Improved Micropropagation of Plantlets from Nodal Explants of Anchote (Coccinia abyssinica)—A Calcium- and Protein-rich Tuber uri icon

abstract

  • The effect of phytohormones on breaking of dormancy of axillary buds in anchote and their subsequent shoot proliferation were examined. Anchote is an annual trailing endemic plant with high calcium content grown for its edible tuberous roots in Ethiopia. Nodal explants harvested from the greenhouse were sterilized using various concentrations of a commercial bleach (JIK) which contains 3.85% sodium hypochlorite (NaOCl) and time duration. The highest (85%) clean explants were obtained when 5% JIK was used for 15 minutes. The explants were cultured on Murashige and Skoog (MS) medium supplemented with various concentrations of benzylaminopurine (BAP), kinetin, and thidiazuron (TDZ). The highest frequency of microshoot induction (84%) and mean number of microshoots (3.4) were recorded from explants cultured on medium supplemented with TDZ 0.025 mu m. Hyper hydrated shoots were observed on media supplemented with high concentrations of BAP and kinetin but interestingly not on TDZ media. Induction of roots was highest (86%; 4.6 roots per shoot) when shoots were transferred to half strength MS medium containing 0.5 mu m alpha-naphthalene acetic acid (NAA) after 12 days. A survival rate of 83% was recorded in the greenhouse and the plantlets appeared to be morphologically normal. This is the first report on use of TDZ for in vitro propagation of anchote.

publication date

  • 2016
  • 2016