Organic spring wheat (Triticum aestivum L.) breeding programs have been initiated, yet yield efficiency and N economy research is limited. We evaluated the performance of advanced lines selected from an organic breeding program initiated in 2003. Fourteen F 8 and F 9 lines in 2009 and 11 lines in 2010 were compared with commercial (check) cultivars. Field experiments were conducted under organic management at four site-years in Manitoba and Saskatchewan. Combined analysis showed no difference in biomass accumulation between organic lines and check cultivars; however, harvest index and grain yield were greater in organic lines compared with the checks. Organic lines were shorter than check cultivars, but yield efficiency, defined as kernel number per unit of crop biomass at anthesis, was higher (P < 0.05). Kernel mass was also greater for organic lines. Biomass N uptake was similar for organic lines and check cultivars, although total uptake of N into grain was greater for organic lines. The average grain protein content of organic lines was significantly lower than the check cultivars. This study demonstrated that improved yield under organic management was because of better assimilate partitioning, both at anthesis and crop maturity, for organically selected genotypes.

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The "Tudor revival" of late nineteenth and early twentieth-century England saw unprecedented enthusiasm for the study and performance of English Renaissance music. The revival, which emphasized choral music, was characterized by a rich and interconnected fabric of events including manuscript discoveries, the publication of sundry new scholarly and performing editions, the founding of ensembles who specialized in early music, and an overall increase in the study and performance of Tudor music. Narratives of the Tudor revival have traditionally focused on the role of institutions and ensembles in London, thereby neglecting the important work that occurred elsewhere in the country. In order to more adequately represent the full extent of the movement, this study examines the previously unrecognized role of the institutions and ensembles of Oxford, demonstrating the many ways in which the foundation colleges, student societies, and civic ensembles and organizations helped to bring about the Tudor revival. The appendix contains previously unpublished documents from the Oriel College Archives in Oxford, primarily consisting of letters to and from Edmund Fellowes between 1897 and 1925. vi TABLE OF CONTENTS LIST OF TABLES viii