• double
  • Double fertilization was discovered more than a century ago by Sergei Nawaschin in Kiev, Russian Empire, and Léon Guignard in France. (wikipedia.org)
  • Lilium martagon and Fritillaria tenella were used in the first observations of double fertilization, which were made using the classical light microscope. (wikipedia.org)
  • Due to the limitations of the light microscope, there were many unanswered questions regarding the process of double fertilization. (wikipedia.org)