title: AFLP-profiling of long-term stored and regenerated rye Genebank samples.
abstract: The aim of these studies was to analyse the genetic changes induced by natural aging during long-term seed storage of rye. For this purpose, the AFLP (Amplified Fragment Length Polymorphism) technique was applied. In the experiment, DNA variation was demonstrated in seven-day-old seedlings of four seed samples of cv. Dańkowskie Złote, showing different levels of viability following long-term storage. Among the 362 AFLP fragments analysed, 73 had significantly different frequencies in at least one of the series. Principle Coordinate Analysis (PCA) based on molecular data revealed differences between the progenies of naturally aged seed samples with variable initial viability. It was clearly shown that materials with low viability differed in structure from highly viable ones, and that the population changes exhibited in the first case are preserved through regenerations. Although changes that were observed for initially viable samples were not so significant, they still occurred - probably as a result of genetic shift
authors.affiliation: The Botanical Garden - the Centre for the Conservation of Biological Diversity of the Polish Academy of Sciences, Prawdziwka 2, 02-973 Warsaw, Poland. tmol.ob@ihar.edu.pl
authors.forename: Katarzyna Joanna
authors.initials: KJ
authors.lastname: Chwedorzewska
authors.forename: Piotr Tomasz
authors.initials: PT
authors.lastname: Bednarek
authors.forename: Jerzy
authors.initials: J
authors.lastname: Puchalski
authors.forename: Paweł
authors.initials: P
authors.lastname: Krajewski
mesh_terms: D018070:Biological Specimen Banks; D018556:Crops, Agricultural / Q000235:genetics*; D016172:DNA Fingerprinting; D018744:DNA, Plant / Q000235:genetics*; D040961:Genetic Drift; D014644:Genetic Variation; D009154:Mutation; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D011309:Preservation, Biological; D012434:Secale / Q000235:genetics* / Q000254:growth & development; D036226:Seedlings; D012639:Seeds
chemical_list: D018744:DNA, Plant