Results 1 to 10 of about 2,053 (182)

Lectotypification of Cycas debaoensis (Cycadaceae) [PDF]

open access: yesPhytoKeys, 2022
The type of Cycas debaoensis Y.C.Zhong & C.J.Chen (Y.C.Zhong 8762) consists of nine duplicates in PE. Our new investigation of the type collection suggests that the type includes at least two different gatherings which should be considered as ...
Yong Yang, David K. Ferguson
doaj   +6 more sources

Characterization of the complete chloroplast genome of Cycas hongheensis (Cycadaceae), an endemic species in the red river region of China [PDF]

open access: yesMitochondrial 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
doaj   +2 more sources

CYCADACEAE

open access: yesBothalia: African Biodiversity & Conservation, 1964
No abstract ...
R. A. Dyer
doaj   +2 more sources

Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae) [PDF]

open access: yesMicroorganisms, 2023
As a gymnosperm group, cycads are known for their ancient origin and specialized coralloid root, which can be used as an ideal system to explore the interaction between host and associated microorganisms. Previous studies have revealed that some nitrogen-
Jiating Liu   +4 more
doaj   +2 more sources

Towards the plastome evolution and phylogeny of Cycas L. (Cycadaceae): molecular-morphology discordance and gene tree space analysis [PDF]

open access: yesBMC Plant Biology, 2022
Background Plastid genomes (plastomes) present great potential in resolving multiscale phylogenetic relationship but few studies have focused on the influence of genetic characteristics of plastid genes, such as genetic variation and phylogenetic ...
Jian Liu, Anders J. Lindstrom, Xun Gong
doaj   +2 more sources

The Systematics and Evolution of Gymnosperms with an Emphasis on a Few Problematic Taxa [PDF]

open access: yesPlants
Gymnosperms originated in the Middle Devonian and have experienced a long evolutionary history with pulses of speciation and extinction, which resulted in the four morphologically distinct extant groups, i.e., cycads, Ginkgo, conifers and gnetophytes ...
Yong Yang, Zhi Yang, David Kay Ferguson
doaj   +2 more sources

Paleovegetation Community and Paleoclimate Succession in Middle Jurassic Coal Seams in Eastern Coalfields in Dzungaria Basin, China [PDF]

open access: yesPlants
The Dzungaria Basin is located north of Xinjiang and is one of the largest inland basins in China. The eastern coalfields in the Dzungaria Basin contain a large amount of coal resources, and the thickness of the coal seams is significant.
Xingli Wang   +6 more
doaj   +2 more sources

Conservation and threatened status of plant species with extremely small populations in the karst region of southeastern Yunnan, China [PDF]

open access: yesFrontiers in Plant Science
The southeastern Yunnan is one of the most typical areas in China with karst landforms. The rich variety of vegetation types and plant diversity means that threatened status are also synchronized.
Yang Liu   +13 more
doaj   +2 more sources

FAMILY CHARACTERS OF CYCADACEAE IN SOUTHERN AFRICA

open access: yesBothalia: African Biodiversity & Conservation, 1965
no abstract ...
R. A. Dyer
doaj   +2 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]

open access: yesEcology 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

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