Cookies Policy
X

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Autotoxicity as a cause for natural regeneration failure in Nyssa yunnanensis and its implications for conservation

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Israel Journal of Plant Sciences

Autotoxicity is known to regulate density-dependent intraspecific competition in plants, but at the same time due to the effects on regeneration and hence population size, it may have implications for conservation. Nyssa yunnanensis is an endangered plant species with extremely small populations. There are only eight wild individuals left in Yunnan Province, Southwestern China. The mechanism governing the restricted ability for surviving in their natural environment is not known. In order to understand the causes of endangerment and take effective conservation measures, in situ and laboratory experiments were carried out to examine the autotoxicity of N. yunnanensis. In situ field experiments demonstrated that seed germination of N. yunnanensis was significantly inhibited by both litter and seed capsule. Extracts of different organs of N. yunnanensis had significant negative effects on its seed germination, and the inhibition rate of root extracts (80.9%) was significantly higher compared with the leaves and stems. Seedling growth also was suppressed by extracts of different organs, whereas no significant differences were found in the root/shoot ratio. The degree of inhibition of both germination and seedling growth increased with extract concentration. Soil experiments demonstrated also that seed germination and seedling growth were suppressed in soil where N. yunnanensis had previously grown. The results suggest that N. yunnanensis may negatively affect its natural regeneration through autotoxic effects on seed germination and seedling growth. Conservation strategies should be dedicated to ameliorating the autotoxic effects and enhancing natural regeneration. These may include litter clearance, activated carbon addition, and managed relocation.

Affiliations: 1: Key Laboratory of Rare and Endangered Forest Plants of State Forestry Administration, Yunnan Academy of Forestry ; 2: Pu'er Forestry Research Institute ; 3: Kunming Arboretum of Yunnan Academy of Forestry

10.1080/07929978.2015.1064630
/content/journals/10.1080/07929978.2015.1064630
dcterms_title,pub_keyword,dcterms_description,pub_author
10
5
Loading
Loading

Full text loading...

/content/journals/10.1080/07929978.2015.1064630
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1080/07929978.2015.1064630
Loading

Article metrics loading...

/content/journals/10.1080/07929978.2015.1064630
2015-05-18
2017-11-18

Sign-in

Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
     
    Israel Journal of Plant Sciences — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation