title: A note on the measurement of genetic diversity within genebank accessions of lettuce (Lactuca sativa L.) using AFLP markers.
abstract: This paper discusses a statistical approach for measuring genetic diversity within genebank accessions of a self-fertilising species. This approach is applied to lettuce (Lactuca sativa L.), using AFLP marker data on a set of 1,390 accessions, representing six different lettuce types. Knowledge of the within-accession genetic diversity is important for decisions about the way accessions have to be maintained by genebanks. It is argued that if the within-accession diversity is small, as can be expected for a self-fertilising species like L. sativa, the best approach is to sample as many accessions as possible with only two plants per accession and estimate the within-accession diversity by the proportion of accessions of which the individuals are different.
authors.affiliation: Biometris, P.O. Box 100, 6700 AC, Wageningen, The Netherlands. johannes.jansen@wur.nl
authors.forename: J
authors.initials: J
authors.lastname: Jansen
authors.forename: H
authors.initials: H
authors.lastname: Verbakel
authors.forename: J
authors.initials: J
authors.lastname: Peleman
authors.forename: Th J L
authors.initials: TJ
authors.lastname: van Hintum
mesh_terms: D018744:DNA, Plant; D005819:Genetic Markers; D014644:Genetic Variation; D018545:Lactuca / Q000145:classification* / Q000235:genetics*; D008433:Mathematics; D011110:Polymorphism, Genetic; D019105:Random Amplified Polymorphic DNA Technique; D013045:Species Specificity
chemical_list: D018744:DNA, Plant; D005819:Genetic Markers