Results 51 to 60 of about 2,101 (202)

PHOTOPERIODIC ADAPTATION TO LATITUDE IN XANTHIUM STRUMARIUM [PDF]

American Journal of Botany, 1966
Photoperiodic responses of collections of Xanthium strumarium L., grown from seed obtained in nature at various localities in North America between latitudes 20° and 45.5° N, were examined. The critical night length was found to vary noticeably with latitude of origin, from about 7.5 hr in ...
Ray, Peter M., Alexander, William E.
openaire   +2 more sources

Exploring Floristic Diversity and Medicinal Plant Uses in Venda, Limpopo, South Africa

Feddes Repertorium, Volume 137, Issue 2, June 2026.
ABSTRACT Plants have been an important source of medicine for thousands of years. To better understand the current diversity and usage of medicinal plants, floristic studies are essential. This report documents an expedition conducted in the Venda region of Limpopo, South Africa. The study was carried out in Shanzha and surrounding villages, as well as
Gurusamy Manikandan, Iliassou L. Mouafon, David R. Katerere   +2 more
wiley   +1 more source

The Distribution and Quality of Elephant Food Plants in Mwea National Reserve‐Kenya

African Journal of Ecology, Volume 64, Issue 4, June 2026.
ABSTRACT Understanding how herbivores respond to spatial and temporal resource variability is a central aspect of resource use ecology. This 18‐month study examined how seasonal changes in food plants availability, distribution and nutritional quality influence the foraging behaviour of African savanna elephants (Loxodonta africana) in Mwea National ...
Josephat K. Wambua, Yussuf A. Wato, Catherine Lukhoba, Nathaniel N. Gichuki   +3 more
wiley   +1 more source

Update of the Xylella spp. host plant database – Systematic literature search up to 31 December 2025

EFSA Journal, Volume 24, Issue 6, June 2026.
Abstract This scientific report provides an update of the Xylella spp. host plant database, aiming to provide information and scientific support to risk assessors, risk managers and researchers dealing with Xylella spp. Upon a mandate of the European Commission, EFSA created and regularly updates a database of host plant species of Xylella spp.
European Food Safety Authority (EFSA), Vincenzo Cavalieri, Elisa Fasanelli, Giandomenico Furnari, Davide Gibin, Alicia Gutierrez Linares, Alžběta Mikulová, Pierfederico La Notte, Luca Pasinato, Giuseppe Stancanelli   +9 more
wiley   +1 more source

Cytotoxic Compounds from Aerial Organs of

Natural Product Communications, 2016
Xanthium strumarium L., the main species of the genus Xanthium , is ubiquitously distributed. The aim of this study was to determine the cytotoxic effect of aerial organs of X.
Janet Piloto Ferrer, Iris Catiana Zampini, Ana Soledad Cuello, Marbelis Francisco, Aylema Romero, Dayana Valdivia, María Gonzalez, Carlos Salas, Angel Sanchez Lamar, María Inés Isla   +9 more
doaj   +1 more source

Paired plot experiments to assess impact of invasive species on native floral diversity in Pakistan

Frontiers in Environmental Science, 2023
The threat of invasion is growing globally and endangers biodiversity. Exotic invasive plants are putting a harm to the vegetation of Pakistan’s Pothwar region, which is a biodiversity hotspot. In the current study, the effects of Broussonetia papyrifera,
Huma Qureshi, Tauseef Anwar, Muhammad Mohibullah, Sammer Fatima, Rafia Younas, Ume Habiba, Laraib Malik, Asma Hanif, Muhammad Iqbal   +8 more
doaj   +1 more source

Projected Range Shifts of Emerging Agricultural Weeds Under Climate Change in Central Europe

Weed Research, Volume 66, Issue 3, May/June 2026.
ABSTRACT Assessing which weed species are likely to expand under climate change is essential for proactive management. While climate‐driven range expansions of many weed species have been documented globally, projections for their future spread in Central Europe remain limited and poorly understood.
Georg Hörmann, Gilles Colling, Swen Follak, Zdenka Lososová, Jana Bürger, Serge Buholzer, Filip Küzmič, Nina Richner, Urban Šilc, Franz Essl, Michael Glaser   +10 more
wiley   +1 more source

Effect of Simulated Tillage in Combination with Post-Shattering Temperature Conditions on Senna obtusifolia and Xanthium strumarium Seed Survival, Seedling Emergence and Seedbank Potential

Agriculture, 2018
Two of the most troublesome weeds in soybean, cotton, and corn in cropping systems of mid-south United States (US) are Senna obtusifolia and Xanthium strumarium.
Taghi Bararpour, Nicholas E. Korres
doaj   +1 more source

Modeling Neglected and Underutilized Crops for Future Food Resilience: A Regional MaxEnt Workflow

Plant-Environment Interactions, Volume 7, Issue 2, April 2026.
ABSTRACT Increasing agrobiodiversity is a widely supported idea and prevalent topic in academic discussion recently as a means to combat the effects of climate change. However, there is a lack of connection between academic discussion and application.
Daniel J. Winstead, Michael G. Jacobson
wiley   +1 more source

Cytological Studies on Two Species, Xanthium strumarium Linn. and Bidens pilosa Linn. Var. minor (Blume) Sherff (Asteraceae-Heliantheae) from Nepal

, 2017
Karyotype, meiosis and pollen stainability of the taxa Bidens pilosa L. var. minor (Blume) Sherff and Xanthium strumarium L. collected from central part of Nepal was cytologically carried out.
Pushpa Karna
core   +1 more source