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Theoretical and Applied Genetics

, Volume 103, Issue 4, pp 555–560 | Cite as

Hybridisation between Brassica napus L. and Raphanus raphanistrum L. under agronomic field conditions

  • M. A. Rieger
  • T. D. Potter
  • C. Preston
  • S. B. Powles

Abstract 

The frequency of hybridisation between Brassica napus L. and Raphanus raphanistrum L. under agronomic conditions was assessed in field experiments, where R. raphanistrum were randomly planted at two different densities into large plots of B. napus. An acetolacate synthase (ALS)-inhibiting herbicide-resistant trait was used to detect potential hybrid individuals. No hybrids were detected amongst 25,000 seedlings grown from seed collected from R. raphanistrum plants. Two hybrids were obtained from more than 52-million B. napus seedlings. Both hybrids were characterised as amphidiploids (AACCRrRr, 2n = 56) and were fertile. The frequency of hybridisation into B. napus in this experiment using male-fertile B. napus was 4 × 10–8.

Keywords Brassica napus Raphanus raphanistrum Hybridisation rate Agronomic conditions 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • M. A. Rieger
    • 1
  • T. D. Potter
    • 2
  • C. Preston
    • 3
  • S. B. Powles
    • 4
  1. 1.CRC for Weed Management Systems and Department of Applied and Molecular Ecology, Waite campus, Adelaide University PMB 1, Glen Osmond SA 5064, Australia e-mail: mary.rieger@adelaide.edu.auAU
  2. 2.South Australian Research and Development Institute, Struan Research Station, Naracoorte SA 5271, AustraliaAU
  3. 3.CRC for Weed Management Systems and Department of Applied and Molecular Ecology, Waite campus, Adelaide University PMB 1, Glen Osmond SA 5064, AustraliaAU
  4. 4.Western Australian Herbicide Resistance Initiative, University of Western Australia, Nedlands, Perth WA 6907, AustraliaAU

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