search
for
 About Bioline  All Journals  Testimonials  Membership  News  Donations


African Journal of Traditional, Complementary and Alternative Medicines
African Ethnomedicines Network
ISSN: 0189-6016
Vol. 11, No. 2, 2014, pp. 330-333
Bioline Code: tc14052
Full paper language: English
Document type: Short Communication
Document available free of charge

African Journal of Traditional, Complementary and Alternative Medicines, Vol. 11, No. 2, 2014, pp. 330-333

 en GA3-MEDIATED DORMANCY ALLEVIATION IN THE REPUTED AFRICAN POTATO, HYPOXIS HEMEROCALLIDEA check for this species in other resources
Shaik, Shakira; Govender, Kesigan & Leanya, Moeketsi

Abstract

Background: Hypoxis hemerocallidea check for this species in other resources , arguably the most well-known medicinal species in South Africa, has been the subject of intensive harvesting from the wild leading to recent conservation concerns. The seeds of this species do not propagate easily and can lie dormant for up to twelve months.
Materials and Methods: In the in vitro germination experiments water, acid and chemical pre-sowing treatments were performed to determine the germination response of this species in both light and dark conditions. In the ex vitro experiment, intact seeds were sown and left to germinate in a potting soil mix under greenhouse conditions.
Results: Highest levels of germination (36.7-60.0% in the light and 36.7-46.7% in the dark) were achieved by treating mechanically scarified seeds with GA3 at various concentrations for 24 h. This was followed by scarified seeds soaked in water (26.7% in the light and 23.3% in the dark). Similar results (23.3 and 26.7%) were obtained in the 1% and 4% KNO3 treatments, respectively, under light conditions only. The fastest time to germinate was two days and was obtained in the 1200 ppm GA3 treatment in both light and dark conditions. Ex vitro germination of H. hemerocallidea seeds under greenhouse conditions was unsuccessful.
Conclusion: H. hemerocallidea displays physical and non-deep physiological dormancy where pre-sowing treatments are required before the seeds will germinate.

Keywords
medicinal plant; dormancy; GA3; pre-sowing

 
© African Journal of Traditional, Complementary and Alternative Medicines
Alternative site location: http://journals.sfu.ca/africanem/index.php/ajtcam

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2017, Site last up-dated on 05-Dec-2017.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Internet Data Center of Rede Nacional de Ensino e Pesquisa, RNP, Brazil