Abstract
The production of 2n-gametes (meiotic polyploidization) occurs in many species, because of irregularities in meiotic division. The frequency of 2n-gametes is naturally extremely low, but can be influenced by environmental conditions like high temperatures and by selecting the most suitable genotypes. In our lily breeding research programme 2n-gamete producers were traced by crossing a series of diploid Asiatic hybrids with tetraploid parents. Over 500 of these (4x x 2x) and (2x x 4x) crosses resulted in a dozen tetraploid seedlings. One genotype ‘Connecticut King’ appeared especially responsible for this result. Therefore this hybrid was used to study the influence of temperature on the production of 2n-gametes. In the temperature range going from 14°, 18°, 22° to 26°C an increasing percentage dyads in the pollen mother cells was found, indicating the formation of 2n-gametes.
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© 1988 Springer-Verlag Berlin Heidelberg
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van Tuyl, J.M., Stekelenburg, P. (1988). Genotypic and Environmental Variation in Production of 2n-Gametes in Lilium. In: Cresti, M., Gori, P., Pacini, E. (eds) Sexual Reproduction in Higher Plants. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-73271-3_98
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DOI: https://doi.org/10.1007/978-3-642-73271-3_98
Publisher Name: Springer, Berlin, Heidelberg
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