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Dihaploid plants of roses (Rosa x hybrida, cv Sonia) obtained by parthenogenesis induced using irradiated pollen and in vitro culture of immature seeds

Abstract : ’Sonia’ var rose ovules produced plants through in vitro culture after being pollinated with irradiated (gamma rays) pollen. A 500-Gy minimum dose was sufficient to inactivate pollen and induce in situ parthenogenesis; in vitro culture was necessary for embryo rescue. The dihaploid plants originated from small embryos which occupied only a part of the carpel cavity; they were clearly distinguished from tetraploid plants by miniaturization of all organs. The dihaploid plants were observed under glass-house conditions until flowering presented a normal gynoecium. They produced a small amount of pollen of reduced but regular size; growth and development were faster than the tetraploid controls in summer.
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  • HAL Id : hal-02703199, version 1
  • PRODINRA : 105410

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J. Meynet, R. Barrade, A. Duclos, R. Siadous. Dihaploid plants of roses (Rosa x hybrida, cv Sonia) obtained by parthenogenesis induced using irradiated pollen and in vitro culture of immature seeds. Agronomie, EDP Sciences, 1994, 14 (3), pp.169-175. ⟨hal-02703199⟩

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