Journal article
Breeding behaviour of Kunzea pomifera (Myrtaceae): Self-incompatibility, intraspecific and interspecific cross-compatibility
Sexual Plant Reproduction, Vol.23(3), pp.239-253
2010
Abstract
To examine breeding system characteristics of the endemic Australian prostrate shrub Kunzea pomifera, artificial hybridisations were undertaken using thirteen different genotypes of K. pomifera, to elucidate: (1) self-incompatibility, (2) intraspecific cross-compatibility in the species and (3) interspecific cross-compatibility with each of K. ambigua and K. ericoides. K. pomifera exhibited very low self-compatibility, with the barrier to self-fertilisation being prevention of pollen-tube growth in the style or ovary. Following intraspecific pollination amongst a number of different genotypes of K. pomifera, 38.4% of pollinated flowers developed fruit; arrest of compatible pollen-tubes in the style, preventing fertilisation, contributes to the low fruit set in this species. Interspecific compatibility was examined between K. pomifera (pistillate parent) and K. ambigua (staminate parent) where seed set per pollinated flower (4.47) was not significantly different from intraspecific crosses (4.66). In crosses between K. pomifera (pistillate parent) and K. ericoides as staminate plant, 0.037% of pollinated flowers produced fruit, with 0.0075 seeds per pollinated flower. Reproductive barriers between these two species were evident in the style of K. pomifera, where the growing tips of the K. ericoides pollen-tubes swelled and ceased to grow. © 2010 Springer-Verlag.
Details
- Title
- Breeding behaviour of Kunzea pomifera (Myrtaceae): Self-incompatibility, intraspecific and interspecific cross-compatibility
- Authors
- Tony Page (Author) - James Cook UniversityG M Moore (Author) - University of MelbourneJ Will (Author) - University of MelbourneG M Halloran (Author) - University of Melbourne
- Publication details
- Sexual Plant Reproduction, Vol.23(3), pp.239-253
- Publisher
- Springer
- Date published
- 2010
- DOI
- 10.1007/s00497-010-0133-0
- ISSN
- 0934-0882
- Organisation Unit
- Australian Centre for Pacific Islands Research; Tropical Forests and People Research Centre; University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute
- Language
- English
- Record Identifier
- 99449141702621
- Output Type
- Journal article
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