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.     

Exclusionary Empire: English Liberty Overseas 1600–1900

This article traces British policy discussions over their position in Latin America between 1959 and 1963. In particular, it looks at the way British officials interacted with the John F. Kennedy administration's flagship Alliance for Progress and examines the reasons behind the gradual support for a more engaged UK policy toward the area. This decision, it argues, came about due to a complex set of reasons that challenge the idea that the Anglo-American relationship determined British policy during the cold war. Both the cold war and Anglo-American relations were important in shaping British thinking, but so, too, were calculations over British economic interests. Indeed, as the article demonstrates, it was the interplay of these three elements that shaped British deliberations.     

'An unholy row in Lancashire': The Textile Lobby, Conservative Politics, and Indian Policy, 1931-1935

This article argues that the ‘Lancashire lobby’remained a vital presence in British politics in the 1930s,not relegated to the political sidelines by ‘gentlemanlycapitalists’ at Westminster. The region's strength, inConservative circles especially, was based not on its numericalstrength in MPs, or in its economic might, but in the symbolicimportance Lancashire had for Conservatives. As this articledemonstrates, this was most evident during the debates overthe Government of India Bill between 1931 and 1935, when theparty's leadership made great, and successful, efforts to keepthe region's representatives from opposing the Bill, and potentiallyswinging many other Tories into opposition as well.