Morphological, isoenzymatic and ISSRs-based description of diversity of eight sand oat (Avena strigosa Schreb.) landraces

• DOI: 10.1007/s10722-016-0464-2
• Publication Date: 2016-11-22T07:27:15Z
• Authors: Wiesław Podyma; Maja Boczkowska; Bogdan Wolko; Denise F. Dostatny
• Keywords: Avena

The paper presents a diversity study of eight Avena strigosa landraces originating from different parts of the world. The analysis was based on morphological description, isoenzymes and inter simple sequence repeats. Uniquely, the variability within each tested accession at the DNA level was identified. The isoenzymes analysis was not sufficiently sensitive to detect differences among accessions. Extended analysis using morphology and molecular markers allowed distinction among landraces. The accession PL51584 from France showed significant genetic distinctiveness from all other accessions. We applied the generalized procrustes analysis to compare the results of the surveys. It allowed identifying two groups of accessions. The first one consisting of three landraces originated from Southwestern Europe, while the second one was formed by three accessions originated from central and east Europe together with Argentinian one. The Southwestern Europe landrace retained their distinctness. The accessions that originated from South America were slightly more internally diverse than the European accessions. It may be a reflection of the different usage i.e. for forage, pasture or as a cover crop instead of grain. During the last century sand oat was controlled as a weed in Europe, while in South America its potential as a forage crop in marginal environments was appreciated and new cultivars were developed. A new attitude arises presently towards to A. strigosa in Europe.