Results 61 to 70 of about 127,000 (225)

Characterization of a novel R98Q mutation that confers resistance to sulfentrazone in common ragweed (Ambrosia artemisiifolia) populations from Michigan

Pest Management Science, EarlyView.
Field‐collected Ambrosia artemisiifolia populations from Michigan, USA, soybean fields exhibited strong resistance to the protoporphyrinogen IX oxidase (PPO)‐inhibiting herbicide sulfentrazone and reduced sensitivity to fomesafen. Target‐site analysis identified a novel Arg‐98‐Gln (R98Q) substitution in PPO2, co‐occurring with the previously reported ...
Sara Álvarez‐Rodríguez, Michael Ozolins, Aimone Porri, Jens Lerchl, Eric Patterson   +4 more
wiley   +1 more source

Usefulness and limitations of pollen characters in environmental studies based on Viola L. species (sect. Melanium Ging.) [PDF]

, 2014
The aim of these studies was to determine the effect of environmental pollution on pollen development. Pollen heteromorphism (the presence of pollen morphs differing in aperture number in one flower of a plant), pollen viability (stainability) and pollen
Pilarska M., Poznańska E., Słomka A., Kwiatkowska M., Struebig M., Bohdanowicz J., Kuta E., Shuka L.   +7 more
core   +2 more sources

Elevational shift in pollen quantity–quality trade-off and stress-tolerant morphology in Himalayan Thymus linearis

Discover Plants
High-altitude environments impose multiple abiotic stressors that shape plant reproductive and morphological responses; however, within-species tests of pollen quantity–quality relationships along elevation remain rare.
Sadaf Wani, Taliyah Manzoor, Latif Ahmad Peer   +2 more
doaj   +1 more source

Commercial Product Based on Metarhizium Anisopliae Affects Survival, Midgut Morphology, and Behavior in the Stingless Bee Scaptotrigona depilis (Hymenoptera: Apidae)

Environmental Toxicology, EarlyView.
ABSTRACT Brazilian social stingless bees are important pollinators and producers of honey, wax, royal jelly, propolis, and other products. These species are experiencing a population decline, attributed to different factors, such as the excessive use of pesticides.
Andressa Santoro, Daiani Rodrigues Moreira, Talita Aparecida Tódora Santana, Wingly Santos Beltrame, Nathalia Rodrigues da Silva de Carvalho, Breno Gabriel da Silva, Gustavo Henrique de Souza, Livia Bracht, Adriana Aparecida Sinópolis Gigliolli, Maria Claudia Colla Ruvolo Takasusuki   +9 more
wiley   +1 more source

Climate variability and human impact in South America during the last 2000 years: synthesis and perspectives from pollen records [PDF]

, 2016
An improved understanding of present-day climate variability and change relies on high-quality data sets from the past 2 millennia. Global efforts to model regional climate modes are in the process of being validated against, and integrated with, records
Rull, V., Gosling, William D., Hoyos, I., Flantua, Suzette, Carson, John F., Gosling, W., D, Ledru, Marie-Pierre, M. Vuille, González-Arango, C., Ledru, M., P, Ledru, M.P., Hooghiemstra, Henry, H. Hooghiemstra, H. Behling, Gosling, W.D.; id_orcid, Vuille, Mathias, Carson, J. F., Flantua, S.G.A., Maldonado, A., Carson, J.,, Behling, H., Tonello, M. S., Rull, Valentí, M. P. Ledru, Carson, J., F, J. F. Carson, Tonello, M., S, Ledru, M. P., Mayle, F., E. Montoya, A. Maldonado, Gosling, W. D., Carson, J.F., Tonello, M.S., Carson, J. F., Whitney, B., S, Hoyos, Isabel, Ledru, M.,, C. González-Arango, Gosling, William, Whitney, B. S., Montoya, Encarni, Flantua, S., G A, Mayle, Francis, González-Arango, Catalina, Whitney, Bronwen, Hooghiemstra, H., Tonello, M.,, I. Hoyos, S. G. A. Flantua, Montoya, E., M. S. Tonello, B. S. Whitney, Flantua, S. G. A., V. Rull, Maldonado, Antonio, Behling, Hermann, Vuille, M., Whitney, B.S., Flantua, Suzette G. A., F. Mayle, Whitney, B.,, Gosling, W.,, Gosling, W.D., W. D. Gosling, Flantua, S.,   +65 more
core   +5 more sources

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

Journal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton, Abdeljalil Bouzouggar, Stacy Carolin, Louise Humphrey   +3 more
wiley   +1 more source

Interchanges in popcorn (Zea mays L.) involving the nucleolus organizer chromosome

Crop Breeding and Applied Biotechnology, 2006
The analysis of microsporogenesis in endogamous plants of popcorn (S5 to S7) showed several and distinct interchanges which involve the nucleolus organizer (chromosome 6).
Jú˙lio César de Lima, Adriana Crippa, Lucas da Ressurreição Garrido, Umberto Almeida Camargo, Paulo Ricardo Dias de Oliveira   +4 more
doaj  

Ants contribute to raspberry pollination in protected cropping systems

Agricultural and Forest Entomology, EarlyView.
Ants visited raspberry flowers more frequently than European honey bees (Apis mellifera), Australian stingless bees (Tetragonula carbonaria) and flies, many transporting raspberry pollen on their bodies, indicating potential pollination capacity. Ants were active flower visitors at most times of the day and may extend the daily pollination window and ...
Pia Malm, Blake M. Dawson, Jelena Preradovic, Johan Ekroos, Romina Rader, Bar Shermeister, Lena A. Schmidt   +6 more
wiley   +1 more source

An investigation into the recent vegetation history of Great Wood, near Eggleston Co. Durham using fine resolution pollen analysis of Mor humus and relevant historical evidence. [PDF]

, 1993
This study investigated the recent vegetation history of an ancient woodland, Great Wood, near Eggleston Co. Durham which has been part of the lands of Eggleston Hall since at least 1614.
Payne, Joanne
core  

Colony‐level pollen collection reflects visitation of managed bumble bees (Bombus impatiens) in strawberry fields and surrounding landscapes without reducing pollen limitation

Agricultural and Forest Entomology, EarlyView.
We extracted pollen from colony beeswax to quantify season‐long, colony‐level resource use and tested how managed Bombus impatiens visitation and Rosaceae pollen collection relate to landscape context and strawberry pollination. Increased managed bumble bee visitation was not influenced by surrounding landcover, did not reduce pollen limitation and ...
Leeah I. Richardson, Olivia Miller, David Sossa, Aaron Iverson, Scott McArt, Katja Poveda, Heather Grab   +6 more
wiley   +1 more source