Introgression of yellow flower colour in Buddleja davidii by means of polyploidisation and interspecific hybridisation

K. Van Laere, J. Van Huylenbroeck, E. Van Bockstaele

Research output: Contribution to journalA1: Web of Science-articlepeer-review

Abstract

Van laere k., Van huylenbroeck j., Van bockstaele e., 2011. Introgression of yellow flower colour in buddleja davidii by means of polyploidisation and interspecific hybridisation. Hort. Sci. (Prague), 38: 96-103. To introduce yellow colour in the commercial buddleja davidii (2N = 4x = 76) Assortment, an interspecific breeding programme with b. Globosa (2N = 2x = 38) Was started. The first step was to perform chromosome doubling in b. Globosa. Two of the obtained tetraploid b. Globosa plants were subsequently used as male parent in interspecific crosses with the white flowering b. Davidii cv. Nanhoensis alba. In total 182 interspecific crosses were made and 18 f1 hybrids were obtained. Genome size measurements, chromosome counts and genomic in situ hybridisation (Gish) Analysis proved the hybrid nature of most of the f1 hybrids. Plant morphology also expressed hybrid characteristics. F1 seedlings inherited the yellowish flower colour from b. Globosa. As for many other woody ornamentals, the creation of hybrids through interspecific hybridisation along with polyploidisation offers new opportunities for breeding in buddleja
Original languageEnglish
JournalEuropean Journal of Horticultural Science
Volume38
Issue number3
Pages (from-to)96-103
Number of pages8
ISSN1611-4426
Publication statusPublished - 2011

Keywords

  • AGRICULTURE
  • Belgium
  • Breeding
  • BUDDLEJA
  • chromosome number
  • CHROMOSOMES
  • COUNTS
  • CROSS
  • CROSSES
  • CULTURE
  • F1 hybrids
  • flower colour
  • genome size
  • GENOMES
  • genomic in situ hybridisation (GISH)
  • GROWTH
  • HYBRID
  • Hybridisation
  • HYBRIDS
  • IN-SITU
  • interspecific hybridisation
  • morphology
  • ornamental breeding
  • ornamentals
  • PLANT
  • PLANT MORPHOLOGY
  • PLANTS
  • Polyploidisation
  • SEEDLINGS
  • SIZE
  • tetraploid

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