Genetic relationships in Chaenomeles (Rosaceae) revealed by isozyme analysis

Abstract

Genetic relationships were studied among four taxa in the genus Chaenomeles using isozyme analysis. The band patterns obtained with six polymorphic isozyme systems provided 108 reliable markers, which were scored as unordered multistate traits. A cluster analysis as well as a multidimensional scaling analysis grouped the taxa in agreement with previously published results obtained with RAPD (random amplified polymorphic DNA) analysis; C. japonica and C. cathayensis were the most distantly related species, whereas C. speciosa took an intermediate position together with the hybrid taxon C. x superba. Similarity matrices obtained with isozymes and RAPDs, respectively, were closely correlated, r = 0.74. The previously noted low level of RAPD variability in C. cathayensis was indicated also with isozymes. However, the isozyme data were less efficient than the RAPD data for intraspecific grouping of the genotypes according to the origin of the plant material. (C) 2000 Elsevier Science B.V. All rights reserved.

Keywords

Rosaceae; Chaenomeles; genetic diversity; isozymes; RAPD; quince

Published in

Scientia Horticulturae
2000, volume: 85, number: 1-2, pages: 21-35
Publisher: ELSEVIER SCIENCE BV

SLU Authors

• Gustavsson, Larisa

  • Department of Horticultural Plant Breeding, Swedish University of Agricultural Sciences
    
  • Institute of Horticulture

• Rumpunen, Kimmo

  • Department of Horticultural Plant Breeding, Swedish University of Agricultural Sciences
    

• Bartish, Igor

  • Department of Horticultural Plant Breeding, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Horticulture

Publication identifier

• DOI: https://doi.org/10.1016/S0304-4238(99)00122-3

Permanent link to this page (URI)

https://res.slu.se/id/publ/43603