Changes over time in the genetic diversity of four major European crops; a report from the Gedifiux Framework 5 project

摘要

Genetic diversity in four major European crops was assessed over the latter half or more of the twentieth century using various DNA markers. Barley genetic diversity was quantitatively unchanged over the time period in question with more diversity found amongst varieties actively in commerce. Similarly wheat genetic diversity was greatest in varieties actively in commerce and an overall increase in diversity over time was noted. An initial increase in German maize genetic diversity was identified followed by a subsequent decrease. French maize genetic diversity showed qualitative rather than quantitative changes and no overall reduction was found. Potato genetic diversity was found not to decrease; indeed a slight increase was found when measured byNBS profiling.