Results 41 to 50 of about 3,183 (121)
Características Morfológicas e Bioquímicas do pólen coletado por cinco espécies de Meliponíneos da Amazônia Central [PDF]
Acta Amazonica, 2002 Durante um ano, o pólen transportado por Melipona compressipes manaosensis, Melipona seminigra merrillae, Melipona seminigra seminigra, Frieseomelitta sp. e Scaptotrigona sp. foi coletado diretamente das corbículas das operárias.
Antonio Carlos MARQUES-SOUZA +4 more
doaj +1 more source
The incredible vulnerability that reproduction poses for plant species in a warming world
New Phytologist, Volume 251, Issue 6, Page 3111-3118, September 2026.Generalized plant responses to heat stress across whole‐plant and reproductive scales. Summary Temperatures are rising globally and threatening the persistence of natural plant populations. Elevated temperatures disrupt gametogenesis, fertilization, and seed filling, often at lower thresholds than those affecting photosynthesis, growth, or survival ...
Derek A. Denney +4 more
wiley +1 more source
Ciência Rural, 2006 Os objetivos deste trabalho foram realizar um monitoramento aerobiológico, identificando e quantificando os tipos de grãos de pólen da atmosfera da cidade de Caxias do Sul, RS. Este estudo teve início em janeiro de 2001 e término em dezembro de 2002.
Sandra Maria Vergamini +4 more
doaj +1 more source
Espectro polínico da própolis de Scaptotrigona aff. postica (Hymenoptera, Apidae, Meliponini) em Barra do Corda, MA, Brasil [PDF]
Acta Amazonica, 2015 A própolis é uma substância resinosa coletada por abelhas de diferentes partes de uma planta, portanto, sua qualidade é relacionada à sua origem botânica. O objetivo deste trabalho foi verificar se os tipos polínicos encontrados indicam a origem botânica
Helder Rocha de SOUZA +3 more
doaj +2 more sources
The richness, frequency and relatedness components of mate diversity and mate portfolios
New Phytologist, Volume 251, Issue 6, Page 3703-3713, September 2026.The effects of (a) equal and (b, c) unequal contributions to mate portfolios by 10 mates on (d) Hill‐number mate diversity profiles (see Eqn 1). Summary Sexual reproduction produces genetically diverse families, especially when individuals mate with multiple partners.
Lawrence D. Harder, Mason W. Kulbaba
wiley +1 more source
Desiccation tolerance mechanisms in the green lineage and beyond
New Phytologist, Volume 251, Issue 6, Page 3159-3175, September 2026.Ancient origin and recurrent evolution of desiccation tolerance in the green lineage. Summary Water is essential for life on Earth, yet some plants can survive the near‐complete loss of cellular water, a trait known as desiccation tolerance. Although rare in vegetative tissues of vascular plants, desiccation tolerance is scattered across the plant ...
Jenny Schuster, Robert VanBuren
wiley +1 more source
Anthromes and terrestrial carbon
PLANTS, PEOPLE, PLANET, Volume 8, Issue 5, Page 1389-1393, September 2026.
Anthony P. Walker +5 more
wiley +1 more source
Anais da Academia Brasileira de Ciências, 2013 The pollen morphology and exine structure of 17 species of Lippia L. were investigated in this work using light and scanning electron microscopy. Among the species studied, 14 showed tricolporate pollen grains, two had tri- and tetracolporate pollen ...
Saulo M. Sousa +4 more
doaj +1 more source
Dehydration‐driven organization of metabolites into NaDES‐like assemblies in orthodox seeds
New Phytologist, Volume 251, Issue 3, Page 1172-1187, August 2026.Summary Desiccation tolerance in plants, especially during orthodox seed dehydration, relies on compatible solute accumulation, complex molecular mechanisms, and intermolecular organizations that remain poorly understood. We combined metabolite profiling, mass spectrometry imaging, and electrospray and cold‐spray ionization mass spectrometry to ...
Youcef Haddad +11 more
wiley +1 more source
Evidência, 2016 O fluxo gênico, ou escape gênico, é definido como a troca de alelos entre indivíduos, isto é, a transferência de alelos de uma variedade/espécie para outra.
Bruno da Costa Paniago +1 more
doaj +1 more source