Results 21 to 30 of about 3,566,202 (337)

Variability of Seed Germination and Dormancy Characteristics and Genetic Analysis of Latvian Avena fatua Populations

open access: yesPlants, 2021
Avena fatua is an economically detrimental weed found in cereal growing areas worldwide. Knowledge about the variation of dormancy and germination characteristics, as well as of the genetic diversity and structure can provide additional information about
Jevgenija Ņečajeva   +4 more
doaj   +1 more source

Repeated Stand-Replacing Crown Fires Affect Seed Morphology and Germination in Aleppo pine. [PDF]

open access: yesFront Plant Sci, 2017
Post-fire reproductive niche of Aleppo pine (Pinus halepensis) is deeply interlaced with fire products. Indeed, the high pH and low osmotic potentials of ash beds under burnt crowns constitute the main constraints to seed germination.
Saracino A   +8 more
europepmc   +2 more sources

Seed Morphology and Classification of Impatiens (Balsaminaceae) [PDF]

open access: yesBlumea - Biodiversity, Evolution and Biogeography of Plants, 2005
Seed coat morphology was observed through SEM for 65 species and 10 sections of Impatiens. Several types of seed coat are recognized in this study. On the basis of comparison with other characters such as chromosome numbers, floral characters and seedling morphology, systematic problems concerning Impatiens are briefly discussed.
Utami, N., Shimizu, T.
openaire   +2 more sources

Seed Mass and Morphology in Outcrossing and Selfing Species of Clarkia (Onagraceae): An SEM Study [PDF]

open access: yes, 2004
Seeds from three pairs of outcrossing-selfing sister taxa from the genus Clarkia (farewell-to-spring, Onagraceae)—Clarkia unguiculata, Clarkia exilis, Clarkia xantiana ssp. xantiana and ssp. parviflora, and Clarkia concinna ssp.
Cavaliere, A. R.   +2 more
core   +3 more sources

Seed-produced anti-globulin VHH-Fc antibodies retrieve globulin precursors in the insoluble fraction and modulate the Arabidopsis thaliana seed subcellular morphology [PDF]

open access: yes, 2020
Key message Nanobody-heavy chain (VHH-Fc) antibody formats have the potential to immunomodulate even highly accumulating proteins and provide a valuable tool to experimentally modulate the subcellular distribution of seed storage proteins.
Altmann, Friedrich   +7 more
core   +2 more sources

The relationship between shape and size of diaspores depends on being seeds or fruits [PDF]

open access: yes, 2019
The relationship between the size and shape of diaspores was investigated in angiosperms and gymnosperms including determining if being a seed or fruit was a factor. Size was expressed as volume and shape as the departure from a perfect idealized sphere.
Dias, A.S., Dias, L.S.
core   +1 more source

Adaptive Morphological Reconstruction for Seeded Image Segmentation [PDF]

open access: yesIEEE Transactions on Image Processing, 2019
Morphological reconstruction (MR) is often employed by seeded image segmentation algorithms such as watershed transform and power watershed as it is able to filter seeds (regional minima) to reduce over-segmentation. However, MR might mistakenly filter meaningful seeds that are required for generating accurate segmentation and it is also sensitive to ...
Tao Lei   +5 more
openaire   +4 more sources

Urbanization alters plastic responses in the common dandelion Taraxacum officinale

open access: yesEcology and Evolution, 2020
Urban environments expose species to contrasting selection pressures relative to rural areas due to altered microclimatic conditions, habitat fragmentation, and changes in species interactions.
Matti Pisman   +2 more
doaj   +1 more source

SEM observations of pollen grains, fruits and seeds of the Pieniny Mountains (South Poland) endemic species Erysimum pieninicum (Zapał.) Pawł. (Brassicaceae)

open access: yesActa Societatis Botanicorum Poloniae, 2011
Erysimum pieninicum (Zapał.) Pawł. (Brassicaceae) is an endemic species, growing only in Pieniny Mts. The aim of the presented work was to investigate its pollen morphology as well as its ultrastructural traits of pericarp and seed-coat. Pollen grains of
Irmina Maciejewska   +2 more
doaj   +1 more source

Seed morphology of the Polish native species of the genus Ribes L. Part 1. General characteristic

open access: yesActa Societatis Botanicorum Poloniae, 2014
The article contains general morphological and anatomical characteristics and analysis of the chemical composition of seeds of Polish Ribes species: R. uva-crispa L., R. nigrum L., R. alpinum L., R. petraeum Wulfen, R. rubrum L. and R.
Dorota Wrońska-Pilarek
doaj   +1 more source

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