The generation of novel species hybrids between garden dahlias and Dahlia macdougallii to increase the gene pool for variety breeding

verfasst von

Stephan Schie, Thomas Debener

Abstract

To transfer new traits into the gene pool of garden dahlias (Dahlia variabilis), crosses between garden dahlias (2n = 64) and the epiphytic species Dahlia macdougallii (2n = 32) from the section Epiphytum were conducted. Six hybrid plants were obtained. The hybrid status was verified using three SSR markers. In addition, flow cytometry was performed to determine the genome size of the hybrids and to show that the hybrids were hexaploid as expected from crosses between tetraploids and octoploids. The open pollinated progeny of the hybrids produced four progeny with octoploid genomes. The hybrids exhibited indeterminate vegetative growth and the formation of flowers from axillary buds, similar to the father D. macdougallii. This result is of interest for breeding new varieties of dahlia with traits that are not present in the current gene pool.

Organisationseinheit(en)

Institut für Pflanzengenetik
Abteilung Molekulare Pflanzenzüchtung

Typ

Artikel

Journal

PLANT BREEDING

Band

132

Seiten

224-228

Anzahl der Seiten

5

ISSN

0179-9541

Publikationsdatum

04.2013

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Agronomie und Nutzpflanzenwissenschaften, Genetik, Pflanzenkunde

Elektronische Version(en)

https://doi.org/10.1111/pbr.12034 (Zugang: Unbekannt)