Results 41 to 50 of about 12,100 (224)

Agrestal Environments and Maternal Genetic Effects Weaken the Ecological Barriers for Crop to Wild Introgression in Sunflower

open access: yesEcology and Evolution, Volume 16, Issue 2, February 2026.
We highlight how agrestal environments and maternal effects may facilitate the adaptation of crop‐wild hybrid sunflower to agroecosystems. We present two consecutive years of data on diverse wild and reciprocal crop‐wild hybrid sunflower populations planted in three contrasting, ruderal or agrestal, environments. We found that (i) agrestal environments
Ignacio J. Fanna   +3 more
wiley   +1 more source

ACUTE AND SUBACUTE TOXICITY OF CHLOROFORM EXTRACT OF XANTHIUM STRUMARIUM LEAVES

open access: yesThe Iraqi Journal of Medical Sciences, 2019
Background:The incidence of cancer is increasing worldwide. Xanthium strumarium may possess anticancer activity, the plant extract for in vitro anticancer activity against a panel of three human cell lines (Breast MCF7, Renal TK10 and Melanoma ...
Atheer Alsabah   +2 more
doaj   +1 more source

Effects of Xanthium Leaf Extracts on Lettuce Seed Germination [PDF]

open access: yes, 1974
Author Institution: Department of Botany, The Ohio State UniversitySeed germination in lettuce var. Grand Rapids, and floral induction in Xanthium are phytochrome-mediated processes.
Fratianne, Douglas G.
core  

Of walls and floors: how physical structures affect mating song detection in stridulating orthopterans

open access: yesEcological Entomology, Volume 51, Issue 1, Page 141-152, February 2026.
Schematic representation of the experimental settings for one field type. Each setting was assigned one of the three treatments (i.e., walls, floors, or control). Each treatment contained an AudioMoth™ (circle), either positioned close to the ground (5 cm) or elevated (60 cm), acting as a receiver organism. Abstract Sensory ecology theory proposes that
Laurie Provençal, Raphaël Proulx
wiley   +1 more source

Ecological Effects of Solanum rostratum Invasion on the Diversity and Functional Traits of Native Plant Communities

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
The invasion of Solanum rostratum exerts stage‐dependent effects on native plant communities. The study found that at low invasion levels, it temporarily enhances native plant diversity and community stability through resource complementarity; whereas at high invasion levels, it shifts to strong competitive inhibition, leading to a sharp decline in ...
Lijun Hu   +3 more
wiley   +1 more source

Chlorophyll Levels and Leaf Chlorplast Ultrastructure as Ecotypic Characters in Xanthium Strumarium L. [PDF]

open access: yes, 1973
The major objective of the work was to clarify some of the adaptive mechanisms that a common widespread species would show as a possible requirement for survival in its natural habitats.
Abdulrahman, Farag
core   +1 more source

Assessing Temporal Drought Severity in Kenya's Arid and Semi‐Arid Landscape Using Google Earth Engine and the Normalised Difference Drought Index

open access: yesMeteorological Applications, Volume 33, Issue 1, January/February 2026.
Utilisation of Google Earth Engine to analyse Normalised Difference Drought Index trends in Narok (Kenya) across six timeframes. Trends revealed increased severe and moderate drought conditions and decreased drought conditions. Temporal increase has been on the rise from 2015, with extreme events most witnessed in 2020.
Brian Marvis Waswala‐Olewe   +4 more
wiley   +1 more source

Hydrochorous Dispersal of Diaspores in a Reconnected Floodplain: Distribution Patterns and Potential for the Development of Floodplain Habitats

open access: yesApplied Vegetation Science, Volume 29, Issue 1, January/March 2026.
Dike relocation reconnected a section of the Elbe River to its floodplain, thereby restoring a more natural flooding regime, and hydrochorous dispersal of diaspores. Low areas received the most abundant and diverse diaspore deposition, which was dominated by herbaceous species characteristic of open floodplain habitats.
Sebastian Schäfer   +2 more
wiley   +1 more source

Why is biocontrol of common ragweed (Ambrosia artemisiifolia), the most allergenic weed in Eastern Europe, still only a hope? [PDF]

open access: yes, 2007
This chapter presents the story of a long and as yet unsuccessful struggle to find suitable fungal and/or insect biocontrol agents for ragweed, a plant that became a widespread allergenic weed in Eastern Europe.
Kiss, Levente
core  

Photoperiod–Temperature Interactions in a Changing Climate: A Review of Plant Phenological Responses

open access: yesJournal of Biogeography, Volume 53, Issue 1, January 2026.
ABSTRACT Aim Climate change is reshaping plant phenology and species distributions, especially in temperate and boreal ecosystems, where advances in spring events have already extended the growing season. While temperature has been the primary focus of many studies, the role of photoperiod—a stable, latitude‐dependent cue—remains underexplored.
Martina Tarascio   +5 more
wiley   +1 more source

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