Abstract

Roses constitute one of the most important ornamental plant crops. Recently an increasing interest has been noted also for the fruits; rose hips. Plant breeding of dogroses (section Caninae) is complicated by their unique meiosis with an unequal distribution of chromosomes, which results in strongly matroclinal offspring. Disease resistance was evaluated for blackspot, leaf spot, powdery mildew and rust in 649 field-grown offspring from eleven families. One genotype of Rosa dumalis and two of R. rubiginosa were used as pistillate parents and six selected genotypes derived from open pollination of 'Uralskij Champion' were used as pollinate parents. Blackspot was the most serious disease, followed by leaf spot, whereas powdery mildew and rust were rare. Significant differences between families with different staminate parents were found for blackspot, leaf spot and powdery mildew, indicating the possibility to select for resistance to these diseases in seedlings from crosses involving section Caninae in spite of the Canina meiosis. (c) 2004 Elsevier B.V. All rights reserved

Published in

Scientia Horticulturae
2005, Volume: 104, number: 4, pages: 493-504
Publisher: ELSEVIER SCIENCE BV

SLU Authors

• Uggla, Madeleine

  • Department of Crop Science, Swedish University of Agricultural Sciences
    

• Carlson-Nilsson, Ulrika

  • Department of Crop Science, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Horticulture


Publication identifier

DOI: https://doi.org/10.1016/j.scienta.2004.11.001

Permanent link to this page (URI)

https://res.slu.se/id/publ/5760