Abstract
The aim of the study was to optimize the method of oat haploid production by pollination with maize. Seventeen oat genotypes were used in the experiment. Various factors influencing the growth and development of ovaries and embryo production were investigated: genotype, time of pollination, growth regulators and time of their application. Emasculated before anthesis, oat florets were pollinated with maize pollen after 0, 1 or 2 days. Next, one of two auxins analogues (2,4-D or dicamba) were applied to oat pistils. These auxins had no significant influence on the number of enlarged ovaries and embryos. The time of application of these growth regulators had a significant influence on embryo production. Haploid embryos were obtained from all used genotypes, although the frequency of enlarged ovaries and obtained embryos did not differ markedly between the genotypes. On average, 85% of ovaries were enlarged and 11.7% of them produced haploid embryos. Depending on the regeneration medium, 24–41% of embryos were germinated, of which 12% had developed into green plants. A strong significant difference in the number of germinating embryos and haploid plants was observed between the kind of regenerating medium used. There were no albino plants and all the obtained plants were haploid.
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Abbreviations
- 2,4-D:
-
2,4-dichlorophenosyacetic acid
- dicamba:
-
3,6-dichloro-2-methoxybenzoic acid
- DH:
-
double haploid
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Marcińska, I., Nowakowska, A., Skrzypek, E. et al. Production of double haploids in oat (Avena sativa L.) by pollination with maize (Zea mays L.). cent.eur.j.biol. 8, 306–313 (2013). https://doi.org/10.2478/s11535-013-0132-2
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DOI: https://doi.org/10.2478/s11535-013-0132-2