Euphytica

, Volume 150, Issue 3, pp 327–337

Morphological and molecular diversity of Nordic oat through one hundred years of breeding

  • Louise Grau Nersting
  • Sven Bode Andersen
  • Roland von Bothmer
  • Magne Gullord
  • Rikke Bagger Jørgensen
Article

DOI: 10.1007/s10681-006-9116-5

Cite this article as:
Grau Nersting, L., Bode Andersen, S., von Bothmer, R. et al. Euphytica (2006) 150: 327. doi:10.1007/s10681-006-9116-5

Summary

Genetic diversity in microsatellites and development of agronomical characters in Nordic oat cultivars (Avena sativa) from the 20th century, ranging from landraces to new cultivars, were studied. A clear development in agronomical characters has taken place in this period: Straw length has been reduced, harvest index has increased and heading date has declined. The persistent oat breeding effort in the northern part of the region was indicated by the data, since cultivars from this region showed higher harvest index. Also adaptation to shorter summers was apparent in cultivars from the most northern part of the area. When comparing cultivars released after 1940 to the landraces, the loss of diversity revealed for the agronomical characters was also indicated by the molecular data. This indicates that a more general loss of diversity has taken place in the period, possibly due to random factors during the breeding process (bottleneck effect). The reduction in diversity revealed by recent cultivars at an agronomical as well as a molecular level emphasises the importance of implementing a conservation strategy for older material in order to secure genetic diversity for future oat breeding efforts.

Key words

agronomical charactersAvena sativadiversityintensive breedinglandracesmicrosatellites

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Louise Grau Nersting
    • 1
  • Sven Bode Andersen
    • 2
  • Roland von Bothmer
    • 3
  • Magne Gullord
    • 4
  • Rikke Bagger Jørgensen
    • 1
  1. 1.Biosystems DepartmentRisoe National LaboratoryRoskildeDenmark
  2. 2.Department of Agricultural SciencesThe Royal Veterinary and Agricultural UniversityFrederiksberg CDenmark
  3. 3.Swedish University of Agricultural SciencesAlnarpSweden
  4. 4.GraminorIlsengNorway