Results 31 to 40 of about 84,030 (303)

Molecular footprints of the Holocene retreat of dwarf birch in Britain [PDF]

, 2014
© 2014 The Authors. Molecular Ecology Published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original ...
Atkinson MD, Avise JC, Brown IR, Brown IR, Furrer R, Hammer Ø, Huntley B, Linnaeus C, Mellersh C, Phillips SJ, Pritchard JK, R Core Team, Rich TCG, Stace CA, Stebbins GL   +14 more
core   +1 more source

Boron deficiency responses in maize (Zea mays L.) roots

Journal of Plant Nutrition and Soil Science, EarlyView., 2023
Abstract Background Boron (B) is an essential micronutrient for plants. Dicot plants respond to insufficient B supply by altering root architecture and root hair growth. How root systems of rather low‐B demanding monocot species such as maize (Zea mays L.) respond to B deficiency in terra has not been experimentally resolved, yet.
Manuela Désirée Bienert, Astrid Junker, Michael Melzer, Thomas Altmann, Nicolaus von Wirén, Gerd Patrick Bienert   +5 more
wiley   +1 more source

Pollen Morphology and Ultrastructure [PDF]

, 2018
AbstractThe study of pollen should encompass all structural and ornamental aspects of the grain. Pollen morphology is studied using LM and SEM and is important to visualize the general features of a pollen grain, including, e.g., symmetry, shape, size, aperture number and location, as well as ornamentation.
Halbritter, Heidemarie, Ulrich, Silvia, Grímsson, Friðgeir, Weber, Martina, Zetter, Reinhard, Hesse, Michael, Buchner, Ralf, Svojtka, Matthias, Frosch-Radivo, Andrea   +8 more
openaire   +2 more sources

Morphology and viability of pollen grains from passion fruit species (Passiflora spp.)

Acta Botânica Brasílica, 2013
The characterization and viability of pollen grains are useful tools to guide crosses in breeding programs. The objective of this study was to describe the morphological patterns and viability of pollen grains from five accessions of Passiflora edulis f.
Taliane Leila Soares, Onildo Nunes de Jesus, Everton Hilo de Souza, Janay Almeida dos Santos-Serejo, Eder Jorge de Oliveira   +4 more
doaj   +1 more source

Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica [PDF]

, 2010
The seed cone Telemachus is known from several Triassic localities in Gondwana. New specimens from two localities in Antarctica provide additional information about the type species, Telemachus elongatus, based on details of morphology and anatomy ...
Decombeix, Anne-Laure, Escapa, Ignacio Hernán, Taylor, Edith L., Taylor, Thomas N.   +3 more
core   +3 more sources

Influence factors on airborne pollen dispersal in a tropical island over China: morphology and meteorology

Atmospheric Environment: X
Airborne pollen is an important primary biological aerosol particle in tropical regions, greatly impacting climate and human health. However, the pollen morphology in tropical areas, particularly their impact on pollen dispersal, remains unknown.
Mengyuan Pang, Ningyan Fu, Siyang Li
doaj   +1 more source

Comparative performance of airyscan and structured illumination superresolution microscopy in the study of the surface texture and 3D shape of pollen

, 2018
The visualization of taxonomically diagnostic features of individual pollen grains can be a challenge for many ecologically and phylogenetically important pollen types.
Allen, Andersen, Anderson, Chaturvedi, Dan, Faegri, Gustafsson, Gustafsson, Habuchi, Han, Heintzmann, Hesse, Holt, Huang, Jost, Kasuboski, Leung, Long, Lukosz, Mander, Mander, Mander, Muller, Nelson, Page, Peltre, Punt, Punyasena, Reimer, Sheppard, Sivaguru, Sivaguru, Sun, Tcheng, Traverse, Urban, Urban, Urban, Weiss   +38 more
core   +1 more source

Ultrastructure Morphology of Melastoma L. (Melastomataceae) Pollen.

Jurnal Biologi Universitas Andalas, 2020
Melastoma L. is the type genus of Melastomataceae. While Melastoma malabathricum is the type species with the mostwide spread distribution compared to other species in this genus.
Lilis Suryani, Fitria Ramona
doaj   +1 more source

Gymnostoma tasmanianum sp nov., a fossil Casuarinaceae from the Early Oligocene of Little Rapid River, Tasmania, Australia [PDF]

, 2003
Int. J Plant Sci. 164(4):629–634. 2003. © 2003 by The University of ChicagoMacrofossils of Casuarinaceae from Early Oligocene sediments at Little Rapid River, Tasmania, are assigned to a new species, Gymnostoma tasmanianum.
Guerin, G., Hill, R.
core   +2 more sources

Pollen morphology of Curroria, Mondia, Socotranthus and Stomatostemma (Periplocaceae)

Bothalia: African Biodiversity & Conservation, 1993
The pollen morphology of I Planch., O Skeels, Socotranthus Kuntze and Stomatostemma N.E. Br. was studied.All the genera are characterized by pollen grains arranged in tetrads. The arrangement of the grains may be rhomboidal, tetrahedral or decussate. The
R. L. Verhoeven, H. J. T. Venter
doaj   +1 more source