Results 11 to 20 of about 1,298 (173)
Early evolutionary history of the seed. [PDF]
Biol Rev Camb Philos SocABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Bateman RM, Spencer ART, Hilton J.
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Ceratozamia dominguezii (Zamiaceae): A New Cycad Species from Southeastern Mexico
Taxonomy, 2021 Ceratozamia dominguezii (Zamiaceae), a new species endemic to the lowland karstic tropical rainforests of southeastern Veracruz, Mexico, is described. The new species is part of the C.
Miguel Angel Pérez-Farrera +4 more
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Ecology and Evolution, 2021 Latitude is correlated with environmental components that determine the distribution of biodiversity. In combination with geographic factors, latitude‐associated environmental variables are expected to influence speciation, but empirical evidence on how ...
José Said Gutiérrez‐Ortega +11 more
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Testing protocols to optimize DNA extraction from tough leaf tissue: A case study in Encephalartos
Applications in Plant Sciences, 2023 Premise Plants with stiff, leathery leaves pose a challenge for standard DNA extraction protocols. These tissues are recalcitrant to mechanical disruption via TissueLyser (or analogous devices) and are often high in secondary metabolites.
Maia M. Jones +2 more
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Propagation of Cycad Collections from Seed
Sibbaldia, 2011 Propagation of cycads from seed can aid their conservation as it helps reduce the demand for wildcollected plants. Seed-produced plants can be used for reintroduction programmes if the parent plants are from known provenance and care is taken to avoid ...
Michael Calonje +2 more
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Ceratozamia schiblii (Zamiaceae): A New Cycad Species from the Eastern Mountains of Oaxaca, Mexico
Taxonomy, 2022 Ceratozamia schiblii (Zamiaceae), a new species endemic to the highlands of eastern Oaxaca, Mexico, is described. The new species is part of the C. robusta species complex, which is a group of closely related species with very similar morphology.
Miguel Angel Pérez-Farrera +6 more
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Ethnobotany of Mexican and northern Central American cycads (Zamiaceae)
Journal of Ethnobiology and Ethnomedicine, 2019 Background This study documents cycad-human relationships in Mexico, Belize, Guatemala, El Salvador, and Honduras over the last 6000 years. The impetus was acute need for a better understanding of previously undocumented uses of cycads in this region ...
Mark Bonta +5 more
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Acta Palaeobotanica, 2014 New compression leaf material of Ceratozamia (Zamiaceae) has been recognised in the European Cenozoic. A leaflet of Ceratozamia floersheimensis (Engelhardt) Kvaček was recovered among unidentified material from the Oligocene of Trbovlje, former Trifail ...
Kvaček Zlatko
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Carbohydrates, pollinators, and cycads [PDF]
Communicative & Integrative Biology, 2015 Cycad biology, ecology, and horticulture decisions are not supported by adequate research, and experiments in cycad physiology in particular have been deficient. Our recent report on free sugar content in a range of cycad taxa and tissues sets the stage for developing continued carbohydrate research. Growth and development of cycad pollen, mediation of
Marler, Thomas E, Lindström, Anders J
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Mitochondrial DNA. Part B. Resources, 2021 In this study, we determined the complete chloroplast genome of Cycas hongheensis (Cycadaceae), one of the first-class protected plants in China. The chloroplast genome is 162,048 bp in length with 133 genes, including 87 protein-coding genes, eight ...
Li-Xin Wu, Yue-Hua Wang, Xun Gong
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