| Abstrakt: |
Morphological diversity and DNA polymorphism of common oat (Avena sativaL.) breeding varieties cultivated in PolandThe aim of the work was characterization of morphological diversity and DNA polymorphism of common oat breeding varieties. 25 morphological traits and DNA polymorphism have been examined using AFLP and RAPD methods. It has been found, that identification of oat breeding varieties is possible based on the examined morphological traits. The examined accessions were differentiated by traits important for intraspecific taxonomy of oat: type of panicle, presence of awns, colour of grain, as well as other morphological traits, such as shape of panicle, and type of awns. Relationships of morphological traits of leaves, grains, and stem with some DNA fragments suggesting presence of molecular markers of these morphological traits have been found. Morphological similarity of breeding varieties doesn't correspond to affinity complied with DNA similarity of these objects.Breeding varieties distinguishing unique combination of morphological traits as well as different DNA polymorphism have been identified. They could be used in process of new varieties breeding. Complex characterization of the examined objects of oat collection, maintained in the National Centre for Plant Genetic Resources of Plant Breeding and Acclimatization Institute, will make possible its effective use in breeding and research works and will facilitate management of this collection. |
