Results 51 to 60 of about 75,475 (242)

PRECIS, the Botanical Research Institute herbarium data bank

Bothalia: African Biodiversity & Conservation, 1983
PRECIS has been modified to make it more useful to taxonomists. The simplified system contains only specimen-related data, and the resulting decrease in the size of the data bank will make it more efficient to operate and maintain.
R. E. Magill, G. E. Gibbs Russell, J. W. Morris, P. Gonsalves   +3 more
doaj   +1 more source

Application of a novel schema for describing fossil fern foliage and investigating taxonomic and morphological change across the Cretaceous–Paleogene boundary in western North America

American Journal of Botany, EarlyView.
Abstract Premise The Chicxulub asteroid impact at the Cretaceous–Paleogene (K–Pg) boundary triggered a mass extinction 66 million years ago. Ferns thrived in the aftermath of the extinction, evidenced by the well‐documented “fern spore spike.” However, fern macrofossil records across the K–Pg boundary are less understood.
Fern B. Holian, Emily B. Sessa, Richard S. Barclay, Regan E. Dunn, Jacquelyn L. Gill, Kirk R. Johnson, S. Augusta Maccracken, Ian M. Miller, Jarmila Pittermann, Ellen D. Currano   +9 more
wiley   +1 more source

Hemiparasitic Castilleja presence is correlated with increased plant biodiversity across montane plant communities

American Journal of Botany, EarlyView.
Abstract Premise Root hemiparasites form haustoria in belowground roots of hosts to extract nutrients and water from the surrounding hosts. Through parasitic symbiosis, these plants disproportionately affect plant communities relative to their abundance by reducing host size, altering nutrient flow, and eventually increasing local biodiversity.
Jordan C. Argrett, Makena Lang, Anders Hastings, Y. Anny Chung, Nina Wurzburger, Charles F. Williams   +5 more
wiley   +1 more source

Prospects for the use of the phytoremediant Phragmites australis (Cav.) Trin. ex Steud. for obtaining green fertilizers [PDF]

BIO Web of Conferences
The article presents data on the accumulation of potassium, calcium, iron, phosphorus and sulfur in the tissues of the green vegetative mass of Phragmites australis (Cav.) Trin. ex Steud.
Tretyakov M.Yu., Tokhtar V.K., Tokhtar L.A., Zelenkova V.N., Nikulin I.S., Voropaev V.S.   +5 more
doaj   +1 more source

Sustainable Palm Oil Extraction and Trends in the Use of Green Technologies: State‐of‐the‐Art and Future Directions

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Palm oil, which is extracted from the mesocarp of the fruit of the Elaeis guineensis Jacq. palm tree, is the most widely produced vegetable oil in the world. The extraction of this substance typically utilizes the conventional pressing method, a technique that is advantageous due to its low operating cost and simplified process.
Constantino Lucas Queta, Alessandra Lopes de Oliveira, Aline Silva Mello Cesar   +2 more
wiley   +1 more source

Integrating multi-omics and epiphytic microbial communities to decipher the spatiotemporal dynamics of flower color dynamic regulation in Hibiscus mutabilis

Frontiers in Plant Science
The dynamic change of flower color is a key trait for plant environmental adaptation and pollinator attraction, yet its spatiotemporal regulatory mechanisms remain poorly understood.
Shengwen Tang, Xi Chen, Jiao Ma, Pei Tu, Xiaoqing Shi, Guo Chen   +5 more
doaj   +1 more source

An ecological bibliography for southern Africa

Bothalia: African Biodiversity & Conservation, 1983
An ecological bibliography for southern Africa up until 1975 is currently being compiled. References recorded by researchers at the Botanical Research Institute, Pretoria are being expanded and incorporated into a computer data base.
A. J. Engelbrecht, D. Edwards, D. J. B. Killick   +2 more
doaj   +1 more source

Spectroscopic and In Silico Determination of the Structural and Antioxidant Properties of Essential Oils From Lavandula Species Cultivated in the Silivri Region of Istanbul

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Plants are important sources of bioactive compounds that contribute to nutrition, health maintenance, and disease prevention. In this study, the chemical composition and antioxidant potential of essential oils obtained from Lavandula angustifolia “Sevtopolis” and Lavandula × intermedia cultivated in the Silivri region of Istanbul were ...
Bilge Bicak, Beray Kizilkaya, Serda Kecel Gunduz, Aliye Demet Demirag, Sabriye Percin Ozkorucuklu   +4 more
wiley   +1 more source

Intensity of plant collecting in southern Africa

Bothalia: African Biodiversity & Conservation, 1984
The intensity of plant collecting in southern Africa is mapped using records from the Pretoria National Herbarium Computerized Information System (PRECIS), For the entire area, over 85% of the quarter degree grid squares have fewer than 100 specimens ...
G. E. Gibbs Russell, E. Retief, L. Smook
doaj   +1 more source

Seasonal Fluctuations of Plastochromanol‐8 and α‐Tocopherol Amounts in the Leaves of Cecropia Trees

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Plastochromanol‐8 (PC‐8) is a homologue of γ‐tocotrienol with a longer side chain (eight instead of three isoprene units) and therefore also a representative of the tocochromanol (vitamin E) group. PC‐8 has been determined in various plants and seeds, with Cecropia sp. leaves showing unusually high levels.
Rosalie Ormos, Jörg Rau, Walter Vetter
wiley   +1 more source