Table of Contents
Advances in Biology
Volume 2014 (2014), Article ID 402309, 4 pages
http://dx.doi.org/10.1155/2014/402309
Research Article

Effects of Sucrose and Other Additives on In Vitro Growth and Development of Purple Coneflower (Echinacea purpurea L.)

1Department of Agricultural Biology, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya 81100, Sri Lanka
2Genetic Engineering Laboratory, College of Life Sciences, South China 510642, China

Received 20 February 2014; Revised 26 May 2014; Accepted 3 June 2014; Published 16 June 2014

Academic Editor: Stefan Liebau

Copyright © 2014 Dahanayake Nilanthi and Yue-Sheng Yang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Echinacea purpurea (purple coneflower) is being used for the preparation of more than 240 extracts, salves, and tinctures to help cure diseases like rabies, cold, and upper respiratory infections. Hence, efforts were made to develop a culture medium for successful in vitro culturing of cornflower and to regenerate buds and induce roots to enable mass propagation of selected clones. Of the three levels of sucrose tested as a supplement to MS media (Murashige and Skoog’s medium, 1962) 3% showed better rooting of buds and appeared morphologically normal and identical as compared to those grown at higher and lower concentrations (2 and 4%). The additives hydrolyzed lactabumin (0.0, 100, 300, and 900 mgL−1), peptone (0.0, 100, 300, and 900 mgL−1), and yeast (0.0, 100, 300, and 900 mgL−1) to media containing 0.3 mgL−1 BA (6-benzyladenine) and 0.01 mgL−1 NAA (naphthaleneacetic acid-plant growth regulators) has negatively influenced proliferation of shoots. The higher concentrations of the above have delayed the development of plantlets. Shoot multiplication was enhanced by coconut water with 2% being the best among 4 and 8% tested. Shoot organogenesis was not influenced by copper sulphate (0, 1.5, 3, 6, and 12 mgL−1) and silver nitrate (0.0, 0.5, 2.5, and 12.5 mgL−1) supplements and at higher concentrations of the above inhibited plant growth.