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Theoretical and Applied Genetics

, Volume 76, Issue 3, pp 393–397 | Cite as

The production of haploid wheat plants from wheat x maize crosses

  • D. A. Laurie
  • M. D. Bennett
Article

Summary

Hybrid embryos from hexaploid wheat x maize crosses rapidly lose the maize chromosomes to produce haploid wheat embryos. Such embryos almost always aborted when left to develop on the plant, and only 1 was recovered from 2440 florets (0.17% of the expected number). Embryos had greater viability in spikelet culture, 47 (26.5% of the expected number) being recovered from 706 ovaries. Thirty-two of these embryos germinated to give green plants, 31 of which were haploid (21 wheat chromosomes) and 1 of which was euploid (42 wheat chromosomes). Spikelet culture enabled 17.1% of the expected number of embryos to be recovered as haploid plants, a 100-fold improvement on allowing embryos to develop in vivo. Ten haploid plants of ‘Chinese Spring’ (kr1, kr2), 13 plants of ‘Chinese Spring (Hope 5A)’ (kr1, Kr2), and 8 of ‘Hope’ (Kr1, Kr2) were recovered. The potential of wheat x maize crosses for wheat haploid production and for gene transfer from maize to wheat is discussed.

Key words

Wheat Maize Wide-crosses Embryo culture Haploids 

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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • D. A. Laurie
    • 1
  • M. D. Bennett
    • 1
  1. 1.Cambridge LaboratoryAFRC Institute of Plant Science ResearchTrumpingtonUK

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