Results 141 to 150 of about 86,726 (311)

Natural and anthropogenic forest fires recorded in the Holocene pollen record from a Jinchuan peat bog, northeastern China

, 2008
Pollen and charcoal particles from a Jinchuan peat (northeastern China) were examined to investigate the fire origin and interaction between climate, vegetation, fire and human activity during the Holocene.
Jiang, W, Liu, J, Wang, L, Ogle, N, Chu, G, Leroy, SAG   +5 more
core  

Associations of Outdoor Air Pollution With Incidence of Cancers Other Than Lung Cancer in a Large US Prospective Cohort

International Journal of Cancer, EarlyView.
Associations between outdoor air pollution and cancers other than lung cancer remain unclear, particularly in the context of tobacco use. Here, the authors assessed possible links between ambient air pollutant exposure and incidence of 20 non‐lung cancers among adults followed over a 25‐year period in the United States.
W. Ryan Diver, Lauren R. Teras, Emily L. Deubler, Alpa V. Patel, Michelle C. Turner   +4 more
wiley   +1 more source

The effects of nucleotype and genotype upon pollen grain development in Hyacinth and Scilla

, 1982
In pollen grains within anthers of a triploid Hyacinthus orientalis the average duration of the mitotic cycle and the average size of pollen grains are directly proportional to the nuclear DNA amount. The average length of chromosomes at metaphase of the
Rees, H., Karp, A., Jewell, A. W.
core   +1 more source

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

InfoMat, EarlyView.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source

Microsporogenesis and pollen formation in cassava

, 2011
This article describes the complete microsporogenesis and pollen formation in cassava (Manihot esculenta Crantz) at the various developmental stages (pollen mother cell, meiosis, tetrads, early free spore, mid uninucleate, late uninucleate, binucleate ...
C. SAUTTER, C. OLAYA, C. WANG, B. DEDICOVA, Z. LENTINI, E.TABARES, P. ZHANG, M. QUINTERO, H. CEBALLOS, E. Tabares   +9 more
core   +1 more source

Drought Risk in Mango and Avocado Orchards: Insights Into Plant Water Relations and Irrigation‐Related Agronomic Solutions

Irrigation and Drainage, EarlyView.
ABSTRACT Climate change is making water availability more uncertain, with growing consequences for the productivity and long‐term sustainability of tropical and subtropical fruit orchards. Mangifera indica L. and Persea americana Mill. both require large amounts of water to sustain growth and productivity.
Eleonora Cataldo
wiley   +1 more source

SlMYB72 affects pollen development by regulating autophagy in tomato. [PDF]

Hortic Res, 2023
Wu M, Zhang Q, Wu G, Zhang L, Xu X, Hu X, Gong Z, Chen Y, Li Z, Li H, Deng W.   +10 more
europepmc   +1 more source

Pollen Morphology of Crucianella L. (Rubiaceae) Based on Light and Scanning Electron Microscope Data and Implications for Taxonomy

Microscopy Research and Technique, EarlyView.
This study provides the palynological analysis of 12 Crucianella L. taxa using LM and SEM. Variations in pollen size, aperture number, and exine ornamentation were identified as key traits, demonstrating their taxonomic value for distinguishing closely related species and subspecies within the genus. ABSTRACT Crucianella L.
Sevcan Celenk, Zelal Kücük, Gülşah Bağcıvan, Ruziye Daşkın   +3 more
wiley   +1 more source

Disruption of the Contents of Endogenous Hormones Cause Pollen Development Obstruction and Abortion in Male-Sterile Hybrid Lily Populations. [PDF]

Plants (Basel), 2023
Jia W, Li X, Wang R, Duan Q, He J, Gao J, Wang J.   +6 more
europepmc   +1 more source

Studies in the holocene vegetation history of Wensleydale [PDF]

, 1985
Total and arboreal pollen diagrams have been prepared for three blanket bog sites and one valley bog in the Wensleydale area of the Yorkshire Dales. Local pollen assemblage zones have been defined for each site using numerical methods, and these have ...
Honeyman, Anne
core