Evaluation of different madder genotypes (Rubia tinctorum L.) for dyestuff production

Rubia accessions, derived from different locations in the wild flora of Turkey and from Western Europe, have been described by different morphological characteristics, root yield and dye content. Plants from the Turkish location of Cesme have already been selected by means of root yield. The database was computed by cluster- and factor-analysis. Compared to the genotypes from Cesme and Western Europe, the plants from the Turkish location of Usak are low growing with small leaves and numerous shoots. They show good values for root yield and dye content, although no selection steps have been done before. © 2002 by The Haworth Press, Inc. All rights reserved.