obligation, grounded with a framing in political ecology of disease, however, provides a means to correct this neglect. Empirically, I narrate a story of local public health politics in Seattle, WA. There, a cultural panic played out in the media over the alleged failure of political obligations by gay men around sexually transmitted infections. Political obligation and ecology usefully extend the concept sexual citizenship on its own terms by moving beyond a rights-versus-obligation polarity, highlighting the biophysical realities of sex, recognizing the spaces in which sex occurs, and noting the social relations inherent in sex and sexuality. Thus, this paper contributes to deeper thinking for activists involved in working through these questions as well as bolstering the notion of sexual citizenship in political geography.     

LAND PRICES IN ESSEX COUNTY, ONTARIO 1798 TO 1852

This paper examines land prices in Essex County, Ontario, for the period to 1825 and from 1826 to 1852 in terms of overall accessibility to market and the physical environment. The prime source material was the Abstract Index to Deeds , and data drawn from this source were used in a series of multiple regression analyses. The results confirm the importance of accessibility. However, the physical environment did not affect land prices significantly. The article concludes by considering future refinements of the analysis.
L'article examine les prix des terres dans le comté d'Essex, Ontario pour la période jusqu'à 1825 et de 1826 à 1852 en ce qui concerne I'accessibilité générale, I'accessibilité au marché et I'environnement physique. La source principale de la recherche était l' Abstract Index to Deeds et les données de éette source étaient utilisées dans des regressions multiples. Les résultats affirment l'importance de l'accessibilité. Pourtant, l'environnement physique n'a pas eu une influence significantive sur les prix des terres. L'article se termine en considérant des ragginements futurs pour l'analyse.