Russian dandelion (<em>Taraxacum kok-saghyz</em>): one more example of overcollecting in the past?
AbstractTaraxacum kok-saghyz is a rubber producing plant that once was a strategie source of natural rubber in Soviet Union but with no current usage as a crop species. In this paper we 1) review the existing literature on kok-saghyz, most of which exists only in Russian; 2) describe kok-saghyz germplasm collecting undertaken in 2005 and 2006 and results of analysis for rubber content in the germplasm sampled. We found the kok-saghyz plants to be very rare in the area where they were common in the past and having very low rubber content. A reason may be overcollecting in general and especially of plants with high rubber content in the 1930ies to 1950ies of the last century.
From Volume 92 (2019) on, the content of the journal is licensed under the Creative Commons Attribution 4.0 License. Any user is free to share and adapt (remix, transform, build upon) the content as long as the original publication is attributed (authors, title, year, journal, issue, pages) and any changes are labelled.
The copyright of the published work remains with the authors. If you want to use published content beyond what the CC-BY license permits, please contact the corresponding author, whose contact information can be found on the last page of the respective article. In case you want to reproduce content from older issues (before CC BY applied), please contact the corresponding author to ask for permission.