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Improved germination of threatened medicinal Prunus africana for better domestication: effects of temperature, growth regulators and salts

  • Justine Germo Nzweundji
  • Koffi Konan
  • Leopold M. Nyochembeng
  • Nehemie Donfagsiteli Tchinda
  • Nicolas NiemenakEmail author
Original Paper
  • 6 Downloads

Abstract

Prunus africana is an endangered medicinal species and has been classified as a priority for domestication in Cameroon. However, the seeds rapidly lose their viability during storage at room temperature after 2–3 months. This study aimed to improve seed germination of P. africana by germinating at different temperatures (4 °C, 28 °C) using different concentrations of growth stimulators (sodium nitrate and gibberellic acid) and different concentrations of salts. P. africana seeds had 91.7% germination at 4 °C after 1 month of storage. Growth regulators considerably influenced germination after 6 months and reached 66.0% with 10 mM gibberellic acid and 100% with 10 mM sodium nitrate. Approximately three shoots per seed were developed, an indication of polyembryony. Histochemical analyses revealed the presence of protein-like bodies close to the embryo axis and accumulations of starch after 7 days of germination. After 14 days, amyloplasts and dark protein bodies of various sizes were observed. The outcome of this study will contribute to improve the germination of P. africana for better domestication and conservation.

Keywords

Conservation Germination Growth regulators Histochemical analyses Prunus africana Temperature 

Notes

Acknowledgements

This work was supported by The Rufford Small Grants Foundation to Niemenak Nicolas (RSG Ref. 70.05.09) and by the UNESCO l’Oreal Fellowship for Women in Science Program to Nzweundji Justine Germo. The Alexander von Humboldt Foundation is also acknowledged for material donation to Niemenak Nicolas.

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Copyright information

© Northeast Forestry University 2019

Authors and Affiliations

  • Justine Germo Nzweundji
    • 1
    • 2
  • Koffi Konan
    • 3
  • Leopold M. Nyochembeng
    • 4
  • Nehemie Donfagsiteli Tchinda
    • 2
  • Nicolas Niemenak
    • 1
    Email author
  1. 1.Department of Biological Science, Higher Teacher Training CollegeUniversity of Yaounde IYaoundéCameroon
  2. 2.Centre for Research on Medicinal Plants and Traditional MedicineInstitute of Medical Research and Medicinal Plants Studies (IMPM)YaoundéCameroon
  3. 3.IngateyGen LLCElizabeth CityUSA
  4. 4.Department of Natural Resources and Environmental SciencesAlabama A&M UniversityHunstvilleUSA

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