Ploidy levels and reproductive behaviour in invasive Hieracium pilosella in Patagonia

By

Krahulec, František
Krahulcova, Anna, 1951-

Type

Article

Date of Publication

2011

Original Publication

NeoBiota : advancing research on alien species and biological invasions

Volume

11

Pages

25-31

Subjects

clonal structure , Hieracium pilosella , hybridisation , Patagonia , ploidy levels

Contributed by

Pensoft Publishers

Language

English

Published by

Sophia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/neobiota.11.1349

 

Abstract

Within a population of invasive Hieracium pilosella in Chilean Patagonia we found two ploidy levels, pentaploid and hexaploid. Each ploidy level was represented by one clone. Their reproductive system was apomictic (and thus replicating the maternal genome), with a low degree of residual sexuality. It is necessary to prevent the evolution of new biotypes via hybridisation with different clones of H. pilosella or other Hieracium species introduced into Patagonia.