Results 21 to 30 of about 69 (62)

Anatomia foliar e caulinar de Chamaecrista trichopoda (Caesalpinioideae) e histoquímica do nectário extrafloral Foliar and stem anatomy of Chamaecrista trichopoda (Caesalpinioideae) and extrafloral nectary histochemistry

Planta Daninha, 2006
Nectários são comuns dentre as Leguminosae, estando freqüentemente localizados nas folhas. Objetivou-se caracterizar anatomicamente o caule, a folha e o nectário extrafloral de Chamaecrista trichopoda, bem como investigar a natureza química do secretado ...
D.M.T. Francino, B.F. Sant'Anna-Santos, K.L.F. Silva, M. Thadeo, R.M.S.A. Meira, A.A. Azevedo   +5 more
doaj   +1 more source

Field measurements and model predictions of turbulent kinetic energy in canopies of sparse vegetation under tidal flows

Limnology and Oceanography Letters, Volume 11, Issue 2, March 2026.
Abstract The presence of vegetation in aquatic environments alters hydrodynamics and sediment resuspension. A recent paradigm has suggested that turbulent kinetic energy (TKE) serves as a better predictor of sediment transport in aquatic canopies than bed shear stress.
Vinay Nelli, Julia C. Mullarney, Rémi Chassagne, William Nardin, Rafael O. Tinoco   +4 more
wiley   +1 more source

Composição química e conteúdo de ferro solúvel em soja [Glycine max (L.) Merrill] Chemical composition and soluble iron content in soybean [Glycine max (L.) Merrill]

Ciência e Agrotecnologia, 2003
A soja é um grão que possui um dos maiores teores de proteína e ferro entre os alimentos de origem vegetal e teve a sua utilização muito aumentada nos últimos anos, principalmente por lactentes que têm problemas de intolerância ao leite de vaca em todo ...
Letícia Tamie Paiva Yamada, Maria de Fátima Píccolo Barcelos, Raimundo Vicente de Sousa, Andrelisa Lina de Lima   +3 more
doaj   +1 more source

Longitudinal Mean Velocity and Turbulent Kinetic Energy Within an Emergent Canopy in Nonuniform Flows

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Vegetation‐induced drag generates nonuniform water surface profiles through flow disruption, creating complex hydrodynamic conditions characterized by enhanced turbulence and energy dissipation. This study investigates the longitudinal velocity and turbulent kinetic energy (TKE) dynamics in emergent canopies under streamwise varying flow ...
Yonggang Zhang, Ping Wang, Ke Xiang, Zheng Gong, Zi Wu   +4 more
wiley   +1 more source

Cold hardiness mechanisms and modeling: existing approaches and future avenues

New Phytologist, Volume 249, Issue 6, Page 2668-2682, March 2026.
Summary Cold hardiness models are useful tools to predict cold damage in plants, such as those produced by unseasonal temperature cycles or by increased cold exposure. Although development of these models started about five decades ago, their applications remain limited.
Guillaume Charrier, Al P. Kovaleski, Bénédicte Wenden, Heikki Hänninen   +3 more
wiley   +1 more source

Contrasting effects of experimental warming in the initiation year and the flowering year on flower phenology of boreal understory species

American Journal of Botany, Volume 113, Issue 2, February 2026.
Abstract Premise High‐latitude plants initiate flower primordia at least 1 year before flowering. While impacts of rising temperatures on phenology in the flowering year are well studied, the effects of warmer temperatures in the initiation year (IY; the year before flowering) are virtually unknown.
Christa P. H. Mulder, Eileen P. Schaub, Pamela K. Diggle   +2 more
wiley   +1 more source

Analytical Model of Velocity Distribution and Penetration Characteristics in Water‐Level Fluctuation Zone With Vegetation

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract As a critical ecological transition zone between aquatic and terrestrial ecosystems, the water‐level fluctuation zone significantly influences flow structure through vegetation morphology. Conventional analytical velocity models inadequately address the variation in vegetation with water depth.
An‐Qi Li, Xiao‐Bo Liu, Wei‐Jie Wang, Zhuo‐Wei Wang, Feng‐Jiao Li, Ming‐Yang Xu, Wei Huang   +6 more
wiley   +1 more source

Scale Effects of Patch Configuration and Density on Vegetation Drag in Floodplain Flows

Ecohydrology, Volume 19, Issue 1, January‐February 2026.
ABSTRACT Vegetated floodplains modulate river hydraulics through drag forces that affect flow conveyance, sediment transport and floodplain ecosystems. Non‐uniform vegetation patches are widespread in natural floodplains and challenge drag prediction models, as the scale‐dependent effects of patch configuration, canopy density and submergence remain ...
Seyed Mahdi Jafari Mohammadi, Juha Järvelä, Kaisa Västilä   +2 more
wiley   +1 more source

Submerged Flexible Canopies Produce Weaker Shear‐Layer Turbulence and Mitigate Sediment Transport, Compared to Rigid Model Canopies

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract Submerged vegetation canopies are widespread and influence bedload sediment transport in rivers, wetlands and deltas. However, the impacts of submerged canopies on sediment transport have not been fully quantified. This study used model Vallisneria denseserrulata to construct submerged flexible canopies in a mobile bed.
Chao Liu, Yuqi Shan, Fujian Li, Xingnian Liu, Heidi Nepf   +4 more
wiley   +1 more source

Genetic Analysis of Apple Autumn Canopy Senescence in a Nordic Climate

Physiologia Plantarum, Volume 177, Issue 6, November/December 2025.
ABSTRACT Autumn phenology traits are likely to be essential for the adaptation of apple to boreal climate. However, the genetic control of these traits is not well understood, and, for example, growth cessation does not appear to be controlled by day length as in many other boreal tree species.
Jonas Skytte af Sätra
wiley   +1 more source