Results 91 to 100 of about 8,311 (229)
Missouri Botanical Garden's cycad collection: A journey through time
This article summarizes the history of the Missouri Botanical Garden's extensive cycad collection. Some of the specimens currently housed in the living collections date back well over 100 years. Cycads continue to face a myriad of threats in the wild, and their conservation in ex situ collections is of critical importance to assist in their survival ...
Benjamin E. Deloso +3 more
wiley +1 more source
Introduction à la végétation, à la flore et aux noms vernaculaires de l'île de Pentecôte (Vanuatu) [PDF]
The authors bring here all the constituents of an ethnobotanical and ethnolinguistic study of the native and introduced plants of Pentecost Island (Vanuatu).Les auteurs apportent ici tous les éléments d'une étude ethnobotanique et ethnolin- guistique des
Cabalion, Pierre, Morat, Philippe
core +1 more source
Background: Nuclear ribonucleoprotein particles play a key role in RNA processing and in the gene expression pathway. Interchromatin granules (GICs) involved in the metabolism of pre-messenger RNA (pre-mRNA) were described in Allium cepa and ...
Lourdes-Teresa Agredano-Moreno +3 more
doaj +1 more source
Spatial distribution pattern were studied for Ceratozamia fuscoviridis, an endangered species in Mexico, based on Ripley's K t and K 12 analysis. Clumped spatial distribution patters was found in individuals of all populations, suggesting low interaction with predators/dispersers and/or evidence of suitable microsites for cycads.
María Teresa Pulido Silva +4 more
wiley +1 more source
Historical geology, climatic oscillations, and seed dispersal capabilities are thought to influence the population dynamics and genetics of plants, especially for distribution-restricted and threatened species.
Xin-Hui Wang +7 more
doaj +1 more source
Fresh and Dry Weight Relations Are Predictors of Cycas micronesica Seed Age
Cycas micronesica is a foundation species in several Micronesian islands and its seeds have been a historical source of starch for the island residents.
Thomas E. Marler, Christopher A. Shaw
doaj +1 more source
Progress in the study of dioecy in Mexican cycad species and its implications for conservation
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 +2 more
wiley +1 more source
A new classification and linear sequence of extant gymnosperms [PDF]
A new classification and linear sequence of the gymnosperms based on previous molecular and morphological phylogenetic and other studies is presented.
Chase, Mark W. +5 more
core +2 more sources
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
Fire Histories and Rainforest Aboriginal Archaeology in the Wet Tropics Bioregion, North Queensland
ABSTRACT Unlike the dominant Australian savanna‐sclerophyll vegetation, tropical rainforests do not burn easily. Any evidence of fire in Australian rainforests therefore invites explanations of its source. Analysis of 187 radiocarbon dates that include selected charcoal fragments from 23 soil pits and 7 archaeological sites from the Wet Tropics ...
Richard Cosgrove +9 more
wiley +1 more source

