The Anatomical Characters presented by the Peduncle of Cycadaceae
Annals of Botany, 1897 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
D H Scott
exaly +3 more sources
Geographic factors and climatic fluctuation drive the genetic structure and demographic history of Cycas taiwaniana (Cycadaceae), an endemic endangered species to Hainan Island in China [PDF]
Ecology and Evolution, 2022 Hainan Island had experienced several cold–warm and dry–humid fluctuations since the Late Pleistocene period, resulting in separating and connecting from the mainland several times with the cyclic rise and fall of sea level.
Li‐Xin Wu +4 more
doaj +2 more sources
Genetic characterization of the entire range of Cycas panzhihuaensis (Cycadaceae)
Plant Diversity, 2020 Cycas panzhihuaensis L. Zhou & S. Y. Yang (Cycadaceae) is an endangered gymnosperm species endemic to the dry-hot valley of the Jinsha River basin in southwest China. Although the wild C.
Siyue Xiao +3 more
doaj +3 more sources
Not that young: combining plastid phylogenomic, plate tectonic and fossil evidence indicates a Palaeogene diversification of Cycadaceae [PDF]
Annals of Botany, 2022 Thomas Marler
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ISSR Variation in the Endemic and Endangered Plant Cycas guizhouensis (Cycadaceae) [PDF]
Annals of Botany, 2004 Cycas guizhouensis (Cycadaceae) is a rare and endangered species endemic to the southwest of China. An investigation was undertaken into the genetic variation of wild populations.ISSR markers were used to determine the genetic variation within and between 12 extant populations of this species.Low genetic diversity (at population level, P = 14.21 %, H(E)
Xue-Jun Ge, , Hao Gang
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Spermatophyta Molecular Clock: Time Drift and Recent Acceleration. [PDF]
Plant Environ InteractExponential increase in the base substitution rate in recent geologic time. ABSTRACT Angiospermae radiation is widely recognized as a mid‐Cretaceous event, but the adaptive radiation of Asarum and Viola as spring ephemerals also occurred during the Quaternary. To better understand the evolution of Angiospermae through geological time, a robust and well‐
Osozawa S.
europepmc +2 more sources
Conserving Large Old Trees in Guangxi, South China: Diversity, Distribution, and Preservation Strategies. [PDF]
Ecol EvolThis study comprehensively analyzes the diversity and distribution of over 500 year old large old trees (LOTs) in Guangxi, China, identifying 2630 LOTs from 149 species with a notable latitudinal gradient in richness. Tree vitality was found to be highest in rural and natural habitats like villages and scenic spots, compared to residential areas.
Yan J +6 more
europepmc +2 more sources
Ecological Isolation Maintains the Species Boundaries Between Two Sympatric <i>Cycas</i> From Southwest China. [PDF]
Ecol EvolThe study reveals that sympatric Cycas species (C. pectinata and C. simplicipinna) maintain strict species boundaries without hybridization, driven by reproductive isolation mechanisms (divergent coning times and pollinator specificity) and ecological niche differentiation (habitat preferences, soil pH differences).
Zheng F +6 more
europepmc +2 more sources
Anthropogenic Disturbances and Invasion of <i>Mikania micrantha</i> Threaten <i>Rauvolfia serpentina</i> Populations in Nepal. [PDF]
Ecol EvolThis research article investigate the current population dynamics of a threatened medicinal plant Rauvolfia serpentina.in differentially disturbed region of tropical forest in eastern Nepal. The findings revealed the cumulative impacts of over exploitation and invasion of Mikania micrantha have negatively impacted the population dynamics of R ...
Neupane A, Jnawali B, Ghimire SK.
europepmc +2 more sources