Results 41 to 50 of about 209 (128)

Progress in the study of dioecy in Mexican cycad species and its implications for conservation

Plant Species Biology, Volume 40, Issue 6, Page 556-571, November 2025.
Cycads are endangered dioecious plants of great ornamental value that have a long period of sexual maturity. Therefore, it is crucial to have methods for early sex determination that can help to develop effective strategies for their conservation. Abstract Dioecy is a system of sexual reproduction in plants, characterized by the spatial separation of ...
Lourdes Georgina Iglesias Andreu, María Ydelia Sánchez‐Tinoco, Miguel Angel Perez‐Farrera   +2 more
wiley   +1 more source

Conceptos taxonómicos, fenología y epifitismo: el caso de Ceratozamia tenuis (Zamiaceae)

Revista Mexicana de Biodiversidad, 2018
En este estudio abordamos la identidad taxonómica de Ceratozamia tenuis (Dyer) D. W. Stev. & Vovides, 2016, un binomio que históricamente ha estado relacionado con el concepto taxonómico de C. mexicana Brongn., 1846. Describimos los estadios fenológicos
Lilí Martínez-Domínguez, Fernando Nicolalde-Morejón, Dennis W. Stevenson, Quiyari Santiago-Jiménez   +3 more
doaj   +1 more source

Preface of Special Feature “Current topics on cycad biology: Deciphering the Rosetta Stone of plant evolution.” Part II: Perspectives from natural history

Plant Species Biology, Volume 40, Issue 6, Page 527-529, November 2025.
Often regarded as “living fossils,” cycads are well known for retaining many ancestral traits, which makes them particularly fascinating to naturalists and scientists alike. Cycads provide insights into the functional and developmental processes underlying the origin and diversification of seed plants, and they may help clarify how they colonized the ...
José Said Gutiérrez‐Ortega
wiley   +1 more source

A new species of Ceratozamia (Zamiaceae, Cycadales) from Veracruz, Mexico [PDF]

Botanical Journal of the Linnean Society, 2003
Ceratozamia huastecorum sp. nov. is from an isolated meseta or tepui-like mountain in the Huasteca region of northern Veracruz State, Mexico. It has affinity to C. morettii Vazq.Torres & Vovides from the Mexican transvolcanic mountain range, which lies over 200 km to the south.
SERGIO AVENDAÑO, ANDREW P. VOVIDES, GONZALO CASTILLO-CAMPOS   +2 more
openaire   +1 more source

Population genetics of Zamia decumbens (Zamiaceae, Cycadales), an endangered cycad from the Maya Mountains of Belize

Plant Species Biology, Volume 40, Issue 4, Page 324-340, July 2025.
We utilized 10 microsatellite loci to examine the genetic diversity, genetic structure, and demographic history of Zamia decumbens Calonje, Meerman, M.P. Griff. & Hoese, an endangered cycad species occurring in small disjunct populations on karst topography within the Maya Mountains of Belize.
Michael Calonje, Alan W. Meerow, Jan Meerman, Javier Francisco‐Ortega, M. Patrick Griffith   +4 more
wiley   +1 more source

Sex ratio and spatial distribution of Cycas panzhihuaensis in Sichuan Panzhihua cycad National Nature Reserve

Plant Species Biology, Volume 40, Issue 4, Page 354-365, July 2025.
The sex ratio of the endemic gymnosperm Cycas panzhihuaensis is determined by the potential sex‐determining gene MADS‐Y. The study examined the sex dimorphism and spatial distribution of male and female individuals. The genotypic sex ratio of the C. panzhihuaensis population is balanced. Additionally, there is a significant clustering effect in spatial
Yong‐Qiong Yang, Lei‐Lei Yang, Jiang‐Bin Lin, Jing‐Ru Xiang, Bin Zhou, Huan Li, Shao‐Wei Ma, Ling‐Fei Li, Shou‐Zhou Zhang   +8 more
wiley   +1 more source

Chemical Element Concentrations of Cycad Leaves: Do We Know Enough?

Horticulturae, 2020
The literature containing which chemical elements are found in cycad leaves was reviewed to determine the range in values of concentrations reported for essential and beneficial elements.
Benjamin E. Deloso, Murukesan V. Krishnapillai, Ulysses F. Ferreras, Anders J. Lindström, Michael Calonje, Thomas E. Marler   +5 more
doaj   +1 more source

Evolutionary and ecological trends in the Neotropical cycad genus Dioon (Zamiaceae): An example of success of evolutionary stasis

Ecological Research, Volume 39, Issue 2, Page 131-158, March 2024.
Cycads represent an example of the success of evolutionary stasis. Despite its conservative nature, the cycad genus Dioon has been able to diversify due to phylogenetic, stochastic, and environmental factors associated with the biogeography of Mexico. Abstract Cycads represent an example of the success of evolutionary stasis. Despite their early origin,
José Said Gutiérrez‐Ortega, Miguel Angel Pérez‐Farrera, Mitsuhiko P. Sato, Ayumi Matsuo, Yoshihisa Suyama, Andrew P. Vovides, Francisco Molina‐Freaner, Tadashi Kajita, Yasuyuki Watano   +8 more
wiley   +1 more source

Caterpillars of Eumaeus childrenae (Lepidoptera: Lycaenidae) feeding on two species of cycads (Zamiaceae) in the Huasteca region, Mexico

Revista de Biología Tropical, 2003
There are few genera of butterflies that feed on cycads. Among them the genus Eumaeus (Lycaenidae) presents aposematic coloration in all its life stages.
Raúl Contreras-Medina, Carlos A. Ruiz-Jiménez, Isolda Luna Vega   +2 more
doaj  

A modification to the SCAR (Sequence Characterized Amplified Region) method provides phylogenetic insights within Ceratozamia (Zamiaceae)

Revista Mexicana de Biodiversidad, 2015
Phylogenetic relationships among closely related plant species is still problematic. DNA intergenic regions often are insufficiently variable to provide desired resolution or support.
Dolores Gonzalez Hernandez
doaj   +1 more source