GERMINATION OF CACTI SPECIES UNDER RISK STATUS OF THE CHIHUAHUAN DESERT
DOI:
https://doi.org/10.29298/rmcf.v2i8.539Keywords:
Cactaceae, seed dormancy, germination, seed scarification, desert plants, seedsAbstract
A synthesis of the main results of seed germination of 28 cacti under risk status and 4 without risk from the Chihuahuan Desert is presented here. The effect on germination of dormancy, light, seed age, seed competition and seed size were assessed. Three out of 17 taxa of the genus Turbinicarpus showed dormancy and two of them lost dormancy with age. Two Opuntia species also lost dormancy with age, aided by the presence of fungus that scarified the seed coat. From 28 cacti species at risk, 17 were dormant (germination ≤ 70%); and 1 non-dormant species were positive photoblastic that had small seeds (<1 mg). From the germination of two endemic columnar species, Isolatocereus dumortieri reduced germination at higher seed densities, while that of Myrtillocactus geometrizans was unaffected by seed density. 4 yr old small seeds from threatened Astrophytum myriostigma germinated faster and at higher per cent than large seeds. Future research lines are suggested to get a better understanding of cacti seed dynamics in current and future conditions in order to contribute to the preservation of these plants.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
The authors who publish in Revista Mexicana de Ciencias Forestales accept the following conditions:
In accordance with copyright laws, Revista Mexicana de Ciencias Forestales recognizes and respects the authors’ moral right and ownership of property rights which will be transferred to the journal for dissemination in open access.
All the texts published by Revista Mexicana de Ciencias Forestales –with no exception– are distributed under a Creative Commons License Attribution-NonCommercial 4.0 International (CC BY-NC 4.0), which allows third parties to use the publication as long as the work’s authorship and its first publication in this journal are mentioned
The author(s) can enter into independent and additional contractual agreements for the nonexclusive distribution of the version of the article published in Revista Mexicana de Ciencias Forestales (for example, include it into an institutional repository or publish it in a book) as long as it is clearly and explicitly indicated that the work was published for the first time in Revista Mexicana de Ciencias Forestales.
For all the above, the authors shall send the form of Letter-transfer of Property Rights for the first publication duly filled in and signed by the author(s). This form must be sent as a PDF file to: ciencia.forestal2@inifap.gob.mx
This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 International license.